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Screws › Countersunk & Flat-Head Machine Screws

GB/T2673 304 Hexalobular Socket Countersunk Head Screws

Updated 2026-11-04 · Markdown version

Model no. M6-M20

US$0.36 – 2.40 / piece

MOQ 100 pieces · Final price confirmed in your quote

Head Style: Counter Sunk Bolt
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Grade: 6.8
Material: Stainless 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.	M6-M20
Groove	Flower
Connection	Common Bolt
Head Style	Counter Sunk Bolt
Standard	DIN, GB, ANSI, BSW, JIS, GOST
Grade	6.8
MOQ	100PCS
Transport Package	Wooden Case Packaging
Specification	M6-M20
Origin	China
HS Code	8108909000
Production Capacity	1000000 PCS/Month
Customization	Available
Material	Stainless Steel
Type	Round Head
Stainless Steel	SS201, SS303, SS304, SS316,SS316L,SS904L,F593
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,
Titanium alloy	GR1,GR2,GR5,GR7-GR23
Other fasteners in stainless steel and titanium alloy	We need more detail as follow. This will allow us to give you an accurate quotation.
Product	________
Measure	_______ all (Inside Diameter) x_______(Outside Diameter)x_______(Thickness)
Order Quantity	_________________pcs
Where to Shipping	_______________
Transportation	If you are interested in our products, please take action to buy or wholesale high quality titanium & stainless steel bolts, nuts and fasteners from our factory.
Category	Countersunk & Flat-Head Machine Screws

Technical parameters

Standard:	GB/T 2673-2007 Hexalobular Socket Countersunk Head Screws
Sizes	M6-M20
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,
Titanium alloy:	GR1,GR2,GR5,GR7-GR23
NICKLE ALLOY	N4,N6,200,201 AND C276
Finishing	Original,polished Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide, Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
Process	cold forging M6-M20	or customed

Description

GB/T2673 304 Hexalobular Socket Countersunk Head Screws is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Round Head
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Material: Stainless Steel
Grade: 6.8
Head Style: Counter Sunk Bolt
Groove: Flower
Connection: Common Bolt
Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593

Available configurations include head style, standard, grade and material. 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$0.36 – 2.40 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 GB/T2673 304 Hexalobular Socket Countersunk Head Screws?

The listed minimum order is 100 pieces, at US$0.36 – 2.40 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 GB/T2673 304 Hexalobular Socket Countersunk Head Screws?

Type: Round Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Stainless Steel; Grade: 6.8; Head Style: Counter Sunk Bolt; Groove: Flower. 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 and material. 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

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US$0.36 – 2.40MOQ 100 piecesGet a quote WA