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316 Stainless Steel Wedge Lock Washer

Manufacturer part: 91812A479

When it's critical to keep bolted assemblies secure, choose these two-piece lock washers with the tightest grip of all. They stop nuts and screws from loosening in heavy machinery that experiences jarring starts and stops, such as compressors and compactors. Serrations on the outside bite into the fastener and mating surfaces, while wedges on the inside lock the two pieces together. When the nut or screw starts to loosen, the wedges drive more tightly together to maintain tension. You can reuse these washers up to fifteen times, as long as the serrations and wedges are not worn down. They are comparable to NORD-LOCK® or Sherex TEC® washers. Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals. Top-and-Bottom Serration—Adds friction for extra gripping power.

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Technical data

Specifications

Normalized product attributes for faster comparison and sourcing.

ID
0.510"
OD
1.000"
ECCN
EAR99
Hardness
Rockwell C51
Material
316 Stainless Steel
Thickness
0.110" to 0.130"
Performance
Extreme Vibration Resistant, Reusable, Super Corrosion Resistant
Washer Type
Wedge
For Screw Size
M12
Heat Treatment
Case Hardened
RoHS Compliance
RoHS 3 (2015/863/EU) Compliant
DFARS Compliance
Specialty Metals Compliant (252.225-7009)
REACH Compliance
REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant
USMCA Qualifying
No
Country of Origin
Sweden
Schedule B Number
731821.0000
Serration Location
Top and Bottom
System of Measurement
Metric

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SupplierSupplier SKUPriceStockLead timeType
Approved Vendor91812A479$6.21 USDContact supplierContact supplierAuthorized · US distributor

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