--- product_id: 105539060 title: "CONFAST 3/16\" 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: "β‚±5190" currency: PHP in_stock: true reviews_count: 13 category: "Confast" url: https://www.desertcart.ph/products/105539060-confast-3-16-x-3-1-4-hex-head-concrete store_origin: PH region: Philippines --- # Diamond point for effortless driving 3/16" diameter for precision fit Includes ANSI-standard carbide drill bit CONFAST 3/16" 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:** β‚±5190 **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 3/16" 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?** β‚±5190 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/105539060-confast-3-16-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 - β€’ **Hex Head Versatility:** Slotted hex washer head compatible with nut drivers for professional-grade fastening. - β€’ **Time-Saving Diamond Point:** Special diamond tip design ensures faster, smoother driving with less effort. - β€’ **All-in-One Installation Kit:** Each box includes a perfectly matched carbide drill bit to maximize holding power and reduce costs. - β€’ **Precision Engineered Strength:** 3/16" diameter anchors deliver reliable hold in concrete, block, and brick. - β€’ **Durable Blue Coated Carbon Steel:** Corrosion-resistant finish built to withstand dry environments and heavy-duty applications. ## Overview The CONFAST 3/16" x 3-1/4" Hex Head Concrete Screw Anchor is a premium carbon steel fastener designed for secure anchoring in concrete, block, and brick. Featuring a diamond point tip for easy driving, a slotted hex washer head for versatile installation, and an included ANSI-standard carbide drill bit, this 100-piece set ensures professional-grade strength and efficiency. Its blue corrosion-resistant coating and precise thread design make it ideal for dry environments and heavy-duty masonry applications. ## 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 5/32" 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 1/4" nut driver is required for driving the anchor into the base material.Diameter of Anchor The diameter of the anchor is 3/16".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 3/16" diameter anchor requires the hole in the fixture to be 1/4".Spacing between AnchorsEach anchor must be spaced a minimum distance of 3" from each other when measured center to center.Edge DistanceIt is very important not to install the anchor any closer than 2-1/4" 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: Just as good as high priced bits - Bought these 2 weeks before hurricane Ian hit because I had a bad feeling about hurricane season. Well unfortunately I was right and we were hit by hurricane Ian. On the day of the hurricane it made a turn toward Fort Myers and we needed these to put up our plywood. These all worked perfect and held through the storm. We only broke 1 screw off while mounting the plywood but that was my fault for not setting the clutch on my drill on the first bit. Every other screw went in like they should and came out the same. I highly recommend these anchors as they didn't let us down. All windows were protected. Too bad I can't say the same about our roof but these screws had nothing to do with that loss. ## 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 | B072343VFT | | Best Sellers Rank | #17,645 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #25 in Concrete Screws | | Brand | CONFAST | | Color | Blue | | Compatible Groove Diameter | 0.25 Inches | | Customer Reviews | 4.5 4.5 out of 5 stars (2,280) | | Drive System | External Hex | | Exterior Finish | Blue | | Fastener Size | 3/16" | | Fastener Type | Male | | Finish Types | Blue Coated | | Grade Rating | Standard | | Head Type | Hex | | Item Diameter | 0.19 Inches | | Item Dimensions | 1 x 1 x 1 inches | | Manufacturer | CONFAST | | Material Type | Carbon Steel - Blue Coated | | Maximum Shear Strength | 540 | | Metal Type | Carbon Steel | | Number of Pieces | 100 | | Part Number | CSH316314 | | Screw Head Style | Hex Washer | | Screw Point Style | diamond point-easier | | Set Name | Set of 100 | | Set Screw Thread Type | Unified National Coarse (UNC) | | Size Name | 3/16" x 3-1/4" | | Thread Class | Standard | | Thread Coverage | Partially Threaded | | Thread Size | 3/16 | | Thread Style | Unified National Coarse (UNC) | | Thread Type | High-low | | UPC | 820274000281 | | Unit Count | 100 Count | ## Product Details - **Exterior Finish:** Blue - **Head Style:** Hex Washer - **Item dimensions L x W x H:** 1 x 1 x 1 inches - **Material:** Carbon Steel - Blue Coated - **Thread Size:** 3/16 ## Images ![CONFAST 3/16" 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/617P1vcjyEL.jpg) ![CONFAST 3/16" x 3-1/4" 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/71mOpkjsODL.jpg) ![CONFAST 3/16" x 3-1/4" 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/71GOrK6BqNL.jpg) ![CONFAST 3/16" x 3-1/4" 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/712E9rCymYL.jpg) ![CONFAST 3/16" x 3-1/4" 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. ### ⭐⭐⭐⭐⭐ Just as good as high priced bits *by R***E on October 9, 2022* Bought these 2 weeks before hurricane Ian hit because I had a bad feeling about hurricane season. Well unfortunately I was right and we were hit by hurricane Ian. On the day of the hurricane it made a turn toward Fort Myers and we needed these to put up our plywood. These all worked perfect and held through the storm. We only broke 1 screw off while mounting the plywood but that was my fault for not setting the clutch on my drill on the first bit. Every other screw went in like they should and came out the same. I highly recommend these anchors as they didn't let us down. All windows were protected. Too bad I can't say the same about our roof but these screws had nothing to do with that loss. ### ⭐⭐⭐⭐ Overall good *by G***P on April 18, 2024* This is a good masonary screw. It works pretty well if you pre-drill the whole. The only negative I have is they break easily if over torqued. So, be careful when tightening! --- ## 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.ph/products/105539060-confast-3-16-x-3-1-4-hex-head-concrete](https://www.desertcart.ph/products/105539060-confast-3-16-x-3-1-4-hex-head-concrete) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-04-23*