---
product_id: 550861804
title: "LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm)"
brand: "llb"
price: "$52.80"
currency: USD
in_stock: true
reviews_count: 9
category: "Llb"
url: https://www.desertcart.us/products/550861804-llb-300mm-screws-m10-coach-screws-wood-hex-head-width
store_origin: US
region: United States of America
---

# 300mm length for deep, secure fastening M10 hex head for superior torque grip Zinc plated for corrosion resistance LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm)

**Brand:** llb
**Price:** $52.80
**Availability:** ✅ In Stock

## Summary

> 🔩 Screw it right, screw it tight — the pro’s choice for lasting strength!

## Quick Answers

- **What is this?** LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) by llb
- **How much does it cost?** $52.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/550861804-llb-300mm-screws-m10-coach-screws-wood-hex-head-width)

## Best For

- llb enthusiasts

## Why This Product

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

## Key Features

- • **Hex Head Design:** 17mm wide hex head allows for maximum torque and easy installation with standard tools.
- • **Value Pack of 6:** Six premium coach screws per pack—perfect for multiple projects or professional use.
- • **Durable Zinc Plating:** Corrosion-resistant finish guarantees longevity even in outdoor or harsh environments.
- • **Half Threaded for Grip:** Optimized half-thread design provides strong clamping force while minimizing wood splitting.
- • **Precision Length & Diameter:** 12-inch length with 10mm diameter ensures robust hold in heavy-duty wood and concrete applications.

## Overview

The LLB 300mm M10 coach screws are zinc-plated, half-threaded lag bolts designed for heavy-duty wood and concrete fastening. Featuring a 17mm hex head for superior torque and a 12-inch length for deep penetration, these screws come in packs of six, offering durable, corrosion-resistant performance ideal for professional and DIY wooden construction projects.

## Description

LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) : desertcart.co.uk: DIY & Tools

Review: Quality product - I bought these to screw down through an old railway sleeper as I was standing. My drive quality was good. Very strong. Great value for money and easy to use
Review: Product as described and value for money - Perfect for what was wanted. Was functional and enabled the chunk of wood to be removed as described. Good quality and value for money.

## Features

- Size – Measuring 4mm x 300mm / 0.4" x 12"
- Quality - Half Thread Bolts
- Quantity - Each pack contains 6 Wood Screws
- Wood Screws Galvanised M10
- Perfect For - Connection of Wooden construction elements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CDPR1FJC |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 44,542 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Lag Bolts |
| Colour | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (96) |
| Cutting Diameter | 4 Millimetres |
| Date First Available | 4 Aug. 2023 |
| Finish | Zinc Plated |
| Head Style | Hex |
| Item Package Quantity | 6 |
| Item Weight | 830 g |
| Item diameter | 4 Millimetres |
| Manufacturer | LLB |
| Manufacturer reference | WS.MAR.300 |
| Material | Zinc |
| Number of Pieces | 6 |
| Part number | WS.MAR.300 |
| Shape | Screw |
| Size | 4mm x 300mm / 0.4" x 12" |

## Product Details

- **Exterior finish:** Zinc
- **Head style:** Hex
- **Item dimensions L x W x H:** 30 x 1 x 1.7 centimetres
- **Material:** Zinc
- **Thread size:** M10

## Images

![LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) - Image 1](https://m.media-amazon.com/images/I/81cmhnv55cL.jpg)
![LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) - Image 2](https://m.media-amazon.com/images/I/61koqmKEzeL.jpg)
![LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) - Image 3](https://m.media-amazon.com/images/I/81vEacJAfbL.jpg)
![LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) - Image 4](https://m.media-amazon.com/images/I/91aIE9kzFqL.jpg)
![LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm) - Image 5](https://m.media-amazon.com/images/I/71edASMg3xL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product
*by P***S on 4 January 2026*

I bought these to screw down through an old railway sleeper as I was standing. My drive quality was good. Very strong. Great value for money and easy to use

### ⭐⭐⭐⭐⭐ Product as described and value for money
*by S***N on 19 July 2025*

Perfect for what was wanted. Was functional and enabled the chunk of wood to be removed as described. Good quality and value for money.

### ⭐⭐⭐⭐ Constitution heavy duty screws
*by R***R on 29 March 2025*

They are ok bend under pressure

## Frequently Bought Together

- LLB 300mm Screws M10 Coach Screws Wood Hex Head Width 17mm Pack of 6 Zinc Plated Sleeper Concrete Screw Hexagon Lag Half Thread Bolts Silver Long 12 inch x 0.4 inch (10mm x 300mm)
- M10 Washers, M10 x 25mm Penny Washers, A2 304 Stainless Steel Washers, Flat Repair Washer, Large Metal Washers, Plain Round Chrome Washers for Screws & Bolts(Pack of 20)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/550861804-llb-300mm-screws-m10-coach-screws-wood-hex-head-width](https://www.desertcart.us/products/550861804-llb-300mm-screws-m10-coach-screws-wood-hex-head-width)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-27*