Basic Info.

Model NO. M6-M20
Combination Washer Structure A Type
Combination Washer Packaging All Inclusive
Spring Washer Type Standard
Available Material High Strength Steel, Stainless Steel, Carbon Steel
Head Type Round
International Standard DIN, ANSI, GB, JIS, Bsw, GOST
Class/Grade 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9
Used Black Hex Bolt - Machinery, Building
Surface Finishing Hot DIP Galvanizing, Blu-White Zinc Plated
Transport Package 20-25kg/Carton + 900kg Pallet
Specification M6-M20
Trademark HN
Origin China
HS Code 731815
Production Capacity 500ton/Month

Product Description

A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Other uses are as a spacer, spring (belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers usually have an outer diameter (OD) about twice the width of their inner diameter (ID).

Washers are usually metal or plastic. High quality bolted joints require hardened steel washers to prevent the loss of pre-load due to Brinelling after the torque is applied.