Specification Brand : Nord-Lock BulletPoint : These two-piece washers create a wedge by locking into each other to prevent rotation in ExteriorFinish : steel ExternallyAssignedProductIdentifier : 7431957983154 ItemName : NORD-LOCK 67.1-4081 Lock Washer,Stl,Fit 2 1/2 In,0.28 T ItemPackageQuantity : 1 ItemTypeKeyword : wedge-lock-washers Manufacturer : Nord-Lock Material : Alloy Steel MetalType : Alloy Steel ModelNumber : 2887 NumberOfItems : 1 NumberOfPieces : 25 PartNumber : 2887 ProductDescription : These two-piece washers create a wedge by locking into each other to prevent rotation in high-vibration and dynamic load environments. Wedge washers have a higher clamp load than serrated lock washers and their locking function is not affected by lubrication. Teeth on one half of the washer engage with wedges on the other when tightened, utilizing tension instead of friction to secure bolted joints. ProductSiteLaunchDate : 2012-10-16T20:21:40.031Z Style : Wedge UnitCount : 1 UnspscCode : 31161500 WasherType : Flat