--- product_id: 313306661 title: "FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count" brand: "fastenmaster" price: "2317.81 DT" currency: TND in_stock: true url: https://www.desertcart.tn/products/313306661-fastenmaster-fmhlgm412-250-headlok-heavy-duty-flathead-fastener-4-1 store_origin: TN region: Tunisia --- # 250-count bulk pack with free Spider Driver bit 4.5-inch heavy-duty length Stronger shear values than 3/8" lag screws FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count **Brand:** fastenmaster **Price:** 2317.81 DT **Availability:** ✅ In Stock ## Summary > 🔩 Fasten smarter, not harder—lock in strength and speed with HeadLOK! ## Quick Answers - **What is this?** FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count by fastenmaster - **How much does it cost?** 2317.81 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/313306661-fastenmaster-fmhlgm412-250-headlok-heavy-duty-flathead-fastener-4-1) ## Best For - fastenmaster enthusiasts ## Why This Product - Trusted fastenmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready to Go:** Includes a free Spider Driver bit in every package—everything you need to get started immediately. - • **Built to Last:** Corrosion-resistant finish ensures your work stands the test of time, ACQ approved for treated wood. - • **Cam-Out? Not Here!:** Patented Spider Drive design virtually eliminates cam-out for flawless fastening every time. - • **Unmatched Strength:** Nationally code-compliant with shear values surpassing standard lag screws for ultimate durability. - • **Effortless Installation:** No predrilling needed—zips right in to save you time on every project. ## Overview The FastenMaster FMHLGM412-250 HeadLOK is a 4.5-inch heavy-duty flathead fastener designed for professional-grade wood projects. It offers superior shear strength exceeding 3/8-inch lag screws, requires no predrilling, and features a patented Spider Drive to prevent cam-out. With corrosion resistance approved for treated wood and a free Spider Driver bit included, this 250-count pack delivers reliable, efficient fastening for long-lasting results. ## Description FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count ## Features - Nationally code compliant stronger design shear values than 3/8 inch lag screws - No predrilling--zips right in - Patented Spider Drive virtually eliminates cam-out - corrosion resistance for the life of the project; ACQ approved - Free Spider Driver bit in every package ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | FASTENMASTER | | Part number | OMG - 5667704 | | Item Weight | 4.54 Kilograms | | Product Dimensions | 24.13 x 19.05 x 25.4 cm; 4.54 kg | | Item model number | FMHLGM412-250 | | Size | 4 Inch - 1/2 Inch | | Color | Black | | Finish | black | | Material | Other | | Item Package Quantity | 1 | | Number Of Pieces | 250 | | Head Style | Flat | | Measurement System | Imperial | | Specific uses | wood | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Material:** Other - **Head style:** Flat - **Item dimensions L x W x H:** 24.1 x 19.1 x 25.4 centimeters - **Exterior finish:** Epoxy - **Point style:** Self-Drill Point ## Images ![FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count - Image 1](https://m.media-amazon.com/images/I/514x3m5GZqL.jpg) ![FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count - Image 2](https://m.media-amazon.com/images/I/61zZXR198tL.jpg) ![FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count - Image 3](https://m.media-amazon.com/images/I/71kUrFrXYKL.jpg) ![FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count - Image 4](https://m.media-amazon.com/images/I/61h9xz4ldDL.jpg) ![FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count - Image 5](https://m.media-amazon.com/images/I/61JmLPjc06L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: We need 10” do you sell those** A: Amazon: I'm supposed to know your products? **Q: What is the sheer force and bending psi specs for these?** A: Per their spec sheet, the bending yield is 187,300 PSI and the allowable faster strength 1215 lbf Tensile and 965 lbf Shear **Q: why do i have to buy such a large quantity ?? why can't i get the 8 inch flathead in a 50 count >???** A: I always have big projects going. I am going to use a lot of them. **Q: I have to put three 2x6 pressure treated together for a main beam in a crawl space under a house, will these fastners work or do you sugest another?** A: You will only need 3" deck screws or drywall screws to put the beam together. I would not use the head lock screw. Probably will be 3 2x6 put together. Stager your joints on the beam if your 2x6's are not long enough to span from baring to baring. ## Frequently Bought Together - FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count,Black - FastenMaster OMG-FMHLGM278-500, 2-7/8" - EAB Tool 96000 Spider Driver Bits, 3-Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/313306661-fastenmaster-fmhlgm412-250-headlok-heavy-duty-flathead-fastener-4-1](https://www.desertcart.tn/products/313306661-fastenmaster-fmhlgm412-250-headlok-heavy-duty-flathead-fastener-4-1) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-11-08*