M4 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £1.18 | £1.41 |
| 50 - 99 | £1.02 | £1.23 |
| 100 - 249 | £0.90 | £1.08 |
| 250 - 499 | £0.78 | £0.94 |
| 500 - 999 | £0.72 | £0.87 |
| 1000 + | £0.66 | £0.79 |
£1.41 / each
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Product Specification
| Thread Size | M4 |
| Thread Length | 20mm |
| Pitch | 0.70mm |
| Head Diameter | 16mm |
| Head Height | 3.5mm |
| Standard | DIN 653 |
| Material | A1 Stainless Steel |
Frequently Bought Together
Total Price: £0.00
M4 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
Commonly specified for instrument housings and bench equipment, this M4 x 20mm A1 stainless thumb screw follows DIN 653 dimensions and uses a thin round knurled head for repeated manual adjustment. The 20mm thread provides general-purpose engagement for covers, brackets and compact assemblies and the A1 Stainless Steel body gives a clean technical finish for equipment that may be opened or repositioned frequently.
What Are Thin Knurled Thumb Screws?
DIN 653 screws are useful when a standard machine thread is needed together with a head designed for direct hand operation. Their low head profile helps conserve space around panels and instruments while the knurling gives a dependable gripping surface.
Common Applications
- Control Enclosures: Secures removable panels that need routine operator or maintenance access.
- Optical Equipment: Provides tool-free fastening for adjustable mounts and compact assemblies.
- Display Systems: Supports repeated assembly and dismantling of exhibition or demonstration hardware.
- Bench Instruments: Keeps service covers accessible without relying on a screwdriver.
M4 x 20mm Thin Knurled Thumb Screw Dimensions
- Thread Size: M4
- Thread Length: 20mm
- Pitch: 0.70mm
- Head Diameter: 16mm
- Head Height: 3.5mm
- Material: A1 Stainless Steel
- Standard: DIN 653
Key Benefits
- DIN 653 dimensions simplify selection for standardised assemblies
- Low-profile head is useful on visible panels where a discreet fixing is preferred
- 16mm knurled head diameter provides a positive hand grip
- 0.70mm metric pitch matches the uploaded M4 specification
Browse neighbouring sizes in the Thin Knurled Thumb Screw DIN 653 collection or compare other products within Knurled Fasteners. For help checking thread size, length or head dimensions, call 01233 713581.
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