---
product_id: 714662500
title: "Rustic Square Head Lag Screws 1/4\" x 3\" (50 pcs) Black Oxide by Makers Bolt"
brand: "makers bolt"
price: "€ 132.18"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/714662500-rustic-square-head-lag-screws-1-4-x-3-50
store_origin: IE
region: Ireland
---

# authentic black oxide finish with corrosion resistance 50-piece bulk pack for serious projects 3/8" square head for max torque Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt

**Brand:** makers bolt
**Price:** € 132.18
**Availability:** ✅ In Stock

## Summary

> ⚒️ Nail your vintage vibe with every turn!

## Quick Answers

- **What is this?** Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt by makers bolt
- **How much does it cost?** € 132.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/714662500-rustic-square-head-lag-screws-1-4-x-3-50)

## Best For

- makers bolt enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Ready for Makers:** 50 screws per pack means you’re equipped for large-scale projects or multiple creative ventures without constant reordering.
- • **Enduring Rustic Finish:** Black oxide coating with light oil resists corrosion while aging gracefully—no peeling or chipping, just character over time.
- • **Precision Fit & Torque:** Requires pre-drilled pilot holes and installs with a 3/8" wrench or 8-point socket for superior grip and torque control.
- • **Vintage Craftsmanship Revival:** Square head design channels the timeless charm of hand-forged bolts, perfect for authentic restoration and bespoke builds.
- • **Authenticity Meets Modern Quality:** Crafted from durable alloy steel in Thailand, packaged in the USA, blending heritage style with reliable performance.

## Overview

These 1/4" x 3" Rustic Square Head Lag Screws by Makers Bolt offer a rare, antique-style square head design with a black oxide finish that resists corrosion and develops a unique patina over time. Sold in a convenient 50-piece pack, they require pre-drilled holes and install with standard 3/8" tools, making them ideal for woodworkers, restoration pros, and makers seeking authentic, durable fasteners with a handcrafted aesthetic.

## Description

A square head lag screw, also known as a square head lag bolt or coach screw, provides a tranditional vintage look for your project. This style of fastener was orginially hand-forged by blacksmiths until the Industrial Revolution, when the hex-head became ubiquitous. The square-head is now sought out by blacksmiths, woodworkers, furniture builders, restoration specialists, and other makers who are looking to give their project an authentic finishing touch. The traditional black oxide finish contains a light oil coating, just like they used to, to help prevent corrosion. Zinc plated fasteners that are more typical at your hardware store do not require oil to prevent corrosion due to the zinc finish, but they also don't look rustic. It will not scratch or peel off like painted, powdercoated, or black phosphate finishes. In contrast to mass-produced, zinc hex lag bolts, the finish of these bolts will slightly wear over time to produce a custom, hand-crafted appearance. Due to the large amount of torque that can be achieved by a square-head lag screw during installation, a pilot hole is required to prevent the screw from breaking during embedment. NOTE: most typical sockets are 12-point (designed for hex-head bolts) and will not work with square-head bolts. An adjustable crescent, 3/8" wrench, or 3/8" 8-point socket is used for installation. These bolts are manufactured in Thailand and packaged in the USA.

## Features

- Head size: 3/8"
- Square head lag bolts are a hard to find antique bolt style
- NOTE: The rustic black oxide finish has a light oil coating for corrosion resistance during transport and storage, just like the lag bolts of 100 years ago.
- 50 Screws
- Requires pre-drilled hole and installs with wrench or 3/8" 8-point socket

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Alloy Steel |
| Head Style | Square |
| Exterior Finish | Black Oxide,Black Oxide Finish |
| Thread Size | 1/4 x 3 |
| Metal Type | Zinc |
| Brand | MAKERS BOLT |
| Colour | Black Oxide |
| Head Type | Coach |
| Item Weight | 26.2 Ounces |
| Thread Type | UNC |
| Thread Coverage | Partially Threaded |
| Fastener Type | Lag Bolt |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Thread Style | Right Hand Partially Threaded |
| Thread Class | Standard |
| Fastener Size | 1/4-inch |
| Size | 1/4 x 3 (50 pcs) |
| Compatible groove diameter | 0.25 Inches |
| Number of Pieces | 50 |
| UPC | 850020465408 |
| Manufacturer | small parts |
| Country of Origin | USA |
| Item model number | 254877 |
| Package Dimensions | 11.1 x 8.7 x 4.9 cm; 742.76 g |
| ASIN | B092SVSRPP |

## Product Details

- **Material:** Alloy Steel
- **Head Style:** Square
- **Exterior Finish:** Black Oxide,Black Oxide Finish
- **Thread Size:** 1/4 x 3
- **Metal Type:** Zinc

## Images

![Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt - Image 1](https://m.media-amazon.com/images/I/61SRCNzCcJL.jpg)
![Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt - Image 2](https://m.media-amazon.com/images/I/A1g6Geu3BCL.jpg)
![Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt - Image 3](https://m.media-amazon.com/images/I/A1ZmiAZxZ5L.jpg)
![Rustic Square Head Lag Screws 1/4" x 3" (50 pcs) Black Oxide by Makers Bolt - Image 4](https://m.media-amazon.com/images/I/91G5pZEXgDL.jpg)

## Available Options

This product comes in different **Size** options.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-22*