SS Nord-Lock Washer
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SS Nord-Lock Washer

Nord-Lock wedge-locking washers utilize tension instead of friction in order to secure bolted joints exposed to severe vibration and dynamic loads. The system cannot loosen unintentionally as it creates a wedge-effect underneath the bolt head or nut. The system comprises of a pair of wedge-lock washers with cams on one side and radial teeth on the opposite side. As the fastener attempts to loosen, the unique design of the Nord-Lock's interior wedge design causes increased tension on the fastener, stopping the unwanted rotation. Over the operational life cycle, Nord-Lock washers offer increased operational reliability and lower maintenance costs, while significantly reducing the risks of production stops, accidents and warranty claims. Stainless steel Nord-Locks exhibit superior corrosion resistance in a multitude of applications including contact with chemicals and salt water.

Dimensional SpecificationsNord-Lock Washer

STS Part
Number
Bolt Size d D T Bolt Size d D T
ID OD Thickness ID OD Thickness
Imperial inch inch inch Metric mm mm mm
WNRD M6S6 - 0.26 0.43 0.09 M6 6.50 10.80 2.20
WNRD025S6 1/4 0.28 0.45 0.09 - 7.20 11.50 2.20
WNRD031S6 5/16 0.34 0.53 0.08 M8 8.70 13.50 2.00
WNRD037S6 3/8 0.41 0.65 0.08 - 10.30 16.60 2.00
WNRDM10S6 - 0.42 0.65 0.08 M10 10.70 16.60 2.00
WNRDM12S6 - 0.51 0.77 0.08 M12 13.00 19.50 2.00
WNRD050S6 1/2 0.53 0.77 0.09 - 13.50 19.50 2.00
WNRD050S6-OS 1/2 0.53 1.00 0.13 - 13.50 25.40 3.20
WNRD062S6 5/8 0.67 1.00 0.12 M16 17.00 25.40 3.00
WNRD062S6-OS 5/8 0.67 1.21 0.13 M16 17.00 30.70 3.20
WNRD075S6 3/4 0.79 1.21 0.13 - 20.00 30.70 3.20
WNRD087S6 7/8 0.92 1.36 0.13 M22 23.40 34.50 3.20
WNRD100S6 1 1.10 1.54 0.13 - 27.90 39.00 3.20
WNRDM137S6 1 3/8 1.47 2.17 0.27 M36 37.40 55.00 6.80
WNRD150S6 1 1/2 1.59 2.30 0.27 M39 40.40 58.50 6.80
SS Nord-Lock Washer
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Diameter Inside Diameter Outside Diameter Thickness Item # Availability Price Quantity UOM
M6 0.26 0.43 0.09 WNRD M6S6 Out Of Stock $7.9996/EA EA
1/4 0.28 0.45 0.09 WNRD025S6 Out Of Stock $9.01081/EA EA
5/16, M8 0.34 0.53 0.08 WNRD031S6 Out Of Stock $1.55342/EA EA
3/8 0.41 0.65 0.08 WNRD037S6 Out Of Stock $5.46175/EA EA
M10 0.42 0.65 0.08 WNRDM10S6 Out Of Stock $5.39367/EA EA
M12 0.51 0.77 0.08 WNRDM12S6 Out Of Stock $8.82599/EA EA
1/2 0.53 0.77 0.09 WNRD050S6 In Stock $8.65775/EA EA
1/2 0.53 1.0 0.13 WNRD050S6-OS In Stock $14.85783/EA EA
5/8, M16 0.67 1.0 0.12 WNRD062S6 In Stock $12.35979/EA EA
5/8, M16 0.67 1.21 0.13 WNRD062S6-OS In Stock $18.4171/EA EA
3/4 0.79 1.21 0.13 WNRD075S6 In Stock $18.59031/EA EA
7/8, M22 0.92 1.36 0.13 WNRD087S6 Out Of Stock $27.42811/EA EA
1 1.1 1.54 0.13 WNRD100S6 Out Of Stock $28.90228/EA EA
1 3/8, M36 1.47 2.17 0.27 WNRD137S6 Out Of Stock $95.04045/EA EA
1 1/2, M39 1.59 2.3 0.27 WNRD150S6 In Stock $99.23909/EA EA