M4 x 16mm Captive Knurled Thumb Screw (~DIN 464) | A1 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £4.65 | £5.58 |
| 50 - 99 | £4.13 | £4.96 |
| 100 - 249 | £3.72 | £4.46 |
| 250 - 499 | £3.38 | £4.06 |
| 500 - 999 | £3.10 | £3.72 |
| 1000 + | £2.66 | £3.19 |
Product Specification
| Thread Size | M4 |
| Pitch | 0.70mm |
| Captive Diameter | 3.0mm |
| Thread Length | 16mm |
| Threaded Length | 8mm |
| Head Diameter | 16.35mm |
| Head Height | 9.5mm |
| Knurled Height | 3.5mm |
| Shank Diameter | 8.0mm |
| Material | A1 Stainless Steel |
| Standard | Similar to DIN 464 |
Frequently Bought Together
Total Price: £0.00
M4 x 16mm Captive Knurled Thumb Screw (~DIN 464) | A1 Stainless Steel | Vital Parts – THUM464CT-M4-16-A1
A practical choice for maintenance-friendly equipment, this M4 x 16mm Captive Knurled Thumb Screw (~DIN 464) | A1 Stainless Steel offers tool-free tightening for panels and components that need regular removal. It features a M4 thread with a 16mm thread length and 8mm threaded length, giving the screw a defined fixing depth while the 3.0mm captive diameter helps retain the component within suitable captive screw assemblies. The 16.35mm head diameter, 9.5mm head height and 3.5mm knurled height provide a secure finger grip for tightening, loosening and repositioning without standard driver tools.
Made from A1 Stainless Steel with a self-colour finish, this screw is suitable for engineering, manufacturing and equipment maintenance environments where corrosion resistance and clean stainless appearance are required. The design is Similar to DIN 464, making it a useful DIN 464-style option for machine guards, removable covers and inspection panels where a balanced reach and hand-adjustable head are required.
What Are Captive Knurled Thumb Screws?
A captive knurled thumb screw is used where a component needs to be secured and removed without reaching for a tool. The knurled head improves manual grip while the captive diameter supports retention when used with a compatible panel, washer or captive screw arrangement. This M4 x 16mm option is Similar to DIN 464 for DIN 464-style installations.
Applications and Key Industries
These DIN 464-style captive knurled thumb screws are used across the UK in applications where a secure fixing must remain easy to operate by hand. Common use cases include:
- Machine Building: Tool-free fastening for panels, guards and fabricated assemblies using a M4 fixing.
- Control Cabinets: Removable cover retention where the 3.0mm captive diameter can support compatible captive screw setups.
- Workshop Equipment: Repeat adjustment for fixtures and brackets where operators need quick hand access.
- Industrial Servicing: Reliable thumb screw fastening for components opened during inspection or routine maintenance.
Purchasers typically include design engineers, assembly technicians, MRO buyers and production teams who need dependable hand-adjustable stainless fasteners for serviceable assemblies.
Why Choose This Captive Knurled Thumb Screw?
For assemblies that benefit from a captive hand screw rather than a loose machine screw, this part provides a clear specification and a consistent grip profile. The metric thread, defined threaded length and knurled head geometry help simplify specification for engineering and purchasing teams.
Key Features
- Easy grip head: 3.5mm knurled height gives operators a tactile gripping surface for repeat adjustment.
- DIN 464-style format: Made to a similar DIN 464 layout for familiar thumb screw specification.
- Service-friendly fixing: Useful for covers and panels that need regular access during inspection or maintenance.
- Accurate SKU sizing: Specified as M4 x 16mm so purchasing teams can match the screw to the assembly.
Product Specifications
- Thread Size: M4
- Thread Length: 16mm
- Threaded Length: 8mm
- Captive Diameter: 3mm
- Head Diameter: 16.35mm
- Head Height: 9.5mm
- Knurled Height: 3.5mm
- Shank Diameter: 8mm
- Pitch: 0.70mm
- Standard: Similar to DIN 464
- Material: A1 Stainless Steel
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