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Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut

Updated 2026-11-04 · Markdown version

Model no. Hex Socket Flat Head Lock Nut

US$0.012 – 0.60 / piece

MOQ 1,000 pieces · Final price confirmed in your quote

Material: Stainless Steel
Head Style: Flat Head
Standard: DIN, ANSI, GB, JIS, GOST, BSW
Grade: 8.8
Thread Nominal (M): M2 M2.5 M3 M4 M5 M6 M8 M10
Pitch (P): 1.5 - 5.5 mm
Hexagonal Side Length: 17 - 93.7 mm
Surface: Primary Color

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	Flat Head Hexagon Nuts
Model NO.	Hex Socket Flat Head Lock Nut
Connection	Common Bolt
Head Style	Flat Head
Standard	DIN, ANSI, GB, JIS, GOST, BSW
Grade	8.8
Product Name	Flat Head Hexagon Nuts
Keywords	Non Standard Fastener
Thread Nominal (M)	M2 M2.5 M3 M4 M5 M6 M8 M10
Pitch (P)	1.5 - 5.5 mm
Thickness	8 - 50.8 mm
Hexagonal Side Length	17 - 93.7 mm
Surface	Primary Color
Packaging	Plastic Bag / Paper Box
MOQ	10000PCS
Sample	Accept
OEM & ODM Custom	Accept
Logo Custom	Accept
Transport Package	Standard Shipping Packaging or Customized
Specification	Standard Specifications Or Customized
Origin	Zhejiang, China
Production Capacity	5000000 PCS/Year
Copper nut	good conductivity.
Aluminum nut	light and corrosion resistant.
Galvanized nut	improves corrosion resistance.
Nickel-plated nut	improves aesthetics and corrosion resistance.
Blackened nut	improves corrosion resistance and aesthetics.
Carbon steel	the most common material, with good strength and wear resistance, suitable for most conventional applications.
Stainless steel	has excellent corrosion resistance and is suitable for humid or corrosive environments.
Alloy steel	has higher strength and hardness, suitable for high load and high-stress occasions.
Copper	has good electrical and thermal conductivity, suitable for electrical and electronic equipment.
Aluminum	lightweight, corrosion resistant, suitable for aviation and automotive industries.
Plastic	lightweight, corrosion resistant, suitable for light load and non-metallic connections.
Material preparation	select the appropriate material, and cut and form it.
Cold heading	press the material into the preliminary shape of the nut through a cold heading machine.
Thread processing	use a threading machine or a tapping machine to process the thread inside the nut.
Heat treatment	Heat treatment is performed on the nuts to improve their hardness and strength.
Surface treatment	Surface treatments such as galvanizing, nickel plating, and blackening are performed to improve the corrosion resistance and aesthetics of the nuts.
Quality inspection	The nuts are inspected for size, thread accuracy, hardness, etc. to ensure that they meet the standards.
Raw material procurement	Purchase the corresponding raw materials according to the material requirements of the nuts.
Material cutting	Cut the raw materials into sizes suitable for processing.
Packaging and delivery	Qualified nuts are packaged and shipped to customers.
Category	Hex & Other Standard Nuts

Technical parameters

Product Information
Name	Flat Head Hexagon Nuts
Standard	National Standard
Material	304 Stainless Steel
Surface	Primary Color
Packaging	Plastic Bag / Paper Box

The Above Data Is A Single Batch Of Manual Measurement Data, There Is A Certain Error, Please Be Careful If You Mind Unit: Mm
Nominal Diameter	Pitch	dk	k	L	t
d	P	max	min	max	min	max	min	min
M2	0.4	4	3.7	1.6	1.46	4.24	3.76	X
M2.5	0.45	5	4.7	2.1	1.96	4.2	3.8	X
M3	0.5	6.1	5.7	2.4	2.2	4	3.8	X
M4	0.7	8.1	7.7	2.9	2.7	6	5.8	X
M5	0.8	9.5	9.14	3.7	3.52	6.2	5.6	X
M6	1	12	11.6	4.3	4	10	9.8	X
M8	1.25	16	15.57	6	5.7	16.35	15.65	X
M10	1.5	20	19.48	7.5	7.14	35.5	34.5	X

Description

Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut is part of our hex & other standard nuts range (Nuts).

Key details

Type: Flat Head Hexagon Nuts
Standard: DIN, ANSI, GB, JIS, GOST, BSW
Material: Stainless Steel
Grade: 8.8
Head Style: Flat Head
Connection: Common Bolt
Product Name: Flat Head Hexagon Nuts
Keywords: Non Standard Fastener

Available configurations include material, head style, standard, grade and thread nominal (m). Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.012 – 0.60 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 Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut?

The listed minimum order is 1,000 pieces, at US$0.012 – 0.60 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 Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut?

Type: Flat Head Hexagon Nuts; Standard: DIN, ANSI, GB, JIS, GOST, BSW; Material: Stainless Steel; Grade: 8.8; Head Style: Flat Head; Connection: Common Bolt. 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 thread nominal (m). 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 & other standard nuts are available?

The Hex & Other Standard Nuts category lists 8,354 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/

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$0.012 – 0.60MOQ 1,000 piecesGet a quote WA