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Washers › Countersunk, Cup & Finishing Washers

Customizable High Strength Cone Type Carbon Steel Black Oxide Countersunk Washer Assembly Fastener

Updated 2026-11-04 · Markdown version

US$0.3610,000–999,999 pieces

US$0.0361,000,000+ pieces

MOQ 10,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Testing Standard: ISO 9001
Standard: DIN,ASTM/ANSI JIS En ISO,as,GB
Class/Grade: 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9
Surface Treatment: Zinc(Yellow,White,Blue,Black),Hop DIP Galvanized(H
Packing: Products are packed in carton boxes or plastic bags. We offer OEM service, so customized packing is warmly welcomed.

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Type	Finishing Countersunk Washer
Material	Carbon Steel
Combination Washer Structure	A Type
Combination Washer Packaging	All Inclusive
Spring Washer Type	Standard
Testing Standard	ISO 9001
Standard	DIN,ASTM/ANSI JIS En ISO,as,GB
Class/Grade	3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9
Surface Treatment	Zinc(Yellow,White,Blue,Black),Hop DIP Galvanized(H
Transport Package	Carton and Pallet
Specification	M3-M60; Customized
Origin	China
HS Code	731822
Production Capacity	500 Tons/Month
Packing	Products are packed in carton boxes or plastic bags. We offer OEM service, so customized packing is warmly welcomed.
Delivery	1. Express such as FedEX/ DHL/ UPS/ TNT for samples.
Category	Countersunk, Cup & Finishing Washers

Technical parameters

Products Name	Washer
Standards	DIN 125A; DIN9021; DIN440; DIN126; DIN433; ASTM USS &SAE; F436; JIS; ASME, GB
Surface Treatment	Plain/ Self Color (S/C); Polished; Zinc Plated (ZP); Zinc Yellow (Y2P)Zinc CR 3+; Oxide Black; HDG (Hot Dip Galvanized); Nickel PlatedPhosphated ; Mechanical Galvanized; Dacromet; Geomet; Zinc Nickel Alloy Plated;Tin Plated
Material	Carbon Steel
Size	M 3-M60; Customized
Hardness	Grade 4.8/ 6.8/ 8.8/10.9/12.9; Q235 (90-200HV); #45 (1045); #60; 38-45HRC ( above 300HV)
Heat Treatment	Tempering; Hardening; Spheroidizing; Stress Relieving.
Avaliable Packing	Bulk in cartons +wood Pallet or according to customer special demand
Application	Mechanical Manufacturing, Automobiles, Construction
Delivery Method	By sea/ By air/ By express

Description

Customizable High Strength Cone Type Carbon Steel Black Oxide Countersunk Washer Assembly Fastener is part of our countersunk, cup & finishing washers range (Washers).

Key details

Type: Finishing Countersunk Washer
Standard: DIN,ASTM/ANSI JIS En ISO,as,GB
Material: Carbon Steel
Surface Treatment: Zinc(Yellow,White,Blue,Black),Hop DIP Galvanized(H
Combination Washer Structure: A Type
Combination Washer Packaging: All Inclusive
Spring Washer Type: Standard
Testing Standard: ISO 9001

Available configurations include material, testing standard, standard, class/grade and surface treatment. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 10,000 pieces at US$0.036 – 0.36 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Customizable High Strength Cone Type Carbon Steel Black Oxide Countersunk Washer Assembly Fastener?

The listed minimum order is 10,000 pieces, at US$0.036 – 0.36 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$0.36 for 10,000–999,999 pieces; US$0.036 for 1,000,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Customizable High Strength Cone Type Carbon Steel Black Oxide Countersunk Washer Assembly Fastener?

Type: Finishing Countersunk Washer; Standard: DIN,ASTM/ANSI JIS En ISO,as,GB; Material: Carbon Steel; Surface Treatment: Zinc(Yellow,White,Blue,Black),Hop DIP Galvanized(H; Combination Washer Structure: A Type; Combination Washer Packaging: All Inclusive. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, testing standard, standard, class/grade and surface treatment. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other countersunk, cup & finishing washers are available?

The Countersunk, Cup & Finishing Washers category lists 492 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/washers/countersunk-cup-finishing-washers/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

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US$0.036 – 0.36MOQ 10,000 piecesGet a quote WA