SC Steel Construction Series

Nord-Lock SC Washer Steel Construction - Steel EN 1.7182

"SC" Series Nord-Locks are designed for use on steel construction applications to fit HV/HR sets bolts and nuts in accordance with European Standard EN 14399-3,  EN 14399-4,  EN 14399-8

Nord-Lock wedge lock washers are a high-quality brand name washer that secure bolted joints with tension instead of friction. A single "washer" is comprised of a pair of lock washers that have cams on one side and radial teeth on the opposite side.

The rise of the cams between the Nord-Lock washers is greater than the pitch of the bolt. When the bolt and/or nut is tightened, the teeth grip and seat against the mating surfaces. The Nord-Lock wedge lock washer is locked in place, allowing movement only across the face of the cams. Any attempt from the bolt/nut to rotate loose is blocked by the wedge effect of the cams.

Material: Steel 1.7182 with Delta Protekt KL100 Zinc Flake Coating

Through hardened, minimum 1,000 hours in salt spray test (according to ISO 9227). Temperature Range: -50°C to 150°C

Through-holes

Require the use of two pairs of Nord-Lock SC-washers. One pair for securing the bolt and a second pair for securing the nut. Turn both fasteners in order to close the cams on both washer pairs before tightening to minimize settlements. Keep the bolt secure whilst tightening the nut.

Designs where Nord-Lock SC-washers are NOT recommended: 

-with plain washers

-when mating surfaces are not locked in place

-when mating surfaces are harder than washers

-with very soft mating surfaces - for example, wood and plastic

-for applications with extremely large settlements

-when there is no clamping force in the joint

Technical Guide