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Screws › Countersunk & Flat-Head Machine Screws

Industrial Metric Hardware Assembly Screws

Updated 2026-11-04 · Markdown version

Model no. DIN7991

US$0.12 / piece

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

Head Style: Counter Sunk Bolt
Standard: DIN
Grade: 8.8, 10.9, 12.9
Finish: Plain
Packing: Cartons+Plastic Bags
Head Type: Hexagon Flange Head
Surface Treatment: Black Oxide
Material: Steel

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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.	DIN7991
Connection	Common Bolt
Head Style	Counter Sunk Bolt
Standard	DIN
Grade	8.8, 10.9, 12.9
Application	Machinery, Chemical Industry, Environmental, Building, Industry
Finish	Plain
Packing	Cartons+Plastic Bags
Head Type	Hexagon Flange Head
Surface Treatment	Black Oxide
Transport Package	Carton+Pallet
Specification	M6-M100
Origin	Zhejiang, China
Production Capacity	100000 Piece/Pieces Per Month
Customization	Available
Material	Steel
Type	Countersunk Head
OEM/ODM Services	Yes, we accept OEM/ODM orders.
Quality Guarantee	We follow strict quality control measures and offer a lifetime warranty on all products.
Trustworthiness	We are a reputable fasteners factory in China with years of experience and credit guarantees from reputable groups.
Pricing	Contact us for competitive pricing on high-quality products.
Quality Control	Our QC team inspects every production link and provides Material Test Certificates.
Free Samples	New customers can request free samples, with express charges covered by the client.
Acceptance of Small Orders	Yes, we accept orders of any size and maintain stock for various fasteners.
Delivery Time	Items in stock can be delivered within 15 days, while larger quantities may take 25-35 days.
Packaging	Standard packing is 20-25kg per carton, with customized packaging available upon request.
Payment Terms	We accept T/T, L/C, D/P for general orders, and PayPal, Western Union for small or sample orders.
Category	Countersunk & Flat-Head Machine Screws

Technical parameters

item	value
Finish	Plain
Material	Steel
Place of Origin	China
	Zhejiang
Model Number	DIN7991
Standard	DIN
Material	Steel
Surface treatment	Black Oxide
Application	Industry
Packing	Cartons+plastic Bags
Head type	Hexagon Flange Head

Description

Industrial Metric Hardware Assembly Screws is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Countersunk Head
Standard: DIN
Material: Steel
Grade: 8.8, 10.9, 12.9
Head Type: Hexagon Flange Head
Head Style: Counter Sunk Bolt
Surface Treatment: Black Oxide
Finish: Plain

Available configurations include head style, standard, grade, finish and packing. 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$0.12 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 Industrial Metric Hardware Assembly Screws?

The listed minimum order is 1,000 pieces, at US$0.12 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Industrial Metric Hardware Assembly Screws?

Type: Countersunk Head; Standard: DIN; Material: Steel; Grade: 8.8, 10.9, 12.9; Head Type: Hexagon Flange Head; Head Style: Counter Sunk Bolt. 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, finish and packing. 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 & flat-head machine screws are available?

The Countersunk & Flat-Head Machine Screws category lists 2,424 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/

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$0.12MOQ 1,000 piecesGet a quote WA