12 Pcs 1/4"-20 x 1 Thumb Screws, Star Knob Screws with Knurled Grip – Hand Tighten Clamping Knobs for Umbrella Base, Machinery, Furniture – Extra Long 1" Thread for Thick Materials
US$3.20
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US$3.20
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by awardsclub.co.uk
Free 30-day returns Details
Product details
| Management number | 250221060 | Release Date | 2026/09/17 | List Price | US$3.20 | Model Number | 250221060 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- 【Tool-Free Hand Tightening – No Wrench Needed】 – Tired of searching for the right wrench or hex key? Our star-shaped thumb screws allow secure hand tightening without any tools. The ergonomic star design provides excellent leverage – simply grip and twist for a firm hold. Will this work in tight spaces? Yes – the 25mm (0.98") knob gives you enough torque while remaining compact.
- 【Extra Long 1" Thread – Maximum Reach for Thick Materials】 – With a 1" (25mm) thread length, these thumb screws provide maximum reach for the thickest applications. Will this fit my umbrella base? Yes – 1/4"-20 is the standard thread size for most umbrella base set screws. The extra-long 1" thread ensures full engagement in thick workbench tops, heavy-duty equipment, and multi-layer assemblies where shorter screws (1/2", 5/8", or 3/4") won't reach.
- 【Durable Plastic Knob + Galvanized Steel Thread】 – The star-shaped knob is made of durable black plastic – lightweight, crack-free, and comfortable to grip. The threaded shank is crafted from galvanized carbon steel – wear-resistant and corrosion-resistant for long-lasting performance. This combination gives you a comfortable grip with metal thread strength.
- 【Precision 1/4"-20 Thread – Standard & Compatible】 – Thread size: 1/4"-20 UNC (standard coarse thread); Thread length: 1" (25mm) – ideal for thick umbrella bases, heavy-duty workbenches, and industrial equipment; Knob diameter: 25mm (0.98"); Knob thickness: 11mm (0.43"). Please verify your required thread length before ordering.
- 【12-Piece Set – Stock Your Workshop】 – Includes 12 thumb screws – enough for multiple projects, replacements, or keeping spares in your workshop. A cost-effective solution for DIY enthusiasts, mechanics, and furniture makers. Add to cart and enjoy hassle-free fastening today.
| ASIN | B0FDQXLCCL |
|---|---|
| Brand | RiseDirectly |
| Color | Black |
| Model | RD-ThumbScrews-9-77 |
| Set Name | 12 Pcs |
| Head Type | Star |
| Size Name | 1/4" X 1" |
| Metal Type | Carbon Steel |
| Part Number | RD-ThumbScrews-9-77-36-03 |
| Thread Size | 1/4 inch |
| Thread Type | Unc |
| Drive System | Internal Hex |
| Finish Types | Zinc Plated |
| Manufacturer | RiseDirectly-UK |
| Thread Class | standard |
| Thread Style | Right Hand |
| Fastener Size | 1/4 in x 1 in |
| Fastener Type | Thumb Screws |
| Item Diameter | 6.35 millimeters |
| Material Type | Carbon Steel |
| Exterior Finish | Zinc |
| Item Dimensions | 1.43 x 1 x 1 inches |
| Number Of Items | 12 |
| Thread Coverage | Partially Threaded |
| Number of Pieces | 12 |
| Outside Diameter | 6.35 millimeters |
| Screw Head Style | Knurled Head |
| Screw Point Style | Flat Point |
| Set Screw Thread Type | UNC |
| Compatible Groove Diameter | 0.25 inches |
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