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Screws › Countersunk & Flat-Head Machine Screws

SS316 DIN7991 Hexagon Socket Countersunk Head Cap Screw

Updated 2026-11-04 · Markdown version

Model no. M12X40

US$0.34100–499 pieces

US$0.31500–999 pieces

US$0.301,000–4,999 pieces

US$0.295,000+ pieces

MOQ 100 pieces · Final price confirmed in your quote

Material: Stainless Steel
Head Style: Hexagonal
Standard: DIN, ANSI, ISO
Grade: A4-70
Finish: Passivation
Price for The Size: M12X40

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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
Material	Stainless Steel
Type	Hexagon Head
Model NO.	M12X40
Connection	Common Bolt
Head Style	Hexagonal
Standard	DIN, ANSI, ISO
Grade	A4-70
Application	Machinery, Chemical Industry, Environmental, Building
Finish	Passivation
Price for The Size	M12X40
Transport Package	CTN, Then in Pallet
Specification	M12X40
Origin	Jiangsu, China
HS Code	7318151090
Production Capacity	100ton/Month
Our advantages	Trustworthy supplier--We use real material always!
Category	Countersunk & Flat-Head Machine Screws

Technical parameters

Bolt and screw standard	DIN/ISO/ASME
Material	SS304/SS316/SS316L

Description

SS316 DIN7991 Hexagon Socket Countersunk Head Cap Screw is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Hexagon Head
Standard: DIN, ANSI, ISO
Material: Stainless Steel
Grade: A4-70
Head Style: Hexagonal
Finish: Passivation
Connection: Common Bolt
Application: Machinery, Chemical Industry, Environmental, Building

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 100 pieces at US$0.29 – 0.34 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 SS316 DIN7991 Hexagon Socket Countersunk Head Cap Screw?

The listed minimum order is 100 pieces, at US$0.29 – 0.34 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$0.34 for 100–499 pieces; US$0.31 for 500–999 pieces; US$0.30 for 1,000–4,999 pieces; US$0.29 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 SS316 DIN7991 Hexagon Socket Countersunk Head Cap Screw?

Type: Hexagon Head; Standard: DIN, ANSI, ISO; Material: Stainless Steel; Grade: A4-70; Head Style: Hexagonal; Finish: Passivation. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, head style, standard, grade and finish. 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 →

Request a quote for this product

US$0.29 – 0.34MOQ 100 piecesGet a quote WA