---
product_id: 34223012
title: "E-Z LOK 400-4-CR Threaded Inserts for Wood, Installation Kit, Stainless Steel, Includes 1/4-20 Knife Thread Inserts (6), Drill, Installation Tool"
brand: "e-z lok"
price: "NT$2944"
currency: TWD
in_stock: true
reviews_count: 11
category: "E Z Lok"
url: https://www.desertcart.tw/products/34223012-e-z-lok-400-4-cr-threaded-inserts-for-wood
store_origin: TW
region: Taiwan
---

# 1/4-20 UNC machine thread 550 MPa max shear strength Complete install kit included E-Z LOK 400-4-CR Threaded Inserts for Wood, Installation Kit, Stainless Steel, Includes 1/4-20 Knife Thread Inserts (6), Drill, Installation Tool

**Brand:** e-z lok
**Price:** NT$2944
**Availability:** ✅ In Stock

## Summary

> 🔧 Bolt your projects like a pro — don’t settle for screws when you can E-Z LOK!

## Quick Answers

- **What is this?** E-Z LOK 400-4-CR Threaded Inserts for Wood, Installation Kit, Stainless Steel, Includes 1/4-20 Knife Thread Inserts (6), Drill, Installation Tool by e-z lok
- **How much does it cost?** NT$2944 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/34223012-e-z-lok-400-4-cr-threaded-inserts-for-wood)

## Best For

- e-z lok enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Installation Kit:** Includes drill, driver, and 6 stainless steel inserts for seamless, hassle-free setup.
- • **Versatile Wood Compatibility:** Perfect for furniture, cabinetry, storm windows, and marine projects—engineered for real wood, not plywood.
- • **Proprietary Knife Thread Design:** Maximizes holding power with a unique external thread for unbeatable grip and stability.
- • **Superior Stainless Steel Strength:** 550 MPa shear strength ensures long-lasting, deformation-resistant performance.
- • **Precision Engineered Machine Threads:** Upgrade wood joints with durable 1/4-20 UNC threads for rock-solid connections.

## Overview

E-Z LOK 400-4-CR Threaded Inserts kit delivers premium stainless steel 1/4-20 UNC machine threads designed specifically for wood applications. The kit includes all necessary tools for quick, precise installation, providing superior holding power with a proprietary knife thread design and a maximum shear strength of 550 MPa. Ideal for professional-grade furniture, cabinetry, and marine projects, this solution transforms wood joints into durable, bolt-like connections that outperform traditional wood screws.

## Description

E-Z LOK Knife Thread inserts provide an easy to use solution for adding machine threads to wood. Ideal for use in virtually any wood (not recommended for plywood), these inserts use a proprietary external thread for superior holding power.

Review: Perfect for a solid neck to body connection. - I recently built myself a custom Stratocaster with a black limba body and solid rosewood neck from Warmoth. These guitars are referred to as having bolt on necks when they actually use wood screws. That term has always bothered me. For a better, more solid connection these inserts are perfect and the guitar will actually have a bolt on neck. A solid neck to body connection is crucial for tone transfer and this method is considered superior to just using wood screws. It's a little tricky getting everything aligned properly before drilling the holes for the inserts but measure twice and drill once is the way. Clamp the neck to the body and use the e strings as alignment guides and you can't go wrong whej pre-drilling the holes for the inserts. I recommend gluing these inserts in with a good marine epoxy for maximum hold.
Review: Better than brass or zinc - I had struggled with brass versions of this type of inserts and the zinc variation with the hex drive. These tool included with this kit ensured alignment and the stainless material didn’t deform like the brass. It was cheaper to buy two kits to get the quantity of inserts I needed.

## Features

- Installation Kit With Inserts, Drill And Driver
- Quickly Install With Included Tools
- Brass, UNC Threads
- Provides a strong machine thread in wood
- Designed For Use In Furniture, Cabinetry, Storm Windows and Marine Applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B015CAPM9Q |
| Best Sellers Rank | #61,814 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Helical Threaded Inserts |
| Compatible groove diameter | 0.25 Inches |
| Date First Available | September 14, 2015 |
| Fastener Type | Insert |
| Finish Type | Brass |
| Global Trade Identification Number | 00847554007457 |
| Head Style | Flat |
| Item Weight | 4 ounces |
| Item model number | 400-4-CR |
| Manufacturer | EZ-Lok |
| Maximum Shear Strength | 550 MPa |
| Number of Items | 1 |
| Number of Pieces | 6 |
| Product Dimensions | 8 x 2.9 x 1.1 inches |
| Shape | Round |
| Thread Size | 1/4"-20 |
| UPC | 847554007457 |

## Product Details

- **Brand:** E-Z LOK
- **Color:** stainless steel
- **Item dimensions L x W x H:** 8 x 2.9 x 1.1 inches
- **Material:** Stainless Steel
- **Size:** 1/4-20

## Images

![E-Z LOK 400-4-CR Threaded Inserts for Wood, Installation Kit, Stainless Steel, Includes 1/4-20 Knife Thread Inserts (6), Drill, Installation Tool - Image 1](https://m.media-amazon.com/images/I/61AZYs3-MML.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for a solid neck to body connection.
*by T***L on September 14, 2023*

I recently built myself a custom Stratocaster with a black limba body and solid rosewood neck from Warmoth. These guitars are referred to as having bolt on necks when they actually use wood screws. That term has always bothered me. For a better, more solid connection these inserts are perfect and the guitar will actually have a bolt on neck. A solid neck to body connection is crucial for tone transfer and this method is considered superior to just using wood screws. It's a little tricky getting everything aligned properly before drilling the holes for the inserts but measure twice and drill once is the way. Clamp the neck to the body and use the e strings as alignment guides and you can't go wrong whej pre-drilling the holes for the inserts. I recommend gluing these inserts in with a good marine epoxy for maximum hold.

### ⭐⭐⭐⭐⭐ Better than brass or zinc
*by S***E on November 19, 2025*

I had struggled with brass versions of this type of inserts and the zinc variation with the hex drive. These tool included with this kit ensured alignment and the stainless material didn’t deform like the brass. It was cheaper to buy two kits to get the quantity of inserts I needed.

### ⭐⭐⭐⭐⭐ So much better than the brass ones from hardware store
*by R***N on July 23, 2021*

I am putting these in a piece of Mahogany for a guitar project in working on. I first tried some brass ones from a local hardware store without the tool. The top area shattered each time and I had to extract them. This kit with the tool has gone in so much easier each time.

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-23*