Polaris® Kinematic Glue-In Mirror Mounts

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A 145° clear edge allows a pair of mirrors to be mounted in close proximity at low angles of incidence without clipping the beam path (see the Usage Tips tab).

• 145° Clear Edge for Low Angles of Incidence
• Glue-In Optic Cell for Ø1/2" Optics Minimizes Wavefront Distortion
• 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
• Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustment
• ±4° Mechanical Angular Range with ~11 mrad/rev Resolution
• Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
• Adjusters can be Locked Using POLARIS-LN05 Lock Nuts (Sold Separately)

The POLARIS-K05C4 Clear-Edge Kinematic Glue-In Mirror Mount features a 145° clear edge and an optic cell that allows optics to be glued in place. The clear-edge design allows for low incidence angles, making these mounts ideal for space-constrained systems. The adhesive optic mounting method ensures minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.

The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 130 TPI adjusters feature two Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).

The mount features two #8 (M4) counterbores for post mounting. If mounting a transmissive optic, be sure to use a low-profile cap screw (one 8-32 and one M4 are included) to avoid blocking the clear aperture. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below and download the .pdf or .dxf drawing for details).

For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel. In addition, we can replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.

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Two cutouts in the glue plane increase the clear aperture when transmissive optics are used.

• Glue-In Optic Cell for Ø1/2" Optics Minimizes Wavefront Distortion
• 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
• Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
• ±4° Mechanical Angular Range with ~11 mrad/rev Resolution
• Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
• Adjusters can be Locked Using POLARIS-LN05 Lock Nuts (Sold Separately)

The POLARIS-K05G4 Ø1/2" Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 130 TPI adjusters. The mount features a compact footprint, ideal for OEM applications, and a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue channel to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters; these cutouts are shown in the photo to the right. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.

The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 130 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).

The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details). Due to the shallow design of the counterbores, low-profile 8-32 and M4 cap screws are included for mounting without obstructing the transmissive beam path. The 8-32 cap screw accepts a 5/64" (2 mm) hex wrench, while the M4 cap screw accepts a 2.5 mm hex wrench.

For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount below. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact tech support for more information.

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A POLARIS-K19G4 mounted using a Ø1" Post for Polaris Mirror Mounts and a Polaris Clamping Arm.

• Glue-In Optic Cell for Ø19 mm Optics Minimizes Wavefront Distortion
• 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
• Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
• ±4° Mechanical Angular Range with ~7.0 mrad/rev Resolution
• Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
• Adjusters can be Locked Using POLARIS-LN05 Lock Nuts (Sold Separately)

The POLARIS-K19G4 Ø19 mm Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 130 TPI adjusters. The mount features a compact footprint, ideal for OEM applications, and a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue channel to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.

The 130 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).

The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts, shown to the above right. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details).

For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount below. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact tech support for more information.

Ø19 mm Mirrors

Item #	Wavelength	Coating Type	Reflectance	Reflectance Curvesa  (Click for Plot)
Broadband Dielectric Mirrors
BB07-E01	350 - 400 nm	Broadband Dielectric	Ravg > 99% for 350 - 400 nm
BB07-E02	400 - 750 nm	Broadband Dielectric	Ravg > 99% for 400 - 750 nm
BB07-E02Pb	400 - 750 nm	Broadband Dielectric (Backside Polished)	Ravg > 99% for 400 - 750 nm
BB07-E03	750 - 1100 nm	Broadband Dielectric	Ravg > 99% for 750 - 1100 nm
BB07-E03Pc	750 - 1100 nm	Broadband Dielectric (Backside Polished)	Ravg > 99% for 750 - 1100 nm
BB07-E04	1280 - 1600 nm	Broadband Dielectric	Ravg > 99% for 1280 - 1600 nm
Laser Line Mirrors
NB07-H01	193 nm	ArF Excimer Laser Line	R > 98% at 193 nm
NB07-K04	262 - 266 nm	Nd:YAG Laser Line (4th Harmonic)	Ravg > 99.0% for 262 - 266 nm
NB07-K05	300 - 308 nm	Ar-Ion Laser Line	0° to 45° AOI: Ravg > 99.5% (S-Pol), Ravg > 98.0% (P-Pol) for 300 - 308 nm	8° AOI 45° AOI
NB07-K07	333 - 364 nm	Ar-Ion Laser Line	0° AOI: R > 99.5% (Unpolarized) at 352 nm 45° AOI: R > 99.0% (S-Pol), R > 98.7% (P-Pol) at 352 nm	8° AOI 45° AOI
NB07-K08	349 - 355 nm	Nd:YAG Laser Line (3rd Harmonic)	Ravg > 99.5% for 349 - 355 nm
NB07-K10	458 - 528 nm	Ar-Ion Laser Line	0° to 45° AOI: Ravg > 99.0% (S-Pol), Ravg > 99.0% (P-Pol) for 458 - 528 nm	6° and 45° AOI
NB07-J11	520 - 647 nm	Kr-Ion Laser Line	Ravg > 99.7% for 520 - 647 nm
NB07-K12	524 - 532 nm	Nd:YAG Laser Line (2nd Harmonic)	Ravg > 99.0% for 524 - 532 nm
NB07-K13	532 nm and 1064 nm	Nd:YAG Laser Line (Fundamental and 2nd Harmonic)	R > 98% at 532 nm R > 99% at 1064 nm	532 nm    1064 nm
NB07-K14	1047 - 1064 nm	Nd:YAG Laser Line (Fundamental)	Ravg > 99.5% for 1047 - 1064 nm
Metallic Mirrors
PF07-03-F01	250 - 450 nm	UV Enhanced Aluminum	Ravg > 90% for 250 - 450 nm	12° AOI      45° AOI
PF07-03-G01	450 nm - 20 µm	Protected Aluminum	Ravg > 90% for 450 nm - 2 µm Ravg > 95% for 2 - 20 µm	12° AOI      45° AOI
PF07-03-P01	450 nm - 20 µm	Protected Silver	Ravg > 97.5% for 450 nm - 2 µm Ravg > 96% for 2 - 20 µm	12° AOI      45° AOI
PF07-03-P01Pd	450 nm - 20 µm	Protected Silver (Backside Polished)	Ravg > 96% for 400 - 700 nm Ravg > 97.5% for 700 nm - 2 µm	12° AOI      45° AOI
PF07-03-M01	800 nm - 20 µm	Protected Gold	Ravg > 96% for 800 nm - 20 µm	12° AOI      45° AOI
Mirror Blanks
PF07-03	N/A	Mirror Blank	N/A	N/A
The shaded regions in the graphs denote the ranges over which we guarantee the specified reflectance, except where otherwise noted. Transmission Plot at 0° AOI and 45° AOI Transmission Plot at 0° AOI and 45° AOI Transmission Plot at 0° AOI and 45° AOI

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For a two-mirror system designed to provide a single reflection off of each mirror surface, two POLARIS-K1C4 mounts (top) can be positioned in closer proximity than two POLARIS-K1S4 mounts (bottom) while still allowing the beam to enter and exit without clipping.

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142° Clear Edge Allows for Low Angles of Incidence

• 142° Clear Edge for Low Angles of Incidence
• Glue-In Optic Cell for Ø1" Optics Minimizes Wavefront Distortion
• 2-Adjuster Hex-Driven Design with 100 TPI Matched Actuator/Body Pairs
• Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
• ±4° Mechanical Angular Range with ~7.7 mrad/rev Resolution
• Less than 1 µrad Deviation after 12.5 °C Temperature Cycling
  (See Test Data Tab)
• POLARIS-N5 Removable Knob Sold Separately
• Adjusters can be Locked Using POLARIS-LN1 Lock Nuts (Sold Separately)

The 2-adjuster POLARIS-K1C4 Clear-Edge Kinematic Glue-In Mirror Mount features a 142° clear edge and an optic cell that allows optics to be glued in place. The clear-edge design allows for low incidence angles, making these mounts ideal for space-constrained systems. The adhesive optic mounting method ensures minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.

The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 100 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs (sold below) can be threaded onto the adjusters for improved feel in fine-resolution adjustments; note that the removable knobs will block the adjuster side holes but not the hex. The adjusters on this mount can be locked using the POLARIS-LN1 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 32 oz-in, which can be achieved by using our TW13 preset torque wrench (sold below).

The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below and download the .pdf or .dxf drawing for details).

For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel. In addition, we can replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact tech support for more information.

Click to Enlarge
Methods of Adjusting a Glue-In Mirror Mount:
(A) 5/64" or 2.0 mm Hex Key in End of the Adjuster,
(B) SA1 Tool Through Side Holes,
(C) POLARIS-N5 Removable 1/4"-100 Adjuster Knobs, and (D) HKTS-5/64 Knobs and 1/16" or 1.5 mm Balldriver Through Side Holes for Fine Adjustment

• Glue-In Optic Cell for Ø1" Optics Minimizes Wavefront Distortion
• 2-Adjuster Hex-Driven Design with 100 TPI Matched Actuator/Body Pairs
• Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
• ±4° Mechanical Angular Range with ~7.7 mrad/rev Resolution
• Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
• Adjusters can be Locked Using POLARIS-LN05 Lock Nuts (Sold Separately)

The POLARIS-K1G4 Ø1" Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 100 TPI adjusters. The mount features a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue plane to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.

The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 100 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs (sold below) can be threaded onto the adjusters for improved feel in fine-resolution adjustments; note that the removable knobs will block the adjuster side holes but not the hex. The adjusters on this mount can be locked using the POLARIS-LN1 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 32 oz-in, which can be achieved by using our TW13 preset torque wrench (sold below).

The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts, shown to the above right. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details).

For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount above. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact tech support for more information.

• Low Shrinkage (1.5%) and Low Stress
• Strong Glass-Metal Bond is Ideal for Use with Optics
• Recommended UV Curing Intensity >2 mW/cm² @ 365 nm

The NOA61 Optical Adhesive is a clear, one-part adhesive that contains no solvents. When exposed to UV light, it gels in seconds and cures fully in minutes to give a tough resilient bond. It has been optimized to adhere optical glass to metal with very little stress, making it ideal for use with our Polaris Glue-In Mounts. To cure these optical adhesives, they must be exposed to UV light. Thorlabs offers a UV curing system that provides an intensity up to 600 mW/cm².

NOA61 optical adhesive is designed to give the best possible bond to glass surfaces and may be polished after curing. It meets Federal Specification MIL-A-3920 for optical adhesives and is approved for use on all government contracts specifying such adhesives. This adhesive has excellent adhesion to metal, fiberglass and glass-filled plastic.

Shelf Life
These UV-curing adhesives have a shelf life of approximately 8 months. This time frame begins on the date the epoxy was packaged at the manufacturer. Upon receipt by the end user, Thorlabs guarantees that the remaining shelf life will be at least 3 months.

• Index of Refraction
• Net Weight is the intrinsic weight of the product itself, not including the weight of the packaging or other materials.

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POLARIS-K1C4 Mount with Optic and Optional POLARIS-N5 Removable Knobs

• For Convenient Adjustment of 1/4"-100 Adjusters
• Attaches Directly to Adjuster Threading
• Sold Individually

The Polaris^® Removable Knobs for 1/4"-100 Adjusters allows the user to adjust a Polaris kinematic mirror mount by hand. The knobs can be used with select Polaris mounts, listed in the table to the right. Note that when the knobs are used with any of these mounts, they will block the side through holes on the adjuster. The adjuster screw's 5/64" (2 mm) hex socket is still usable when the knobs are attached.

Click for Details
POLARIS-K1-2AH with HKTS-5/64 Adjuster

• For Convenient Adjustment of 5/64" and 2 mm Hex-Driven Actuators
• Red Anodized Adjustment Knob with Engraved Hex Size
• Replaceable Hex Tip
• Sold in Packages of 4

These 5/64" Hex Key Adjuster Thumbscrews allow for quick adjustment of many 5/64" and 2 mm hex-driven actuators (or standard actuators with the knobs removed). These temporary knobs can be left in the screw's hex socket between adjustments for convenience (see photo to the right). An 8-32 setscrew (5/64" hex) secures the replaceable hex bit, which can be reversed if the tip is stripped. Contact Tech Support to order replacement hex key bits.

We offer hex key thumbscrews in sizes from 0.050" to 3/16" and 2 mm to 5 mm.

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The SA1 Adjusting a POLARIS-K1S4 Using the Side Holes and Rear Hex

• Ø0.07" Precision-Fit Tip for Side Holes on Polaris Adjusters
• 5/64" (2.0 mm) Hex on Handle
• Magnetic, Chemically Cleaned Stainless Steel

The Side Hole Adjustment Tool features a Ø0.07" precision-fit tip designed for Polaris mounts with side hole adjusters. The handle features a 5/64" (2.0 mm) hex allowing the SA1 to act as a small knob, and the central nut is compatible with a 6.0 mm wrench allowing for a longer lever arm. The precision-fit tip minimizes backlash during adjustments and the depth stop allows the tool to rest securely in a side hole between adjustments. On Ø25 mm mirror mounts and larger, the 1.62" length allows the tool to adjust the actuator 360° without interfering with the other adjuster on the back of the mount.

The SA1 is made of chemically cleaned, hardened, super alloy stainless steel for durability and compatibility with clean environments. The tool is also magnetic allowing it to be easily retrieved from tight or sensitive setups using a magnet. 

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POLARIS-LN05 Lock Nuts on a POLARIS-K19S4 Mount

• Provide Long Term Adjuster Stability
• Compatible with Select Polaris Mounts

These lock nuts are designed for use with any Polaris kinematic mount that does not contain low-profile adjusters. Designed for long-term adjuster stability or applications that are exposed to shock and vibration, these lock nuts are pre-greased with the same ultra-high-vacuum-compatible, low-outgassing PTFE grease as the Polaris mounts and have been tested for adjuster fit.

For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened by hand to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). If long term stability is required, the torque wrenches below can be used to apply the appropriate amount of torque to each lock nut (see the table below for torque values). POLARIS-LN05 lock nuts require a 6 mm hex tool for tightening, while POLARIS-LN1 lock nuts require a 13 mm hex tool. To avoid cross threading the lock nut, place it against the adjuster and "unscrew" the lock nut until you feel a slight drop; then thread the lock nut onto the adjuster.

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TW6 Torque Wrench Used to Secure POLARIS-LN05 Lock Nut on POLARIS-K05T2 Mirror Mount

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Each wrench is engraved with its preset torque value and item #.

• Preset Wrenches for Polaris Lock Nuts:
  • TW6: 24 oz-in (0.17 N•m) for POLARIS-LN05 Lock Nut
  • TW13: 32 oz-in (0.23 N•m) for POLARIS-LN1 Lock Nut
• Break-Over Design Ensures Proper Torque is Applied
• Ideal for Applications Requiring Long-Term Locking
• Hex Size: 6 mm or 13 mm

These torque wrenches have a preset torque value to secure the lock nuts on Polaris^® mounts for long-term locking; see the table below for specifications. When the preset torque value has been achieved, the break-over design will cause the pivoting joint to "break," as shown to the right. The wrench's hex head will move back into place once the force is removed. This design prevents further force from being applied to the lock nut. Engraved guidelines indicate the angle the wrench should pivot in order to apply the specified torque; pivoting the handle past these guidelines will over-torque the lock nut. Each wrench is also engraved with its preset torque value, torque direction, wrench size, and item # for easy identification in the field.

These wrenches are designed to be compatible with cleanroom and vacuum chamber applications. They are chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface. After passivation, they are assembled in a clean environment and double vacuum bagged to eliminate contamination when transported into a cleanroom. Every wrench has a bead blasted finish to minimize reflections when working with setups that include lasers.

Please note that these wrenches are not intended for use in applications where adjusters are frequently tuned, as these applications typically require torque values of 4 to 8 oz-in (0.03 to 0.06 N·m).