---
product_id: 73131460
title: "CONFAST 1/4\" x 3-1/4\" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box)"
brand: "confast"
price: "AR$137759"
currency: ARS
in_stock: true
reviews_count: 13
category: "Confast"
url: https://www.desertcart.com.ar/products/73131460-confast-1-4-x-3-1-4-hex-head-concrete
store_origin: AR
region: Argentina
---

# Diamond point tip for effortless driving 1/4" diameter for heavy-duty hold Self-tapping threads for no pre-anchor needed CONFAST 1/4" x 3-1/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box)

**Brand:** confast
**Price:** AR$137759
**Availability:** ✅ In Stock

## Summary

> 🔧 Anchor your projects with confidence—built tough, driven smart.

## Quick Answers

- **What is this?** CONFAST 1/4" x 3-1/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) by confast
- **How much does it cost?** AR$137759 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/73131460-confast-1-4-x-3-1-4-hex-head-concrete)

## 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

- • **Bulk Pack Value:** 100-piece set delivers professional-grade quality at a fraction of premium brand prices
- • **Superior Holding Power:** Self-tapping carbon steel screws embed 1" minimum for rock-solid masonry anchoring
- • **All-Inclusive Drill Bit:** Each box includes a carbide-tipped bit optimized for perfect hole sizing—no guesswork, no extra cost
- • **Time-Saving Diamond Point:** Special tip design reduces driving effort and speeds up installation
- • **Precision-Engineered Hex Head:** Slotted hex head fits nut drivers for quick, secure fastening

## Overview

The CONFAST 1/4" x 3-1/4" Hex Head Concrete Screw Anchor is a professional-grade, self-tapping fastener designed for masonry, block, and brick. Made from durable carbon steel with a diamond point tip, it includes a precision carbide drill bit for optimal hole preparation. Its slotted hex head allows for easy driving with a nut driver, ensuring strong, reliable anchoring with minimal installation time. Sold in a 100-piece box, it offers exceptional value for contractors and DIY pros alike.

## Description

ApplicationsThe anchor is made from Carbon Steel, and is Blue. This anchor is designed for use in Concrete, Block, and Brick.EnvironmentThe anchor is designed for use in a Dry environment.Head Style The anchor is a Hex Washer head and is designed to allow the head to sit on top of the surface of the item being attached.Hole Diameter/Bit DiameterThe anchor requires a 3/16" 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.Driver RequiredA 5/16" nut driver is required for driving the anchor into the base material.Diameter of Anchor The diameter of the anchor is 1/4".Length Anchor The length of the anchor is 3-1/4"Thread LengthThe length of the threads on the anchor is 1-3/4" in length.Minimum EmbedmentThe minimum anchor embedment into the concrete is 1". Therefore, the anchor must be installed so that a minimum of 1" of the anchor is embedded into the concrete.Maximum Fixture ThicknessThe maximum fixture thickness or the maximum thickness of the material being fastened for a anchor is 1-3/4" to 2-1/4". This will ensure that the minimum embedment of 1" will be met.Fixture Hole DiameterThe hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 1/4" diameter anchor requires the hole in the fixture to be 5/16".Spacing between AnchorsEach anchor must be spaced a minimum distance of 4" from each other when measured center to center.Edge DistanceIt is very important not to install the anchor any closer than 3" from an unsupported edge of the concrete.

Review: Very sturdy concrete screw - I used this to repair a corner pop on my foundation. The original material was lost so I had to form a new one. I used this anchor screw to provide support for the new corner. I drilled into the old concrete, added in an epoxy for anchors, placed the screws tightly, let it dry, setup a form, then troweled in the new concrete. Repair looks good (professional even), and seems very stable (time will tell). To determine the correct size, you need to decide how deep the screw will be set. I wanted mine sticking out by 1.5 inch to act as rebar for the concrete, and drilled about 1.25 inches deep into the existing foundation, so I used 2.75 inch long screws. If anchoring other material, then consider it's width plus the depth you want the screw to be drilled. Be sure to use an anchor epoxy for a permanent fix. A note about drilling the holes for these screws: There are a LOT of drill bits advertised as good for concrete, they aren't. You need a fairly long bit (longer than the length of the screw to be set in the concrete) and it needs to be a REAL CONCRETE DRILL BIT - like the "Bosch BM5000 Fast Spiral Masonry Set". You must use the correct bit width or you can damage the concrete (if too narrow a bit) or the screw won't hold (if too wide a bit). Length is really difficult to get right if you are working in a confined area, so take that into account. If you have a wide open work area then you need to determine how deep you want to set the screw and be sure you have a slightly longer bit - put a piece of tape on it to show how far in to drill and when the tape aligns with the concrete you stop. If you have a really confined area like I did, you need to also determine how much extra bit you need to fit into the area to even reach the drill drill point (I could get the drill about 2 to 3 inches away from the drill hole and no closer). This means you have to add that much to the overall length of the bit for your project to work. Finding long enough masonry drill bits can be a real problem.
Review: Top quality @ 1/2 the price of name brand - A bargain price for 100 that also includes a solid masonary bit when compared to name brand prices and performed just as good. I bought extra bits and you can see I never opened the package. Bit took a beating without being changed while drilling over 48 holes into grout in between bricks in the columns that support my home. 4 of the holes that I drilled didnt tighten up but was easily remedied by using a larger 1/4" scew. Never snapped any heads off. Would by again. Very pleased.

## Features

- BIT INCLUDED IN EACH BOX-Proper bit equals improved holding values and reduced cost
- SLOTTED HEX HEAD-Can be driven with a nut driver
- SELF-TAPPING-Taps threads directly into masonry and requires no other anchor
- DIAMOND POINT-Easier to drive the screw to save time

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0725Q2KGW |
| Best Sellers Rank | #19,997 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #23 in Concrete Screws |
| Brand | CONFAST |
| Compatible groove diameter | 0.31 Inches |
| Date First Available | May 16, 2017 |
| Exterior Finish | Alloy Steel |
| Fastener Size | 1/4 |
| Fastener Type | self-tapping-taps |
| Head Style | Hex |
| Head Type | Hex |
| Item Diameter | 0.25 Inches |
| Item Weight | 1 pounds |
| Item model number | CSH14314 |
| Manufacturer | CONFAST |
| Material | Carbide, Carbon Steel |
| Metal Type | Carbon Steel |
| Number of Pieces | 100 |
| Point Style | diamond point-easier |
| Set Name | 100-Piece Set |
| Set Screw Thread Type | Self-Tapping |
| Size | 1/4" x 3-1/4" |
| Thread Class | Product-specific thread type |
| Thread Coverage | Partially Threaded |
| Thread Style | Partially Threaded, Special |
| Thread Type | Un |
| UPC | 820274000199 |

## Product Details

- **Exterior Finish:** Alloy Steel
- **Head Style:** Hex
- **Item dimensions L x W x H:** 1 x 1 x 1 inches
- **Material:** Carbide, Carbon Steel
- **Point Style:** diamond point-easier

## Images

![CONFAST 1/4" x 3-1/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) - Image 1](https://m.media-amazon.com/images/I/61sEhz5wCrL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very sturdy concrete screw
*by R***E on May 10, 2019*

I used this to repair a corner pop on my foundation. The original material was lost so I had to form a new one. I used this anchor screw to provide support for the new corner. I drilled into the old concrete, added in an epoxy for anchors, placed the screws tightly, let it dry, setup a form, then troweled in the new concrete. Repair looks good (professional even), and seems very stable (time will tell). To determine the correct size, you need to decide how deep the screw will be set. I wanted mine sticking out by 1.5 inch to act as rebar for the concrete, and drilled about 1.25 inches deep into the existing foundation, so I used 2.75 inch long screws. If anchoring other material, then consider it's width plus the depth you want the screw to be drilled. Be sure to use an anchor epoxy for a permanent fix. A note about drilling the holes for these screws: There are a LOT of drill bits advertised as good for concrete, they aren't. You need a fairly long bit (longer than the length of the screw to be set in the concrete) and it needs to be a REAL CONCRETE DRILL BIT - like the "Bosch BM5000 Fast Spiral Masonry Set". You must use the correct bit width or you can damage the concrete (if too narrow a bit) or the screw won't hold (if too wide a bit). Length is really difficult to get right if you are working in a confined area, so take that into account. If you have a wide open work area then you need to determine how deep you want to set the screw and be sure you have a slightly longer bit - put a piece of tape on it to show how far in to drill and when the tape aligns with the concrete you stop. If you have a really confined area like I did, you need to also determine how much extra bit you need to fit into the area to even reach the drill drill point (I could get the drill about 2 to 3 inches away from the drill hole and no closer). This means you have to add that much to the overall length of the bit for your project to work. Finding long enough masonry drill bits can be a real problem.

### ⭐⭐⭐⭐⭐ Top quality @ 1/2 the price of name brand
*by B***I on April 11, 2019*

A bargain price for 100 that also includes a solid masonary bit when compared to name brand prices and performed just as good. I bought extra bits and you can see I never opened the package. Bit took a beating without being changed while drilling over 48 holes into grout in between bricks in the columns that support my home. 4 of the holes that I drilled didnt tighten up but was easily remedied by using a larger 1/4" scew. Never snapped any heads off. Would by again. Very pleased.

### ⭐⭐⭐⭐ Of course, a good hammer drill helps too.
*by A***R on August 11, 2024*

I don’t know how any screw bites into concrete, but these do it. The key seems to be pre-drilling with a bit one size smaller than the screw’s diameter. With a 1/4 inch concrete screw that would be a 3/16 inch concrete drill bit, and so on.

## Frequently Bought Together

- CONFAST 1/4" x 3-1/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box)
- Sabre Tools 10-Pack SDS Plus 3/16" x 6" Rotary Hammer Drill Bits, Carbide Tipped for Brick, Stone and Concrete
- BOSCH HC2011B5 5-Pack 3/16 in. x 4 in. x 6 in. Bulldog SDS-Plus Rotary Hammer Bit

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-04*