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Bolts › Countersunk, Plow & Elevator Bolts

Black Oxide Hex Socket Countersunk Head Bolt Grade 10.9 for Heavy Duty Fastening

Updated 2026-11-03 · Markdown version

US$0.127,000–19,999 pieces

US$0.09620,000–49,999 pieces

US$0.07250,000+ pieces

MOQ 7,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Head Style: Counter Sunk Bolt
Standard: DIN, GB, ANSI, BSW, GOST
Grade: 10.9
Exterior Finish: Customized
Package Size: 12.00cm * 10.00cm * 5.00cm

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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	Carbon Steel
Type	Countersunk Head
Groove	Hexagon
Connection	Common Bolt
Head Style	Counter Sunk Bolt
Standard	DIN, GB, ANSI, BSW, GOST
Grade	10.9
Product Name	Black Hex Socket Countersunk Screw
Service	One-Stop Service
Box	Customer's Brand Box/Plain Box
MOQ	Can Be Negotiated
Shipment	by Sea / Truck / Plane / Express
Package	Standard Package or Customer's Packing
Exterior Finish	Customized
Quality	100% Tested
Price	Factory Price
Lead Time	15-30 Days
Mark	Customized or Factory Mark
Sample	Available
Used	Machinery, Chemical Industry, Environmental
Online Sales	24 Hours Online
OEM/ODM	Available
Transport Package	Carton
Specification	M4-M20
Origin	Zhejiang, China
HS Code	8501109101
Production Capacity	100tons Per Month
Package Size	12.00cm * 10.00cm * 5.00cm
Package Gross Weight	0.500kg
Lead Time	15 days (1 - 7000 Pieces) 25 days (7001 - 20000 Pieces) 31 days (20001 - 50000 Pieces) To be negotiated ( > 50000 Pieces)
Category	Countersunk, Plow & Elevator Bolts

Technical parameters

China Wholesale Carbon Steel Black Oxide Grade 10.9 Hex Socket Countersunk Screw DIN7991

Product Name	Carbon Steel Black Oxide DIN 7991 Hex Socket Countersunk Head Screw
Product Type	Flat Head Socket Cap Screw / Countersunk Hex Socket Screw
Standard	DIN 7991 / ISO 10642 or Customer Specification
Size Range	M3–M20; Standard and Custom Sizes Available
Material	Carbon Steel
Property Class	8.8 / 10.9 / 12.9 Available
Thread Type	Metric Coarse Thread / Fine Thread
Drive Type	Hex Socket / Allen Drive
Surface Finish	Black Oxide; Zinc Plated; Zinc Flake Coating; Other Finishes Available upon Request
Customization	Diameter, Length, Thread Pitch, Head Dimensions, Property Class, Surface Finish, Marking, Label and Packaging
Packaging	Bulk Packing, Box, Carton, Pallet or Customized Export Packaging
OEM / ODM	Available according to Drawings, Samples or Technical Requirements

Thread Sized	M2	M2.5	M3	M4	M5	M6	M8
P	Pitch	0.4	0.45	0.5	0.7	0.8	1	1.25
b	Ref.	/	/	18	20	22	24	28
dk	Theoretical	max	4.7	5.88	6.72	8.96	11.2	13.44	17.92
Actual	max	4.09	5.08	5.81	7.96	10.07	12.16	16.43
min	3.7	4.8	5.54	7.53	9.43	11.34	15.24
ds	max	2	2.5	3	4	5	6	8
min	1.86	2.36	2.86	3.82	4.82	5.82	7.78
e	min	1.454	1.733	2.303	2.873	3.443	4.583	5.723
k	Ref.	max	1.35	1.69	1.86	2.48	3.1	3.72	4.96
min	1.13	1.408	1.522	2.121	2.669	3.218	4.366
r	min	0.1	0.1	0.1	0.2	0.2	0.25	0.4
s	Nominal Size	1.3	1.5	2	2.5	3	4	5
max	1.36	1.56	2.08	2.58	3.08	4.095	5.14
min	1.32	1.52	2.02	2.52	3.02	4.02	5.02
t	max	0.85	1.15	1.25	1.65	2	2.5	3.2
min	0.75	1	1.1	1.4	1.75	2.2	2.9
Minimum tensile load(N)-8.8	1330	2180	3220	5620	9120	12900	23400
Minimum tensile load(N)-10.9	1730	2820	4190	7300	11800	16800	30500
Minimum tensile load(N)-12.9/12.9	2020	3310	4910	8640	13900	19700	35800
Minimum tensile load(N)-50	830	1360	2020	3510	5680	8080	14700
Minimum tensile load(N)-70	1170	1900	2820	4920	7940	11300	20600
Minimum tensile load(N)-80	1330	2180	3220	5620	9120	12900	23400

A1: We are a professional fastener supplier with manufacturing and sourcing capabilities, providing bolts, nuts, washers, screws, threaded rods and custom fasteners for global B2B buyers.

A2: Yes. We can supply standard fasteners according to DIN, ISO, ANSI, ASTM and other standards, and also support non-standard fasteners based on drawings or samples.

A3: We can provide carbon steel, stainless steel, alloy steel, brass and other materials according to the application, strength requirement and customer specifications.

A4: Yes. We support OEM fastener production, including custom size, thread, material, surface finish, marking, packaging and drawing-based manufacturing.

A5: We inspect dimensions, threads, surface finish, hardness and appearance before shipment. Inspection reports and related documents can be provided according to order requirements.

A6: Please provide product name, standard or drawing, size, material, grade, surface finish, quantity, packaging requirement and application. This helps us offer an accurate quotation quickly.

Description

Black Oxide Hex Socket Countersunk Head Bolt Grade 10.9 for Heavy Duty Fastening is part of our countersunk, plow & elevator bolts range (Bolts).

Key details

Type: Countersunk Head
Standard: DIN, GB, ANSI, BSW, GOST
Material: Carbon Steel
Grade: 10.9
Head Style: Counter Sunk Bolt
Groove: Hexagon
Connection: Common Bolt
Product Name: Black Hex Socket Countersunk Screw

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 7,000 pieces at US$0.072 – 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 Black Oxide Hex Socket Countersunk Head Bolt Grade 10.9 for Heavy Duty Fastening?

The listed minimum order is 7,000 pieces, at US$0.072 – 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 7,000–19,999 pieces; US$0.096 for 20,000–49,999 pieces; US$0.072 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Black Oxide Hex Socket Countersunk Head Bolt Grade 10.9 for Heavy Duty Fastening?

Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, GOST; Material: Carbon Steel; Grade: 10.9; Head Style: Counter Sunk Bolt; Groove: Hexagon. 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 exterior 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, plow & elevator bolts are available?

The Countersunk, Plow & Elevator Bolts category lists 533 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-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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Request a quote for this product

US$0.072 – 0.12MOQ 7,000 piecesGet a quote WA