---
product_id: 286720590
title: "M3-M12 Hex Locknuts"
brand: "eastlo"
price: "R250"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Eastlo"
url: https://www.desertcart.co.za/products/286720590-m3-m12-hex-locknuts
store_origin: ZA
region: South Africa
---

# M8 x 1.25mm precision thread Nylon insert prevents loosening 304 stainless steel corrosion resistance M3-M12 Hex Locknuts

**Brand:** eastlo
**Price:** R250
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock it down with confidence — the ultimate fastening upgrade!

## Quick Answers

- **What is this?** M3-M12 Hex Locknuts by eastlo
- **How much does it cost?** R250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/286720590-m3-m12-hex-locknuts)

## Best For

- eastlo enthusiasts

## Why This Product

- Trusted eastlo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pack of 10 for Bulk Projects:** Ready to tackle multiple tasks or professional jobs without frequent reordering.
- • **Vibration-Proof Nylon Insert:** Blue nylon lock insert locks nuts firmly in place, eliminating loosening under stress.
- • **Precision Engineered M8 Threads:** Ensures seamless fit with standard bolts for reliable fastening every time.
- • **Superior 304 Stainless Steel Build:** Delivers industrial-grade strength and unbeatable corrosion resistance in harsh environments.
- • **Flange Design for Enhanced Load Distribution:** Spans larger holes to protect surfaces and improve stability under heavy loads.

## Overview

This pack of 10 M8 x 1.25mm flange washer nylon insert hex locknuts features premium 304 stainless steel construction for exceptional durability and corrosion resistance. Designed to meet DIN6926 standards, these coarse thread UNC nuts include a blue nylon insert that prevents loosening under vibration and torque. The flange base distributes load evenly, making them ideal for demanding industrial and professional applications.

## Description

SIZE:M8 x 1.25mm Packaged Included: 10 PCS About Flange Nylon Inserted Lock Nuts Flanged nylon lock nuts are kind of lock nut with blue nylon insert and greater load-bearing capabilities. The flange design allows the nut to span larger holes than standard nylon stop nut. The nuts are widely used in conjunction with a mating bolt to fasten two or more parts together. Its inner diameter might be slightly smaller than the major diameter of the screw. Then nylon insert locks the nut by friction against the screw under the applied radial compressive force. The high quality 304 stainless steel provide perfect strength and good corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance. Contact Us: If you have any questions when using, please feel free to contact us by desertcart message.

Review: I Lowe good quality. - Good product
Review: Well-made and durable. - Well-made and durable.

## Features

- Nut Type: Flange Washer Head with Blue Nylon Insert Hex Locknuts / Lock Nuts; Specifications meet standard DIN6926
- Thread Diameter: 8mm; Thread Pitch: 1.25mm; Thread Size: M8-1.25; Nut Width: 12.45mm; Overall Length: 10.67-11.10mm
- Will NOT COME LOOSE: With a nylon insert inside, the lock nuts greatly reduce loosening under vibrations and torque. The flange design allows the nut to span larger holes than standard nylon stop nut.
- HIGH QUALITY MATERIAL: 100% Stainless steel 304(18-8) which is superior to regular steel provides good strength and corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance.
- Thread Type: Coarse Thread UNC; Thread Coverage: Full Thread; Package: 10 PCS

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08GC3SG3C |
| Best Sellers Rank | #27,365 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Locknuts |
| Brand | EASTLO |
| Color | Silver |
| Compatible Groove Diameter | 8 Millimeters |
| Customer Reviews | 4.8 4.8 out of 5 stars (203) |
| Drive Style | External Hex |
| Exterior Finish | Stainless Steel |
| Fastener Type | Lock |
| Finish Types | Stainless Steel |
| Grade Rating | industrial |
| Inside Thread Size | M8 x 1 25 |
| Item Diameter | 8 Millimeters |
| Manufacturer | EASTLO |
| Material Type | Stainless Steel |
| Metal Type | Alloy Steel, Stainless Steel |
| Model | IN100907-10 |
| Number of Pieces | 10 |
| Part Number | IN100907-10 |
| Screw Head Style | Hex |
| Size Name | M8-1.25 |
| Thread Class | Coarse |
| Thread Size | M 8 |
| Thread Style | Unified National Coarse (UNC) with 1.25mm pitch |
| Thread Type | Unified National Coarse |
| Unit Count | 10.0 Count |

## Product Details

- **Color:** Silver
- **Exterior Finish:** Stainless Steel
- **Fastener Type:** Lock
- **Material:** Stainless Steel
- **Thread Size:** M 8

## Images

![M3-M12 Hex Locknuts - Image 1](https://m.media-amazon.com/images/I/41woIgebo8L.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Questions & Answers

**Q: What is the flange outer diameter?**
A: Dear Customer, the flange outer diameter for M4 is 9.3mm (approximately). And the outer diameter for m5, m6, m8, m10 is 11.8mm, 14.2mm, 17.9mm, 21.8mm. Hope that could help you make the right choice. Have a nice day.

**Q: I am confused with finishes, what part of the Flange Nut is finish with stainless steel? what part is finish with zinc?**
A: Dear Customer, we're sorry that make you confused. That nylon insert flange locknuts are made of 100% stainless steel 304 and no zinc coating outside. So it could provide great corrosion resistance and very good appearance. Hope that could help you with your project.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I Lowe good quality.
*by L***U on October 22, 2025*

Good product

### ⭐⭐⭐⭐⭐ Well-made and durable.
*by B***G on September 9, 2025*

Well-made and durable.

### ⭐⭐⭐⭐⭐ 1999 GMC Safari front seat floor mount nuts
*by R***R on September 18, 2025*

I had a hard time figuring out what kind of nuts/thread was in use on my 99 GMC Safari van's front seat floor mounting studs. A local auto parts store named like a wine producing area in California sold me some bog-standard (no flange) hex nuts that were the right M12 size, but somehow they gave me the wrong thread pitch (1.5mm, medium thread). So they didn't fit. The original nuts were corroded quite a bit, probably from the carpet padding being saturated with water for an unknown length of time. But I had to hang onto them because I couldn't find a replacement. Anyway, the thread pitch on the seat mount studs turned out to be the coarse metric thread pitch (1.75mm), and the original nuts had smooth integral flanges, and I'm pretty sure they are the type of lock nut that were squeezed at the top so that they got bent out of shape into a triangle that is "too tight" on three sides, and resist loosening through that inherent friction at the top of the nut. Pretty similar in function to these lock nuts with the blue nylon ring at the top. You can thread them on by hand in either case, then ratchet them the rest of the way down. I got the M12x1.75 size of these smooth flange nylon lock nuts and they are an excellent replacement for the corroded originals, which all still looked terrible even after a thorough wire brushing and soaking in vinegar for a while. Most of the flanged nuts I found here had toothed "grabber" flanges, but I wanted a smooth flange just like the original nuts. These are those. Works great. Originals and new nuts in this size both required an 18mm socket, which annoyingly did not come with my new 3/8 drive metric socket set (it unhelpfully had 17mm, 19mm, and a 21mm spark plug socket), so I had to buy an 18mm deep socket separately. Deep because the mounting studs on the front are fairly long. Side note, I picked up one of those adapt-a-socket gimmicks with all the pins in the socket. It's maximum physical size is 19mm (3/4), so it might have worked on the 18mm nuts if I had one at the time, but some of the original nuts basically required a breaker bar to get loose, so that might have broken the gimmick socket. Hard to say. Also the spring action of the pins means you really need to jam the socket down on the nut to get purchase on the nut, especially when you're basically pushing in almost all the pins. Might be usable in an emergency, but I wouldn't want to be using it all the time. Price seems OK for a fairly unusual type of flanged, stainless lock nut in this size. I only needed 8, and now I have 2 spares in case I drop one and lose it.

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**Shop now:** [https://www.desertcart.co.za/products/286720590-m3-m12-hex-locknuts](https://www.desertcart.co.za/products/286720590-m3-m12-hex-locknuts)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-01*