---
title: "Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut"
description: "Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut — Hex & Other Standard Nuts. MOQ 1,000 pieces, US$0.012 – 0.60."
url: https://engineeringhardware.com/product/rust-proof-coating-oem-odm-custom-flat-head-hexagon-socket-connection-nut/
source: Engineering Hardware & Fasteners
---

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

[![Rust-Proof Coating OEM ODM Custom Flat Head Hexagon Socket Connection Nut](https://img.engineeringhardware.com/Rust-Proof-Coating-OEM-ODM-Custom-Flat-Head-Hexagon-Socket-Connection-Nut.webp)](https://img.engineeringhardware.com/Rust-Proof-Coating-OEM-ODM-Custom-Flat-Head-Hexagon-Socket-Connection-Nut.webp)

- Standard & made-to-drawing parts
- Checked before shipping
- Air, sea & express delivery

[Nuts › Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/)

Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/rust-proof-coating-oem-odm-custom-flat-head-hexagon-socket-connection-nut.md)

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

Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Rust-Proof%20Coating%20OEM%20ODM%20Custom%20Flat%20Head%20Hexagon%20Socket%20Connection%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Frust-proof-coating-oem-odm-custom-flat-head-hexagon-socket-connection-nut%2F)

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](https://engineeringhardware.com/fastener-products/nuts/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 |

| 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 |
| The Above Data Is A Single Batch Of Manual Measurement Data, There Is A Certain Error, Please Be Careful If You Mind Unit: Mm |  |  |  |  |  |  |  |  |

## 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/](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

[![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp)

Production floor

[![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp)

Inspection bench

[![Sorting & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp)

Sorting & packing

[![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp)

Parts warehouse

[![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp)

Sample review

[![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp)

Sales office

[More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/)

## Request a quote for this product

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