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Bolts › Flange Bolts

Galvanized Zinc Hex Flange Head Cap Screw Bolt

Updated 2026-11-03 · Markdown version

Model no. DIN6921

US$0.301,000–4,999 pieces

US$0.145,000+ pieces

MOQ 1,000 pieces · Final price confirmed in your quote

Head Style: Hexagonal
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Grade: 8.8 / 10.9 / 12.9
Surface Treatment: Black Oxide/Plain/Zinc Plated/HDG
Diameter: M5-M20
Material: Alloy Steel
Wide Range of Sizes: With a production range from M3 to M30 and inch sizes from 10# to 1-1/4", you can find the perfect fasteners for your specific needs.
Various Surface Treatments: Choose the surface treatment that suits your requirements, whether it's black oxide, white zinc plated/yellow zinc plated, or HDG.

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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

Model NO.	DIN6921
Groove	Hexagon
Connection	Common Bolt
Head Style	Hexagonal
Standard	DIN, GB, ANSI, BSW, JIS, GOST
Grade	8.8 / 10.9 / 12.9
Surface Treatment	Black Oxide/Plain/Zinc Plated/HDG
Keyword	Hex Flange Head Cap Screw Flange Bolt
Diameter	M5-M20
Application	Machinery,Chemical Industry, Environmental,Buildin
Certificate	ISO9001: 2015
Export Markets	Global
Transport Package	1. Small Boxes Into Outer Carton 2. Bulk Packaging
Specification	Shoulder Diameter φ6-φ25, 1/4-1", 1/4-3/4"
Origin	China
HS Code	731815
Production Capacity	1000 Tons Per Month
Customization	Available
Material	Alloy Steel
Type	Flange Head
Our extensive range of fastener products includes	Drop-in Anchor
Production Range	Our fasteners are available in a range of diameters, from M3 to M30, and inch sizes from 10# to 1-1/4".
Reliable Performance	Our fasteners are manufactured to the highest standards, ensuring their reliability and performance in various applications.
Durable	Made from carbon steel and alloy steel, our fasteners are built to last, providing you with long-lasting solutions.
Wide Range of Sizes	With a production range from M3 to M30 and inch sizes from 10# to 1-1/4", you can find the perfect fasteners for your specific needs.
Various Surface Treatments	Choose the surface treatment that suits your requirements, whether it's black oxide, white zinc plated/yellow zinc plated, or HDG.
Quality Assurance	Our fasteners are ISO9001:2008, SGS, and ROHS certified, ensuring their quality and compliance with international standards.
Package	25-30KGS/CARTON, 36-48CARTONS/PALLET
Produce time	Standard size in stock 5-7 working days, Non-standard: 12-18 working days, base on the quantity
Shipping way	by Air, Express (Fedex, UPS, DHL, etc.). More than 100KGS: By sea. We have an agent that can help you ship the goods. If you have your own agent, that is also OK.
Some of our main products include	Drop-in Anchor
Category	Flange Bolts

Technical parameters

Material	1.Stainless Steel:SS304,SS316 2.Alloy Steel 3.Carbon steel
Grade	SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc.
Finish	Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc.
Thread	UNC,UNF
Standard	ISO, DIN, ANSI, JIS, BS and Non-standard
Sample Service	Samples are all in free when you confirm our price is acceptable.
Certificate	ISO9001,CE, SGS
Advantage	1. Competitive price; 2. OEM service available
Packing	Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Payment terms	FOB, CIF, CFR, L/C, or others.
Delivery method	by sea, by air or by express service
Lead Time	7-15 work days after order confirmed
Application	Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc.
Notes	Special specifications and marks can be made according to customers requirements;

Description

Galvanized Zinc Hex Flange Head Cap Screw Bolt is part of our flange bolts range (Bolts).

Key details

Type: Flange Head
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Material: Alloy Steel
Grade: 8.8 / 10.9 / 12.9
Diameter: M5-M20
Head Style: Hexagonal
Groove: Hexagon
Surface Treatment: Black Oxide/Plain/Zinc Plated/HDG

Available configurations include head style, standard, grade, surface treatment and diameter. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.14 – 0.30 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 Galvanized Zinc Hex Flange Head Cap Screw Bolt?

The listed minimum order is 1,000 pieces, at US$0.14 – 0.30 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$0.30 for 1,000–4,999 pieces; US$0.14 for 5,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Galvanized Zinc Hex Flange Head Cap Screw Bolt?

Type: Flange Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Alloy Steel; Grade: 8.8 / 10.9 / 12.9; Diameter: M5-M20; Head Style: Hexagonal. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include head style, standard, grade, surface treatment and diameter. 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 flange bolts are available?

The Flange Bolts category lists 2,404 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/flange-bolts/

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$0.14 – 0.30MOQ 1,000 piecesGet a quote WA