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Nord-Lock Washer - 254 SMO Stainless Hardened EN 1.4547
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: Surface Hardened 254 SMO Stainless / EN 1.4547
254 is an austenitic stainless steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum, and nitrogren, washers made from 254 SMO are excellent for high chloride environments, salt water solutions and atmospheres and environments where stainless steel washers made of EN1.4404 stainless steel are not adequate.
Hardness: ≥ 600HV0.05
Corrosion resistance: PREN 45
Temperature Range: -160°C to 500°C
Use with A4 & A4-80 fasteners, commonly in industries where corrosive environments such as pumps, heat exchangers, food, medical, industrial processing.
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