---
product_id: 186331471
title: "CONFAST LDC383 3/8\" x 3\" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box)"
brand: "confast"
price: "$124.50"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/186331471-confast-ldc383-3-8-x-3-zinc-plated-large-diameter
store_origin: US
region: United States of America
---

# 3" length 25 screws per box 3/8" diameter CONFAST LDC383 3/8" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box)

**Brand:** confast
**Price:** $124.50
**Availability:** ✅ In Stock

## Summary

> 🔧 Screw it, install it, own it!

## Quick Answers

- **What is this?** CONFAST LDC383 3/8" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box) by confast
- **How much does it cost?** $124.50 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/186331471-confast-ldc383-3-8-x-3-zinc-plated-large-diameter)

## Best For

- confast enthusiasts

## Why This Product

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

## Key Features

- • **🛡️ Secure Fit:** Serrated hex washer head prevents back-out for lasting stability.
- • **🔗 One-Piece Wonder:** No assembly required; ready to install right out of the box.
- • **⚙️ Low Torque Design:** Experience easy installation with low torque threads.
- • **🔨 Effortless Installation:** Cuts its own threads into concrete for a seamless fit.
- • **🛠️ Standard Bit Compatibility:** Use a standard bit size that matches the anchor diameter.

## Overview

The CONFAST LDC383 is a high-performance concrete screw designed for anchoring to masonry, brick, or block. With a 3/8" diameter and 3" length, this zinc-plated screw comes in a box of 25, featuring a low torque thread design for easy installation and a serrated hex washer head to ensure a secure fit.

## Description

CONFAST LDC383 3/8" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box)

## Features

- WILL CUT ITS OWN THREAD INTO CONCRETE - When inserted in to properly drilled hole
- LOW TORQUE THREADS - easy installation
- SERRATED HEX WASHER HEAD - Prevents back-out
- SINGLE PIECE DESIGN - No assembly required; ready to install
- USE A STANDARD BIT - bit size is the same as the anchor diameter

## Product Details

- **Material:** Carbon Steel
- **Drive System:** External Hex
- **Head Style:** Hex
- **Exterior Finish:** Zinc,Steel
- **Point Style:** Hex Washer Serrated

## Images

![CONFAST LDC383 3/8" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box) - Image 1](https://m.media-amazon.com/images/I/514uqznHqGL.jpg)

## Available Options

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

## Questions & Answers

**Q: how many are in the package?**
A: 25 per box, clearly stated in the heading!

**Q: They say dry enviornment? Can these be used to secure a gazebo to a concrete pad?**
A: I would say yes because it's not constantly wet. If the concrete is wet most of the time it can get flaky and not hold tight.

**Q: Can this be used to attach an a/c mini-split wall mount brackets to stucco?**
A: These are perfect for any cement or stucco surface.

**Q: what size bosch concrete SDS drill bit is needed to use with these concrete screws?**
A: 3/8 inch drill size.  The bolt shaft is a hair under 3/8 inch an the thread diameter is about 7/16ths  You will need a 3/8 inch ratchet wrench to torque these in.  I used a power driver and snapped the adapter bit.  The holding power is amazing.

## Frequently Bought Together

- CONFAST LDC383 3/8" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (25 per Box)
- BOSCH HC2061 3/8 in. x 4 in. x 6 in. Bulldog SDS-Plus Rotary Hammer Bit
- Wensilon 1/4" x 3" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block (30 pcs)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-19*