--- product_id: 86477754 title: "CONFAST 1/4\" x 3-3/4\" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box)" brand: "confast" price: "€ 143.75" currency: EUR in_stock: true reviews_count: 13 category: "Confast" url: https://www.desertcart.be/products/86477754-confast-1-4-x-3-3-4-hex-head-concrete store_origin: BE region: Belgium --- # Hex head fits nut driver for quick install 1/4" diameter for heavy-duty hold Diamond point for effortless driving CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) **Brand:** confast **Price:** € 143.75 **Availability:** βœ… In Stock ## Summary > πŸ”© Anchor your projects with confidence β€” the pro’s choice for masonry mastery! ## Quick Answers - **What is this?** CONFAST 1/4" x 3-3/4" 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?** € 143.75 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/86477754-confast-1-4-x-3-3-4-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 - β€’ **All-Inclusive Kit:** Each box includes a perfectly matched carbide-tipped drill bit, eliminating guesswork and saving you time and money. - β€’ **Optimized for Masonry:** Designed for dry environments with ANSI-standard drill bit compatibility, ensuring maximum holding power and safety. - β€’ **Effortless Installation:** Self-tapping diamond point design cuts through concrete, block, or brick with less effort and faster results. - β€’ **Precision-Engineered Strength:** Carbon steel core with blue corrosion-resistant coating ensures long-lasting durability in masonry applications. - β€’ **Professional-Grade Reliability:** Slotted hex washer head allows for secure fastening with a nut driver, delivering a clean, flush finish every time. ## Overview The CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor set includes 100 carbon steel, blue-coated screws engineered for masonry, block, and brick fastening. Featuring a self-tapping diamond point and slotted hex washer head, these anchors come with a matched carbide-tipped drill bit for precise hole drilling. Designed for dry environments, they provide superior holding power with easy installation using a nut driver, making them ideal for professional and DIY concrete anchoring projects. ## 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 3-3/4"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 2-1/4" to 2-3/4". 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 | B072FGSFRX | | Best Sellers Rank | #16,729 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Concrete Screws | | Brand | CONFAST | | Color | Blue | | Compatible Groove Diameter | 0.31 Inches | | Customer Reviews | 4.5 out of 5 stars 2,281 Reviews | | Drive System | External Hex | | Exterior Finish | Alloy Steel | | Fastener Size | 3/16" | | Fastener Type | self-tapping-taps | | Head Style | Hex Washer | | Head Type | Hex | | Item Diameter | 0.25 Inches | | Item Dimensions | 1 x 1 x 1 inches | | Item dimensions L x W x H | 1 x 1 x 1 inches | | Manufacturer | CONFAST | | Material | Carbon Steel - Blue Coated | | Material Type | Carbon Steel - Blue Coated | | Metal Type | Carbon Steel | | Number Of Items | 100 | | Number of Pieces | 100 | | Outside Diameter | 0.25 Inches | | Part Number | CSH14334 | | Point Style | diamond point-easier | | Screw Head Style | Hex Washer | | Screw Point Style | diamond point-easier | | Set Name | CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Set (100 Pieces) | | Set Screw Thread Type | Type 17 Auger | | Size Name | 1/4" x 3-3/4" | | Thread Class | coarse | | Thread Coverage | Partially Threaded | | Thread Size | 1/4 inch | | Thread Style | Type 17 Auger | | Thread Type | Un | | UPC | 820274000205 | | Unit Count | 100 Count | ## Product Details - **Material:** Carbon Steel - Blue Coated - **Head Style:** Hex Washer - **Item dimensions L x W x H:** 1 x 1 x 1 inches - **Exterior Finish:** Alloy Steel - **Thread Size:** 1/4 inch ## Images ![CONFAST 1/4" x 3-3/4" 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/61nwI6cLWQL.jpg) ![CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) - Image 2](https://m.media-amazon.com/images/I/617sMUaG3pL.jpg) ![CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) - Image 3](https://m.media-amazon.com/images/I/61yelXf-t0L.jpg) ![CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) - Image 4](https://m.media-amazon.com/images/I/61AqEL0K08L.jpg) ![CONFAST 1/4" x 3-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box) - Image 5](https://m.media-amazon.com/images/I/71OakBF4tNL.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. ### ⭐⭐⭐⭐ Work as intended *by M***. on October 24, 2021* You won't find this length in a box store, which is why I purchased online. The plus is the screws work just as well as tapcon screws which depending on your concrete is mixed. If its soft it will strip out if torqued to much and if its really hard you might snap them while seating the head. I had decent success in fully cured foundation wall some I had to finish setting with my hammer but still has hold. Only real complaint is it should come with a couple bits mine worked good first 20 holes but got dull in hard concrete, good luck finding a bit this size. I had to put the boards up drill with shorter bit and remove to finish holes to get required depth. My advice see if they sell extra bits and buy a few more but good buy on the screws. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/86477754-confast-1-4-x-3-3-4-hex-head-concrete](https://www.desertcart.be/products/86477754-confast-1-4-x-3-3-4-hex-head-concrete) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-07*