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Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws

Updated 2026-11-04 · Markdown version

Model no. DIN7991

US$0.12 / piece

MOQ 1 piece · Final price confirmed in your quote

Material: Brass
Head Style: Round
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Grade: 8.8
Finish: Plain
Package Size: 25.00cm * 25.00cm * 15.00cm
Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449
Customized Ideal Fasteners: Our custom-tailored services are based on detailed customer-provided samples and drawings, ensuring the perfect fit for your unique application.

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	Brass
Type	Countersunk Head
Model NO.	DIN7991
Groove	Hexagon Socket
Connection	Common Bolt
Head Style	Round
Standard	DIN, GB, ANSI, BSW, JIS, GOST
Grade	8.8
MOQ	10000pieces
Finish	Plain
Name	Hexagon Socket Countersunk Head Screws
Certificate	ISO9001
Measurement System	Inch, Metric
Transport Package	20-25kg/Carton+900kg Pallet
Specification	M3-M20
Origin	China
HS Code	731815
Production Capacity	1000ton/Month
Package Size	25.00cm * 25.00cm * 15.00cm
Package Gross Weight	25.000kg
Lead Time	5 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces)
Stainless Steel	SS201, SS303, SS304, SS316,SS316L,SS904L,F593
Steel Grade	DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449
M2-M24	Cold Froging,M24-M100 Hot Forging,
Busy season	15-30days,Slack seaon:10-15days
Steel	4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782
https	//bolnut-fastener.en.made-in-china.com/product-group/gbItzfEMYHcd/Socket-head-Screws-1.html?pv_id=1j5q5n3v5ae6&faw_id=null&bv_id=1j5q5nlhv43c
Professional Manufacturer	Every single fastener we produce is crafted with precision and care, strictly adhering to the bespoke specifications and high-performance standards set forth by our valued clients.
Quality Assurance	We employ rigorous durability tests and meticulous technical design evaluations to significantly extend the lifespan and reliability of our fasteners, ensuring remarkable durability.
Cost-Effective Solutions	Leverage our competitive pricing structure, which is underpinned by our robust professional factory production capabilities, to achieve cost efficiency without compromising on quality.
Comprehensive Fastening Solutions	With over a decade of industry experience, we offer an extensive array of part selections tailored to perfectly meet your specific requirements and challenges.
Customized Ideal Fasteners	Our custom-tailored services are based on detailed customer-provided samples and drawings, ensuring the perfect fit for your unique application.
Category	Socket Head Cap & Allen Screws

Technical parameters

Standard	DIN,ASTM/ANSI JIS EN ISO,AS,GB
Material	Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593
Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449
Finishing	Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
Production Process	M2-M24:Cold Froging,M24-M100 Hot Forging,Machining and CNC for Customized fastener
Customized ProductsLead time	Busy season:15-30days,Slack seaon:10-15days
Stock Products	Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782Stainless steel: All DIN Standard stainless steel Bolt
Free samples for standard fastener.
For more information visit: https://bolnut-fastener.en.made-in-china.com/product-group/gbItzfEMYHcd/Socket-head-Screws-1.html?pv_id=1j5q5n3v5ae6&faw_id=null&bv_id=1j5q5nlhv43c

Description

Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws is part of our socket head cap & allen screws range (Screws).

Key details

Type: Countersunk Head
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Material: Brass
Grade: 8.8
Head Style: Round
Groove: Hexagon Socket
Finish: Plain
Connection: Common Bolt

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 1 piece 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 Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws?

The listed minimum order is 1 piece, 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 Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws?

Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Brass; Grade: 8.8; Head Style: Round; Groove: Hexagon Socket. 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 socket head cap & allen screws are available?

The Socket Head Cap & Allen Screws category lists 2,042 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-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

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US$0.12MOQ 1 pieceGet a quote WA