Automotive fasteners designed for quick, tool-free adjustments in small assemblies, presented as Uxcell Thumb Screws. Handy when panels or brackets need frequent access, the pack saves time and avoids searching for a screwdriver. Are 15 metal, fully threaded knurled screws, M4 x 25mm with a 12mm head, the right choice for your workshop?
⚡ At a Glance
- • Grip & Adjustment: Knurled 12mm head enables secure finger grip for hand tightening, fully threaded M4 x 25mm shaft with 0.7mm pitch
- • Best for: Small assemblies, access panels and brackets that require frequent manual adjustments
- • Not ideal for: High-load structural joints or long-term outdoor use where specific corrosion resistance is required
Knurled-head thumb screws supplied as a 15-piece metal pack, M4 x 25mm thread with 0.7mm pitch. Total length 33mm, head diameter 12mm and finished in silver-blue.
Quick hand tightening - with knurled 12mm head
A textured knurled surface increases fingertip friction while the 12mm head diameter gives enough purchase for thumb and forefinger. Full threading along the 25mm shaft means the head can engage throughout the screw's usable length.
Rapid, tool-free adjustments make routine access tasks faster and neater. Panels and clamps can be released or secured without reaching for tools.
Reliable thread engagement - thanks to M4 thread with 0.7mm pitch
Metric M4 sizing paired with a 0.7mm thread pitch matches common tapped holes and inserts. Full threading ensures consistent contact along the shaft for secure fastening.
Consistent compatibility with standard M4 fittings reduces wobble and loosening risk during repeated use. Suitable for small mechanical connections and fixtures.
Ready supply for projects - with 15-piece metal pack
Package contains 15 knurled thumb screws, total weight around 100g, finished in a silver-blue tone and with an overall length of 33mm. The metal construction provides basic durability for interior automotive and workshop tasks.
Keeping multiple screws in a kit reduces downtime and ensures spares are available for repairs or installations. Ideal for workshops, hobbyists and maintenance tasks requiring several fastenings.
✨ The 4 Key Reasons for Uxcell Thumb Screws
- Knurled 12mm head - Tightens by hand quickly, ideal for frequent adjustments
- Fully threaded M4 x 25mm shaft - Ensures consistent engagement across installed depth
- Pack of 15 screws - Keeps spares for multiple projects and replacements on hand
- 0.7mm thread pitch - Matches standard metric M4 threads for reliable compatibility
📋 Technical Details at a Glance
- Thread Size: M4 x 25mm (D*L)
- Shaft Thread Length: Fully threaded along 25mm shaft
- Total Length: 33mm / 1.3"
- Thread Pitch: 0.7mm
- Head Type: Flat knurled head
❓ Frequently Asked Questions
Q: What is the exact thread size and pitch?
A: M4 x 25mm thread size with a 0.7mm thread pitch, suitable for standard M4 tapped holes and inserts.
Q: How many screws are included in the pack?
A: The pack contains 15 knurled thumb screws, supplied together as a single set.
Q: What material and finish do the screws have?
A: The screws are metal with a silver-blue finish; no specific alloy or coating is specified.
🏆 Our Verdict
Suitable for hobbyists, maintenance technicians and anyone who needs frequent, tool-free fastening in small assemblies. The combination of a knurled 12mm head, fully threaded M4 x 25mm shaft and a 15-piece pack makes the set practical for repeated access tasks. The pack represents straightforward value for workshops and projects that prioritise convenience and consistent thread compatibility.
