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Hex Socket Bolt Flat Head Hex Bolt Hex Socket Countersunk DIN7991 Machine Screw
  • Standard & made-to-drawing parts
  • Checked before shipping
  • Air, sea & express delivery
Bolts › Hex-Head Bolts

Hex Socket Bolt Flat Head Hex Bolt Hex Socket Countersunk DIN7991 Machine Screw

Updated 2026-11-04 · Markdown version

US$0.1250,000–99,999 pieces US$0.096100,000+ pieces

MOQ 50,000 pieces · Final price confirmed in your quote

Head Style
Counter Sunk Bolt
Standard
DIN, GB
Grade
8.8 /10.9
Length
3-150mm
Package Size
10.00cm * 10.00cm * 8.00cm
Material
Stainless Steel
Packing type
1. Bulk packing in wowen bag.
Get a quote

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

GrooveHexagon
ConnectionCommon Bolt
Head StyleCounter Sunk Bolt
StandardDIN, GB
Grade8.8 /10.9
ProductsDIN7991 Machine Screw
MOQ1 Ton Each Size
ApplicationGeneral Industry/Automotive Industry/Retail Indust
Length3-150mm
Transport PackageBox Package+Carton
SpecificationM2-M12
OriginTianjin, China
HS Code7318150000
Production Capacity10000 T/ Year
Package Size10.00cm * 10.00cm * 8.00cm
Package Gross Weight2.000kg
CustomizationAvailable
MaterialStainless Steel
TypeHexagon Head
Shipping CostContact the supplier about freight and estimated delivery time.
Packing type1. Bulk packing in wowen bag.
CategoryHex-Head Bolts

Technical parameters

NameDIN7991 Hexagon socket countersunk head machine screws
Place of OriginTianjin, China
SizeM3-M12 or non-standard as request&design
Finishplain, zinc plated, black oxide, hot dip galv.et
Head Typecountersunk head
MaterialCarbon steel, stainless steel, alloys steel etc.
GradeA2,A4,4.8,8.8,10.9,12.9.etc
StandardGB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc
Non-standardsOEM is available, according to drawing or samples
SamplesSamples are free.
PackageBulk in master cartons, then on pallets, or according to customers' requirement.
PaymentT/T

Description

Hex Socket Bolt Flat Head Hex Bolt Hex Socket Countersunk DIN7991 Machine Screw is part of our hex-head bolts range (Bolts).

Key details

  • Type: Hexagon Head
  • Standard: DIN, GB
  • Material: Stainless Steel
  • Grade: 8.8 /10.9
  • Length: 3-150mm
  • Head Style: Counter Sunk Bolt
  • Groove: Hexagon
  • Connection: Common Bolt

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 50,000 pieces at US$0.096 – 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 Hex Socket Bolt Flat Head Hex Bolt Hex Socket Countersunk DIN7991 Machine Screw?

The listed minimum order is 50,000 pieces, at US$0.096 – 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.

How does the price change with quantity?

Volume pricing: US$0.12 for 50,000–99,999 pieces; US$0.096 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Hex Socket Bolt Flat Head Hex Bolt Hex Socket Countersunk DIN7991 Machine Screw?

Type: Hexagon Head; Standard: DIN, GB; Material: Stainless Steel; Grade: 8.8 /10.9; Length: 3-150mm; 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, length and package size. 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 hex-head bolts are available?

The Hex-Head Bolts category lists 8,449 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/hex-head-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
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US$0.096 – 0.12MOQ 50,000 piecesGet a quote