--- product_id: 587304003 title: "Aifeier ET 4 Pcs 5/16-18 Female Thread Knob" brand: "aifeier et" price: "B/.29" currency: PAB in_stock: true reviews_count: 8 category: "Aifeier Et" url: https://www.desertcart.com.pa/products/587304003-aifeier-et-4-pcs-5-16-18-female-thread-knob store_origin: PA region: Panama --- # Ergonomic star-shaped grip 5/16"-18 female thread precision Durable nylon & stainless steel build Aifeier ET 4 Pcs 5/16-18 Female Thread Knob **Brand:** aifeier et **Price:** B/.29 **Availability:** ✅ In Stock ## Summary > ⭐ Tighten with confidence, grip with style! 🔩 ## Quick Answers - **What is this?** Aifeier ET 4 Pcs 5/16-18 Female Thread Knob by aifeier et - **How much does it cost?** B/.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/587304003-aifeier-et-4-pcs-5-16-18-female-thread-knob) ## Best For - aifeier et enthusiasts ## Why This Product - Trusted aifeier et brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Thread Fit:** Engineered with exact 5/16"-18 threading for seamless compatibility and secure fastening. - • **Ergonomic Star Design:** Star-shaped head ensures a comfortable, non-slip grip that prevents hand fatigue during repetitive use. - • **Value Pack Convenience:** Includes 4 robust knobs, ready to upgrade your workspace with professional-grade hardware. - • **Versatile Industrial Use:** Perfect for saws, drill presses, lathes, and fixtures—wherever reliable 5/16"-18 female threads are essential. - • **Premium Material Durability:** Crafted from high-quality nylon and stainless steel for superior toughness and long-lasting anti-aging performance. ## Overview The Aifeier ET 4 Pcs 5/16-18 Female Thread Knobs combine precision-engineered threading with an ergonomic star-shaped design, crafted from durable nylon and stainless steel. Ideal for industrial and DIY applications, these knobs deliver reliable, comfortable, and long-lasting performance in a convenient 4-pack. ## Description Aifeier ET 4 Pcs 5/16-18 Female Thread Knob | Black Nylon 5 Star Shaped Head Clamping Nuts Knob (ID 0.312"/7.938mm): desertcart.com: Industrial & Scientific Review: Well made. - Good quality, well made knobs. Worked well on a special project. Review: Good quality, but I got the wrong size - These were exactly what I wanted! Except they're too small for the Giant Bolt I have. I thought I knew how to measure it, obviously I didn't . But now I think I need 8 mm. ## Features - 【Size】Female thread specification: 5/16"-18, Thread diameter: 5/16 inch (0.312"/7.938mm), Teeth per inch: 18 teeth, Pitch: 0.056 in (approx. 1.41 mm); Head diameter: 1.57 inch (40mm); Total height: 0.61 inch (15.5mm). - 【Premium Material】T knobs made of high quality nylon and stainless steels, reliable, fine workmanship, good toughness, strong anti-aging ability, smooth and beautiful, long service life. - 【Good Design】Star-shaped design, accord to ergonomic, comfortable hand grip, non-slip without scratching hands. Deep threads, can be very stable tightening screws. - 【Application】Suitable for saws, drill press, lathes, fixture, feather board and fences, and other places where 5/16 inch-18 female thread is needed. - 【Package Included】4 x 5/16"-18 Star Knob Handle. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CK2S7K7Y | | Best Sellers Rank | #3,460 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Star Knobs | | Brand | Aifeier ET | | Color | Black | | Compatible Groove Diameter | 8 millimeters | | Customer Reviews | 4.6 out of 5 stars 598 Reviews | | Drive Style | Star | | Exterior Finish | Stainless Steel | | Fastener Type | Star | | Finish Types | Polished | | Grade Rating | Commercial | | Inside Thread Size | 5/16"-18 | | Item Diameter | 0.31 inches | | Item Dimensions | 1.57 x 1.57 x 0.59 inches | | Manufacturer | Aifeier ET | | Material | Nylon | | Material Type | Nylon | | Metal Type | Brass | | Number Of Items | 4 | | Number of Pieces | 4 | | Outside Diameter | 1.57 inches | | Part Number | KNOB-HANDLE-516-4P | | Screw Head Style | Star-shaped | | Set Name | 1 | | Size Name | 4 pcs 5/16"-18 | | Thread Class | Coarse | | Thread Coverage | Fully Threaded | | Thread Size | 5/16"-18 | | Thread Style | Right Hand | | Thread Type | Unified National Coarse | | Unit Count | 4 Count | ## Images ![Aifeier ET 4 Pcs 5/16-18 Female Thread Knob - Image 1](https://m.media-amazon.com/images/I/51L-sCSvnUL.jpg) ![Aifeier ET 4 Pcs 5/16-18 Female Thread Knob - Image 2](https://m.media-amazon.com/images/I/613FQg2oTCL.jpg) ![Aifeier ET 4 Pcs 5/16-18 Female Thread Knob - Image 3](https://m.media-amazon.com/images/I/61AjhbidmdL.jpg) ![Aifeier ET 4 Pcs 5/16-18 Female Thread Knob - Image 4](https://m.media-amazon.com/images/I/61lFKd5cNhL.jpg) ![Aifeier ET 4 Pcs 5/16-18 Female Thread Knob - Image 5](https://m.media-amazon.com/images/I/71Hfr01ThtL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well made. *by L***. on June 15, 2026* Good quality, well made knobs. Worked well on a special project. ### ⭐⭐⭐⭐⭐ Good quality, but I got the wrong size *by S***E on June 20, 2026* These were exactly what I wanted! Except they're too small for the Giant Bolt I have. I thought I knew how to measure it, obviously I didn't . But now I think I need 8 mm. ### ⭐⭐⭐⭐⭐ they work great *by B***R on April 15, 2026* I made a jig for my drill press and ordered these knobs for the adjustment bolts. They thread on to the 1/4-20 bolt nicely and they are just the right size to be out of the way when I'm using the jig. --- ## 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.com.pa/products/587304003-aifeier-et-4-pcs-5-16-18-female-thread-knob](https://www.desertcart.com.pa/products/587304003-aifeier-et-4-pcs-5-16-18-female-thread-knob) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-09-10*