---
product_id: 91522905
title: "CONFAST 3/8\" x 4\" Flat Sleeve Anchor Zinc Plated (50 per Box)"
brand: "confast"
price: "AR$325845"
currency: ARS
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.ar/products/91522905-confast-3-8-x-4-flat-sleeve-anchor-zinc-plated
store_origin: AR
region: Argentina
---

# 3/8" diameter precision fit 359° expansion for max grip All-steel heavy-duty build CONFAST 3/8" x 4" Flat Sleeve Anchor Zinc Plated (50 per Box)

**Brand:** confast
**Price:** AR$325845
**Availability:** ✅ In Stock

## Summary

> 🔧 Nail it right, every time — the anchor pros trust!

## Quick Answers

- **What is this?** CONFAST 3/8" x 4" Flat Sleeve Anchor Zinc Plated (50 per Box) by confast
- **How much does it cost?** AR$325845 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/91522905-confast-3-8-x-4-flat-sleeve-anchor-zinc-plated)

## 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

- • **360° Grip Power:** Innovative 359-degree expansion ensures rock-solid hold in diverse materials.
- • **Sleek Flush Finish:** Flat countersunk head prevents unsightly protrusions for a professional look.
- • **Universal Masonry Mastery:** Engineered for concrete, brick, block—versatility that fits every project.
- • **Ready-to-Install Efficiency:** Pre-assembled anchors save time—no fumbling with parts on site.
- • **Precision Fit, Zero Guesswork:** Anchor size matches hole size perfectly for flawless installation every time.

## Overview

The CONFAST 3/8" x 4" Flat Sleeve Anchor is a zinc-plated carbon steel fastener designed for dry environments and compatible with concrete, brick, and block. Featuring a 359-degree expansion mechanism, it delivers consistent holding power with a flat countersunk head for flush finishes. Pre-assembled for quick installation, this heavy-duty anchor requires a 3/8" hole and supports fixture thicknesses up to 2-3/4", making it a reliable choice for demanding masonry projects.

## Description

Applications The anchor is made from Carbon Steel, and is Zinc Plated. This anchor is designed for use in Concrete, Block, and Brick. Environment The anchor is designed for use in a Dry environment. Head Style The anchor is a Flat Countersunk head and is designed to prevent the head from protruding above the surface of the item being attached. Hole Diameter/Bit Diameter The anchor requires a 3/8" hole to be drilled in the base material (Concrete, Block, and Brick). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill. Diameter of Anchor The diameter of the anchor is 3/8". Length Anchor The length of the anchor is 4" Minimum Embedment The minimum anchor embedment into the concrete is 1-1/4". Therefore, the anchor must be installed so that a minimum of 1-1/4" of the anchor is embedded into the concrete. Maximum Fixture Thickness The maximum fixture thickness or the maximum thickness of the material being fastened for a anchor is 2-3/4". This will ensure that the minimum embedment of 1-1/4" will be met. Fixture Hole Diameter The hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 3/8" diameter anchor requires the hole in the fixture to be 1/2". Spacing between Anchors Each anchor must be spaced a minimum distance of 3-3/4" from each other when measured center to center. Edge Distance It is very important not to install the anchor any closer than 1-7/8" from an unsupported edge of the concrete.

## Features

- VERSATILE - Can be installed in a wide variety of masonry, solid concrete, brick or block
- 359 DEGREE EXPANSION - Provides consistent holding values in a wide range of base materials
- PRE-ASSEMBLED - Ready to install no separate parts required
- ALL STEEL PARTS - Heavy duty for the most demanding jobs
- ANCHOR SIZE EQUALS HOLE SIZE - Easy to remember correct hole size for best results

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B071JYTSMD |
| Best Sellers Rank | #225,625 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #30 in Sleeve Anchors |
| Brand | CONFAST |
| Color | Silver |
| Compatible Groove Diameter | 0.38 inches |
| Customer Reviews | 4.3 4.3 out of 5 stars (111) 4.3 out of 5 stars |
| Fastener Type | Solid |
| Finish Types | Zinc |
| Item Shape | Block |
| Manufacturer | CONFAST |
| Material Type | Carbon Steel Zinc Plated |
| Maximum Shear Strength | 3082 |
| Model | SAFP384 |
| Number Of Items | 50 |
| Number Of Pieces | 50 |
| Outside Diameter | 0.38 inches |
| Part Number | SAFP384 |
| Screw Head Style | Flat Countersunk |
| Set Name | 50-Piece |
| Size Name | 3/8" x 4" |
| Thread Size | 3/8"-18 |
| Upc | 820274001417 |

## Product Details

- **Brand:** CONFAST
- **Color:** Silver
- **Fastener Type:** Solid
- **Material:** Carbon Steel Zinc Plated
- **Size:** One Size

## Images

![CONFAST 3/8" x 4" Flat Sleeve Anchor Zinc Plated (50 per Box) - Image 1](https://m.media-amazon.com/images/I/61Q4XgeLFNL.jpg)
![CONFAST 3/8" x 4" Flat Sleeve Anchor Zinc Plated (50 per Box) - Image 2](https://m.media-amazon.com/images/I/71S7s3ddzNL.jpg)
![CONFAST 3/8" x 4" Flat Sleeve Anchor Zinc Plated (50 per Box) - Image 3](https://m.media-amazon.com/images/I/81Kor0O63iL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Misleading description
*by  on Reviewed in the United States January 18, 2021*

IMPORTANT: The Phillips head screw is also a sleeve (inner threads).The anchor is a sleeve around a stud that will stick out of your concrete.Given the picture and the description, I thought that the sleeve left in the concrete would be flush and receive a Phillips head screw.But, they appear to be good/high quality. Even though I found a different solution at my local hardware store, I am keeping them for possible future projects rather than return.

### ⭐⭐⭐⭐⭐ Perfect
*by  on Reviewed in the United States November 12, 2024*

Great anchors they did exactly what they were supposed to do

### ⭐⭐⭐⭐ Work fairly good for Furring Strips
*by  on Reviewed in the United States March 6, 2020*

I will have used approximately 500 of these to install 1 x 4 (pt) furring strips on my cement block home. They work pretty good. Where the blocks are solid (filled), I can use a 1/4" hammer drill bit, and sleeve anchors can be hammered in and tighten down perfectly. However, when the blocks are hollow (no cement filling), I have to use a 3/16" hammer drill bit very gently so as to not blow out the backwall of the block. This does make it harder to get the sleeve anchor in the wall, but if you use a larger bit, I found that they would simply turn inside the block and never flare out. It takes some trial and error, and every now and then, I had to install multiple anchors. Sometimes, I had to start flaring the anchor before fully sinking into the block, and gradually flare and work the anchor into the block cavity. This is not a problem of the sleeve anchor itself, although, I wish a smaller size was available. 2" is the smallest of this flat-head sleeve anchor that I have found anywhere. Overall great product for this application, but they require trial & error in cinderblock installation.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-10-25*