Features & Benefits
  • Heavy-duty, self-locking design
  • For use with bolts up to Class 10.9, Grade 8
  • Available in sizes from 1/4" (M6) to 1-1/2" (38 MM) Other sizes available by special order.
  • Available in 1010 Carbon Steel
  • Carbon Steel washers are case hardened and coated with RoHS-compliant Delta Protekt™
  • Provided in pre-assembled, glued pairs
  • Easy to install with standard tools
  • No re-tightening needed once installed
  • Vibration proof according to MIL-STD-1312-7
Proven Results
Disc-Lock™ Locking Washer Junker Test

Disc-Lock™ Wedge Locking Washers have been tested on a Junker Vibration Machine. The Junker test, considered the most severe vibration test for bolted joints according to DIN 65151, is used to determine the point at which a bolted joint loses its preload when subjected to shear loading due to transverse vibration.

When tested against a standard washer using the Junker test, Disc-Lock™ Wedge Locking Washers remained secure under severe vibration conditions, while the standard washer loosened significantly.

Proven Applications
Disc-Lock™ Wedge Locking Washers outperform conventional, split-ring, and other style washers in a wide variety of high stress, corrosive, and vibration-sensitive applications including:
  • Agriculture Equipment
  • Automotive
  • Construction Equipment
  • Heavy Rail
  • Logging Equipment
  • Marine
  • Military
  • Mining
  • Oil Drilling Equipment
  • Solar
  • Wind
  • Waste Management
Installation
  • To install the Disc-Lock™ Washer, place the preassembled pair of washers between the nut and the joint material.
  • As the nut is tightened, one half of the Disc-Lock™ Washer is seated to the joint material and the other to the nut.

  • Disc-Lock™ Washers should only be used against flat, relatively smooth metal surfaces.
  • If the joint material is not metal, the Disc-Lock™ washer may be used by securing the metal plate to the joint material in such a manner that the metal plate will not rotate.

  • A torque wrench is not required to install Disc-Lock™ Washers.
  • An air-gun can be used when installing and removing Disc-Lock™ Washers.
  • If installed correctly, the Disc-Lock™ Washer will ensure that the fastener remains secure, and will not require any re-tightening.
Torque Guidelines
When installing Disc-Lock™ Washers in a common application, expect an increase in required torque over recommended installation torque to achieve proper clamp load and maximum joint safety. Due to varying installation conditions and customer specific applications, additional information and torque recommendations are available by contacting Engineering support at Disc-Lock™.

Note
Weight and thickness of pairs will vary slightly with gauge of metal.
  • Coated in Delta Protekt ® KL100 and VH302 GZ.

    • Disc-Lock Wedge Locking Washers are also available through our Made in the U.S.A. product line
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Item #

Item Name

Size

Inner Diameter (A)

Outer Diameter (C)

Thickness (EE)

N/A Disc-Lock™ 0.150 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A #6 3 mm N/A 0.150 in3.81 mm N/A 0.340 in8.64 mm N/A 0.080 in2.03 mm
N/A Disc-Lock™ 0.175 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A #8 4 mm N/A 0.175 in4.45 mm N/A 0.340 in8.64 mm N/A 0.080 in2.03 mm
N/A Disc-Lock™ 0.203 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 3/16 in5 mm N/A 0.203 in5.15 mm N/A 0.401 in10.18 mm N/A 0.080 in2.03 mm
N/A Disc-Lock™ 0.262 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1/4 in6 mm N/A 0.262 in6.66 mm N/A 0.495 in12.57 mm N/A 0.127 in3.22 mm
N/A Disc-Lock™ 0.326 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 5/16 in8 mm N/A 0.326 in8.28 mm N/A 0.628 in15.95 mm N/A 0.142 in3.60 mm
N/A Disc-Lock™ 0.409 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 3/8 in10 mm N/A 0.409 in10.38 mm N/A 0.705 in17.90 mm N/A 0.160 in4.06 mm
N/A Disc-Lock™ 0.450 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 7/16 in11 mm N/A 0.450 in11.43 mm N/A 0.880 in22.35 mm N/A 0.153 in3.89 mm
N/A Disc-Lock™ 0.510 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1/2 in12 mm N/A 0.510 in12.95 mm N/A 0.937 in23.82 mm N/A 0.166 in4.22 mm
N/A Disc-Lock™ 0.572 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 9/16 in14 mm N/A 0.572 in14.53 mm N/A 1.128 in28.65 mm N/A 0.175 in4.45 mm
N/A Disc-Lock™ 0.651 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 5/8 in16 mm N/A 0.651 in16.53 mm N/A 1.247 in31.67 mm N/A 0.188 in4.79 mm
N/A Disc-Lock™ 0.820 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 3/4 in20 mm N/A 0.820 in20.82 mm N/A 1.381 in35.08 mm N/A 0.242 in6.15 mm
N/A Disc-Lock™ 0.883 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 7/8 in22 mm N/A 0.883 in22.44 mm N/A 1.470 in37.34 mm N/A 0.268 in6.80 mm
N/A Disc-Lock™ 1.015 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1 in24 mm N/A 1.015 in25.78 mm N/A 1.626 in41.30 mm N/A 0.256 in6.50 mm
N/A Disc-Lock™ 1.140 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1-1/8 in27 mm N/A 1.140 in28.96 mm N/A 1.715 in43.56 mm N/A 0.240 in6.10 mm
N/A Disc-Lock™ 1.275 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1-1/4 in30 mm N/A 1.275 in32.39 mm N/A 1.875 in47.63 mm N/A 0.265 in6.73 mm
N/A Disc-Lock™ 1.430 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1-3/8 in36 mm N/A 1.430 in36.32 mm N/A 2.196 in55.78 mm N/A 0.230 in5.84 mm
N/A Disc-Lock™ 1.523 Inch (in) Inner Diameter (A) Carbon Steel Washer N/A 1-1/2 in38 mm N/A 1.523 in38.68 mm N/A 2.196 in55.78 mm N/A 0.230 in5.84 mm
1 - 17 of 17 | Results Per Page | View | Unit of Measure
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