---
product_id: 41805686
title: "Red Head LDT-3840 Large Diameter Tapcon 3/8-Inch by 4-Inch Anchor (50 per Box)"
brand: "itw red head"
price: "493 zł"
currency: PLN
in_stock: true
reviews_count: 8
url: https://www.desertcart.pl/products/41805686-red-head-ldt-3840-large-diameter-tapcon-3-8-inch
store_origin: PL
region: Poland
---

# 50 Pieces 3/8" Thread Size Grade 8 Steel Red Head LDT-3840 Large Diameter Tapcon 3/8-Inch by 4-Inch Anchor (50 per Box)

**Brand:** itw red head
**Price:** 493 zł
**Availability:** ✅ In Stock

## Summary

> 🔨 Secure Your Projects with Confidence!

## Quick Answers

- **What is this?** Red Head LDT-3840 Large Diameter Tapcon 3/8-Inch by 4-Inch Anchor (50 per Box) by itw red head
- **How much does it cost?** 493 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/41805686-red-head-ldt-3840-large-diameter-tapcon-3-8-inch)

## Best For

- itw red head enthusiasts

## Why This Product

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

## Key Features

- • **🛠️ Durable Design:** Hardened carbon steel with zinc plating for long-lasting performance.
- • **📏 Easy Identification:** Stamped length identification code for quick reference.
- • **🔧 Precision Engineering:** Cuts its own threads into concrete for a secure fit.
- • **🔄 Versatile Compatibility:** Use with standard drill bits for hassle-free installation.
- • **🔒 Anti-Rotation Technology:** Finished hex washer head with serrations to prevent rotation.

## Overview

The Red Head LDT-3840 Large Diameter Tapcon is a robust anchoring solution designed for concrete applications. Each box contains 50 high-quality anchors made from hardened carbon steel, featuring a 3/8-inch thread size and a zinc-plated finish for enhanced durability. With its unique ability to cut its own threads, this anchor ensures a secure hold, making it ideal for both professional and DIY projects.

## Description

Red Head LDT-3840 Large Diameter Tapcon 3/8-Inch by 4-Inch Anchor (50 per Box)

## Features

- Cuts it's Own Threads into Concrete
- Anchor Bodies are Made of Hardened Carbon Steel and Zinc Plated, Grade 8
- Finished Hex Washer Head, with Anti-Rotation Serrations
- Anchor is Stamped with a Length Identification Code
- Use Standard Drill Bits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Carbon Steel |
| Drive System | External Hex |
| Head Style | Flanged Hex |
| Item dimensions L x W x H | 8 x 5 x 2.5 inches |
| Exterior Finish | Zinc |
| Thread Size | 3/8" |
| Metal Type | Carbon Steel, Zinc |
| Brand | ITW RED HEAD |
| Head Type | Hex |
| Item Weight | 5.6 Pounds |
| Thread Coverage | Partially Threaded |
| Grade Rating | grade_ 8 |
| Size | 4 inches |
| Compatible groove diameter | 0.38 Inches |
| Number of Pieces | 50 |
| UPC | 662520083361 |
| Global Trade Identification Number | 00662520083361 |
| Manufacturer | Red Head |
| Part Number | LDT-3840 |
| Item Weight | 5.55 pounds |
| Product Dimensions | 8 x 5 x 2.5 inches |
| Item model number | LDT-3840 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Measurement System | Imperial |
| Usage | Concrete |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | No Warranty |

## Images

![Red Head LDT-3840 Large Diameter Tapcon 3/8-Inch by 4-Inch Anchor (50 per Box) - Image 1](https://m.media-amazon.com/images/I/61OZ3+gI48L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Just what I needed
  

*by D***. on Reviewed in the United States on January 16, 2021*

I used these to attach a gazebo through deck boards into concrete footing.  Only finished a couple weeks ago.  Already have had some Santa Ana winds and the gazebo doesn't move at all.  The bolts felt very sturdy.  They took a bit of torque to screw them down with a foot long socket wrench.  But that made them fell very strong.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Easy to drive and set
  

*by M***E on Reviewed in the United States on January 21, 2022*

These work the best of several types of concrete fasteners I have been trying lately so I can recommend them to others.  They have large diameters compared to the size hole that needs to be drilled to screw them into place so that is a big plus.  They screw in easily and get a good "bite" to secure their position.  The smaller holes required helps speed up their use compared to the expanding end type of fastener AND they stay where you set them unlike the expanding end type.

### ⭐ 1.0 out of 5 stars







  
  
    My box of 50 only came with 29 anchors
  

*by D***P on Reviewed in the United States on March 12, 2023*

I needed these for a project, and when I got the box it was opened and there were only 29 of the 50 anchors inside. I had to use a few of them when I got them, so cannot return. Very disappointed

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-04-22*