--- product_id: 151235262 title: "(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg" brand: "fullerkreg" price: "€ 23.03" currency: EUR in_stock: true reviews_count: 13 category: "Fullerkreg" url: https://www.desertcart.hr/products/151235262-4-sets-3-8-16x4-stainless-steel-hex-head-screws store_origin: HR region: Croatia --- # 3/8" diameter, heavy-duty size Fully threaded for max grip 18-8 (304) stainless steel, corrosion-resistant (4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg **Brand:** fullerkreg **Price:** € 23.03 **Availability:** ✅ In Stock ## Summary > 🔩 Lock in strength, style, and reliability — don’t get left unscrewed! ## Quick Answers - **What is this?** (4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg by fullerkreg - **How much does it cost?** € 23.03 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/151235262-4-sets-3-8-16x4-stainless-steel-hex-head-screws) ## Best For - fullerkreg enthusiasts ## Why This Product - Trusted fullerkreg brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Secure Kit:** Includes nuts, flat & lock washers for a fail-proof assembly. - • **Precision Threading:** Fully threaded 16 TPI coarse threads ensure maximum hold and torque resistance. - • **Premium Stainless Steel:** 18-8 (304) grade resists rust and chemical wear, lasting longer. - • **Trusted Quality & Specs:** Meets ASME standards with polished finish and Grade 8 hardness for professional reliability. - • **Industrial Strength Fastening:** Robust 3/8" hex head bolts built for heavy-duty projects. ## Overview This set of four 3/8-16x4 stainless steel hex head bolts by Fullerkreg offers fully threaded shafts for maximum fastening security. Crafted from durable 18-8 (304) stainless steel, these bolts resist corrosion and meet ASME dimensional standards. Each set includes matching hex nuts, flat washers, and lock washers, making it a complete, professional-grade fastening solution ideal for heavy-duty industrial and DIY applications. ## Description Product description What Are Hexagon Bolts? A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners. Full Thread Hexagon Bolts As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together. Materials Fullerkreg’s Hexagon Bolts are available in an array of materials, including A2, A4, and A4-80 Stainless Steel. This Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers are made of 18-8 (304) S/S Sizing Imperial Full Thread Hexagon Bolts are available in thread sizes of between No. 4 and 1 inch. Lengths are available between 1/4 inch and 12 inch. Hex Head Screws Bolts, Nuts, Flat & Lock Washers Package includes each of bolts, hex nuts , Flat & Lock washers 3/8-16x4" Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg 3/8-16x4" Stainless Steel Hex Head Screws Bolts Description 3/8-16 Thread Size (T) ANSI B18.6.3 Manufacturing Standard 4 inch Length (L) Yes Fully Threaded 16 TPI Pitch 0.243 inch Head Length (K) 0.562 inch Head Width A/F (H) Self Colour Finish +/- 0.13mm General Tolerance Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Screws that meet ASME or ISO (formerly DIN) specifications comply with these dimensional standards. Package includes each set of bolts, hex nuts & washers. It is our mission to help you with your projects. We want to reduce your frustration, save you time, cut your gasoline and aspirin expense, and provide quality bolts and screws THE FULLERKREG BOLTS BIO Fullerkreg Bolts is is a Twelve and a half year old, steadily growing operation based in Kunshan. We like stainless steel, we know that stainless steel fasteners are more expensive than other parts made of other materials, but we think it is worth it. We are always looking for fasteners for our ships, bicycles, cars and woodworking machines.When we finally found what we needed, we started buying 100 cases of fasteners.This practice began to accumulate additional inventory of fasteners. Soon, friends on the pier and nearby began coming to us instead of to the local shops. Our first online store offers a set of stainless steel set screws for ShopSmith woodworking machinery.This is our fifth year selling fasteners here. Review: Solid replacement hardware, just be ready to cut stainless - Picked these up to replace the threaded rod hardware on my doubles and they worked great. Fit and function were exactly what I needed—no issues once installed. One thing to keep in mind: you’ll probably need to cut them down to size, and since they’re stainless, they’re pretty tough. Took me a minute or two with a grinder to get through them. Overall, solid hardware and did the job perfectly. Review: Quality Parts at a Good Price - Very impressed with this hardware. Used these to fasten together some end-of-driveway curb ramps also bought on desertcart. These parts seemed well made and were all in spec. ## Features - A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners. - As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together. - Made from 18-8 stainless steel, FullerkregⓇ brand screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. - Screws that meet ASME specifications comply with these dimensional standards.DIMENSIONS: Diameter: 3/8" | Length: 4" | Thread Type: 16 tpi Coarse Thread (Standard) - Package includes four each of bolts, hex nuts , Flat & Lock washers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07S7PNM4K | | Best Sellers Rank | #8,859 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #25 in Hex Bolts | | Brand | Fullerkreg | | Color | Plain | | Compatible Groove Diameter | 0.38 Inches | | Customer Reviews | 4.7 out of 5 stars 1,413 Reviews | | Drive System | External Hex | | Exterior Finish | Stainless Steel | | Fastener Size | 3/8" x 4" | | Fastener Type | Hexagon Bolt | | Finish Types | Polished | | Head Style | Hex | | Head Type | Hex | | Item Diameter | 0.38 Inches | | Item Dimensions | 1 x 1 x 1 inches | | Item Hardness | Grade 8 | | Manufacturer | Fullerdongluo | | Material | Stainless Steel | | Material Type | Stainless Steel | | Metal Type | Stainless Steel | | Model | 1 | | Number Of Items | 2 | | Number of Pieces | 4 | | Part Number | 1 | | Screw Head Style | Hex | | Set Name | 4 Sets | | Set Screw Thread Type | Unified National Coarse (UNC) | | Size Name | (4 Sets) 3/8x4" | | Thread Coverage | Fully Threaded | | Thread Size | 3/8"-16 | | Thread Style | Left Hand | | Thread Type | Fully Threaded | | UPC | 799862377039 | | Unit Count | 4.0 Count | ## Product Details - **Color:** Plain - **Exterior Finish:** Stainless Steel - **Head Style:** Hex - **Material:** Stainless Steel - **Thread Size:** 3/8"-16 ## Images ![(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 1](https://m.media-amazon.com/images/I/81XHEf9ORHL.jpg) ![(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 2](https://m.media-amazon.com/images/I/61qd8626DCL.jpg) ![(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 3](https://m.media-amazon.com/images/I/81tDXNcloNL.jpg) ![(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 4](https://m.media-amazon.com/images/I/81D7FZ9zxdL.jpg) ![(4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 5](https://m.media-amazon.com/images/I/71kSnxCpyLL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid replacement hardware, just be ready to cut stainless *by J***L on May 1, 2026* Picked these up to replace the threaded rod hardware on my doubles and they worked great. Fit and function were exactly what I needed—no issues once installed. One thing to keep in mind: you’ll probably need to cut them down to size, and since they’re stainless, they’re pretty tough. Took me a minute or two with a grinder to get through them. Overall, solid hardware and did the job perfectly. ### ⭐⭐⭐⭐⭐ Quality Parts at a Good Price *by J***. on January 7, 2026* Very impressed with this hardware. Used these to fasten together some end-of-driveway curb ramps also bought on Amazon. These parts seemed well made and were all in spec. ### ⭐⭐⭐⭐⭐ Withstands torque without presenting problems for me. *by C***F on October 10, 2025* Good quality and was perfectly suited for the task. ## Frequently Bought Together - (4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Pyle Car Driveway Curb Ramp - Heavy Duty Rubber Threshold Ramp - Also for Loading Dock, Garage, Sidewalk, Truck, Scooter, Bike, Motorcycle, Wheelchair Mobility & Other Vehicle - Pyle PCRBDR24 - Pyle Car Driveway Adjustable Curb Ramps - 3 Pack Heavy Duty Rubber Threshold Ramp Kit Set -For Loading Dock, Garage, Sidewalk, Truck, Scooter, Bike, Motorcycle & Wheelchair Mobility- PCRBDR23 --- ## 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.hr/products/151235262-4-sets-3-8-16x4-stainless-steel-hex-head-screws](https://www.desertcart.hr/products/151235262-4-sets-3-8-16x4-stainless-steel-hex-head-screws) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-21*