DISC W/SER. WASHER

A DISC W/SER. WASHER is an anti-loosening washer with a disc-shaped elastic structure and radial serrations formed on the contact surface. After tightening, the combination of disc spring force and serrated surface engagement helps maintain contact pressure and reduce loosening caused by general vibration.

Product Name: DISC W/SER. WASHER / Serrated Disc Washer
Product Type: Disc-shaped elastic anti-loosening washer
Product Structure: Disc-shaped body with radial serrations
Primary Functions: Provides elastic preload, surface engagement, and auxiliary anti-loosening performance
Serration Configuration: Single-sided serrations, double-sided serrations, or as specified by drawing
Inner Diameter: Selected according to the size of the matching screw or bolt
Outside Diameter and Disc Height: Determined according to load, compression travel, and available installation space
Materials: Spring steel, carbon steel, stainless steel, or other specified materials
Heat Treatment: Can be evaluated according to hardness, elasticity, and fatigue-resistance requirements
Surface Treatments: Zinc plating, nickel plating, black oxide, passivation, or other specified finishes
Production Methods: Stamping, serration forming, and heat treatment
Production Options: Standard specifications or custom production based on drawings
Packaging: Bulk packing, bag packing, or box packing

Combines Spring Force with Serrated Surface Engagement

When compressed, the disc-shaped structure generates axial spring-back force, while the serrations increase friction against the screw head, nut, and workpiece surface.

Provides Auxiliary Anti-Loosening Performance

The serrated surface can bite into the mating surface. Combined with elastic preload, this helps reduce the possibility of reverse screw rotation under general vibration conditions.

Compensates for Minor Clearance Changes

The elastic disc structure can compensate for certain preload changes caused by component settlement, dimensional tolerances, and thermal expansion or contraction.

Concentrated Contact Points Improve Engagement

The serrated structure creates multiple localized contact points, improving surface engagement and making the washer suitable for machinery, automotive and motorcycle components, and electrical equipment.

Compact Installation Space

The thin-profile structure can be installed directly onto a screw or bolt. Because the serrated surface may leave indentations, suitability should be confirmed before use on visible surfaces or softer materials.