Product Description
M3 A2 Stainless Steel Socket Grub Screws
These M3 socket grub screws are manufactured from A2 stainless steel and feature a cup point for secure, headless fastening. They are suitable for retaining components such as collars, gears, pulleys, handles and knobs on shafts.
The internal hexagonal socket allows the screw to be installed flush with or below the surrounding surface. Its cup point concentrates pressure around the edge of the contact area, helping the screw resist movement once tightened.
Key features
- M3 metric coarse thread
- A2 stainless steel construction
- Internal hexagon socket drive
- Cup point for secure component retention
- Headless design for flush or recessed installation
- Suitable for indoor and general outdoor applications
- Available in individual quantities and larger pack sizes
Typical applications
- Securing gears and pulleys to shafts
- Retaining collars, knobs and handles
- Machinery and equipment assembly
- Automotive and engineering projects
- Fixtures where a projecting screw head is undesirable
A2 stainless steel provides good resistance to corrosion in normal indoor and outdoor environments. For marine, coastal or chemically aggressive conditions, an A4 stainless steel fastener may be more appropriate.
Please note: Dimensions and specifications are provided as a guide. If a particular standard, material property class or dimensional tolerance is critical to your application, please confirm suitability before ordering.

| A | B | C | D |
| 3mm | 10mm | 1.5mm | 0.5 |
| 3mm | 3mm | 1.5mm | 0.5 |
| 3mm | 6mm | 1.5mm | 0.5 |
| 3mm | 8mm | 1.5mm | 0.5 |
| 3mm | 5mm | 1.5mm | 0.5 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.