Flat Gasket
Square Washer Structure: Square Washer
Standard Spring Washer Type
Transport Package: 25kgs per Carton, Palletized for Europe
Origin: Ningbo
Material: Carbon Steel
Combination Washer Packaging: Square Washer
Trademark: NGL
Specification: M10 to M52
HS Code: 7318150000
Hot Dip Galvanized Square Flat / Plain Washers
A washer is a thin, disk-shaped component with a central hole, commonly used to distribute the load of threaded fasteners like screws or nuts. It can also serve as a spacer, spring (such as a Belleville or wave washer), wear pad, preload indicator, locking device, or vibration reducer. Typically, washers have an outer diameter roughly twice their inner diameter.
Washers are usually made from metal or plastic. For high-quality bolted joints, hardened steel washers are essential to prevent pre-load loss due to Brinelling after tightening.
In some cases, rubber or fiber gaskets used in taps or valves may be referred to as "washers," but they are generally designed for different purposes and manufactured differently. Washers also help prevent galvanic corrosion, especially when used between steel and aluminum surfaces.
The origin of the word "washer" is unclear, but it was first recorded in 1346 and defined in 1611.
**Product Name:** Washers (Flat, Spring, Ring, Lock, Slip)
**Standards:** DIN, ASTM/ANSI, JIS, EN, ISO, AS, GB
**Materials:** Stainless Steel (SS201, SS303, SS304, SS316, SS904L), Carbon Steel, High Strength Steel
**Finishing Options:** Zinc (Yellow, White, Blue, Black), Hot-Dip Galvanized (HDG), Black Oxide, Geomet, Dacromet, Anodization, Nickel Plated, Zinc-Nickel Plated
**Production Process:** Stamping, Machining, CNC for Custom Fasteners
**Custom Lead Time:** 15–30 days during peak season, 10–15 days during off-season
**Stock Products:**
- Carbon Steel: DIN125, DIN127, DIN471, DIN472, F436M
- Stainless Steel: All DIN or GB standard washers
**Free Samples:** Available for standard fasteners
Whether you're looking for standard washers or custom solutions, our range ensures reliable performance across various applications. From industrial machinery to automotive and construction, we provide high-quality washers that meet international standards. Our commitment to quality, durability, and customer satisfaction makes us a trusted supplier in the fastener industry.
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