---
product_id: 40637408
title: "Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4\"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100"
brand: "bolt dropper"
price: "¥728"
currency: JPY
in_stock: false
reviews_count: 13
url: https://www.desertcart.jp/products/40637408-bolt-dropper-t-nut-wood-insert-carbon-steel-black-zinc
store_origin: JP
region: Japan
---

# Lifetime guarantee for unmatched durability 1/4"-20 Unified National Coarse thread for reliable fit Zinc-coated steel for superior rust resistance Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100

**Brand:** bolt dropper
**Price:** ¥728
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Secure your projects with the T-Nut that outlasts the rest!

## Quick Answers

- **What is this?** Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 by bolt dropper
- **How much does it cost?** ¥728 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/40637408-bolt-dropper-t-nut-wood-insert-carbon-steel-black-zinc)

## Best For

- bolt dropper enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Value:** Available in bulk packs, offering unbeatable cost-efficiency over retail alternatives.
- • **Built to Last:** Premium zinc-coated carbon steel ensures long-lasting corrosion resistance indoors and outdoors.
- • **Precision Fit:** Standard 1/4"-20 UNC threading guarantees seamless compatibility with your hardware projects.
- • **Lifetime Confidence:** Backed by a no-hassle lifetime guarantee, so you never worry about wear or rust.
- • **Trusted Performance:** Rated #46 in T-Nuts with 4.7 stars from over 2,800 reviews—join the community of pros who rely on Bolt Dropper.

## Overview

The Bolt Dropper T-Nut is a corrosion-resistant fastening solution crafted from zinc-coated carbon steel, designed for both indoor and outdoor durability. Featuring a standard 1/4"-20 UNC thread and a flat screw head style, it offers reliable performance backed by a lifetime guarantee. Highly rated and competitively priced in bulk, it’s the go-to choice for professionals seeking strength, longevity, and value.

## Description

Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100: desertcart.com: Industrial & Scientific

Review: Great product - Great value. I don't many. Should last a long time.
Review: Great T-nuts - Our big box store is always out of these and when they do have them they are like $2.50 a PAIR! Outrageous! These were a great value by the 100 bulk pack and they arrived in 2 days. I will be buying more of them on desertcart. Well made and they work great. A+++

## Features

- High Quality Steel: This T Nut is zinc coated steel which is one of the most prevalent types of corrosion-resistant coatings, making it last longer than other nuts on the market today
- T Nuts You Can Depend On: Our T Nuts are very strong and are great for both indoor and outdoor use; This zinc-coated carbon steel is superior to regular steel and provides excellent rust resistance
- 【T Nuts You Can Depend On】Our T nuts are very strong and are great for both indoor and outdoor use; This zinc-coated steel is superior to regular steel and provides excellent rust resistance
- 【Lifetime Guarantee】We are so confident that our product is the best on the market that we offer a No Hassle Lifetime Guarantee

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MSVU3WF |
| Best Sellers Rank | #180,949 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #205 in T-Nuts |
| Brand | Bolt Dropper |
| Color | Zinc Plated |
| Compatible Groove Diameter | 0.25 inches |
| Customer Reviews | 4.7 out of 5 stars 3,084 Reviews |
| Exterior Finish | Carbon Steel,Steel,Zinc Coated |
| Fastener Type | Tee |
| Finish Types | Zinc Plated |
| Global Trade Identification Number | 00810109190171 |
| Grade Rating | industrial |
| Inside Thread Size | 1/4 inch |
| Item Diameter | 0.25 inches |
| Item Dimensions | 0.75 x 0.75 x 0.38 inches |
| Manufacturer | Bolt Dropper |
| Material | Carbon Steel |
| Material Type | Carbon Steel |
| Metal Type | Alloy Steel |
| Number Of Items | 1 |
| Number of Pieces | 100 |
| Outside Diameter | 0.25 inches |
| Part Number | T-Nuts | Choose Size/Quantity |
| Screw Head Style | Flat |
| Set Name | Bolt Dropper T-Nut Set (100 Piece) |
| Size Name | 1/4"-20 |
| Thread Class | Class 2A |
| Thread Size | 1/4 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse (Unc) |
| UPC | 791758461068 |
| Unit Count | 100 Count |

## Product Details

- **Color:** Zinc Plated
- **Exterior Finish:** Carbon Steel,Steel,Zinc Coated
- **Fastener Type:** Tee
- **Material:** Carbon Steel
- **Thread Size:** 1/4

## Images

![Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 - Image 1](https://m.media-amazon.com/images/I/81jxvE67SfL.jpg)
![Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 - Image 2](https://m.media-amazon.com/images/I/81qU135Np5L.jpg)
![Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 - Image 3](https://m.media-amazon.com/images/I/71Y00VDV5DL.jpg)
![Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 - Image 4](https://m.media-amazon.com/images/I/91SKmGZH7TL.jpg)
![Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100 - Image 5](https://m.media-amazon.com/images/I/715PehSq3pL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by M***N on July 4, 2026*

Great value. I don't many. Should last a long time.

### ⭐⭐⭐⭐⭐ Great T-nuts
*by M***N on February 11, 2024*

Our big box store is always out of these and when they do have them they are like $2.50 a PAIR! Outrageous! These were a great value by the 100 bulk pack and they arrived in 2 days. I will be buying more of them on Amazon. Well made and they work great. A+++

### ⭐⭐⭐⭐⭐ Some helpful information for CNC router users
*by A***R on November 10, 2018*

I bought some of these in the 1/4 x 20 size to make a custom spoil board for my Shopbot desktop router. I really wanted some without the barbs on the back, but I figured at $10, I'd take a chance. They worked out exactly as I hoped they would. Since these were on the back of the spoil board to provide hold down locations from the top, I took a pair of pliers and easily broke the barbs off as the MDF I use would have never survived those barbs. I then drilled a 3/8 hole in a piece of mild steel and used it as an anvil to flatten the rim of the Tee Nut out. For those who are interested, I used a .800" x .075 counter bore on the back with a central hole through the spill board of .310" diameter. This required tapping them in with a mallet and I used a flat punch to make sure they were seated into the counterbore so they would not contact the machine bed. It's a little more work than buying the brad hole version, but they are insanely cheap. When this spoil board is used up, I intend to just use a 1/4 x 20 bolt to drive them out from the front and reuse them. A great product at a great price. BTW, none had tight or distorted threads, all were free running! My only complaint is I wish they made these with just a round rim for the same price so you didn't have to remove the barbs.

## Frequently Bought Together

- Bolt Dropper T-Nut Wood Insert, Carbon Steel, Black Zinc Finish, 4-Prong 1/4"-20x5/16, Flush Surface Fasteners for Wood, Particle, or Composite Materials Workpiece, Set of 100, Salted Pecans
- 1/4-20 x 1 Button Head Socket Cap Bolts Screws, 304 Stainless Steel 18-8, Allen Hex Drive, Bright Finish, Fully Machine Thread, Pack of 25
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**Shop now:** [https://www.desertcart.jp/products/40637408-bolt-dropper-t-nut-wood-insert-carbon-steel-black-zinc](https://www.desertcart.jp/products/40637408-bolt-dropper-t-nut-wood-insert-carbon-steel-black-zinc)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-06*