M4 x 30mm Cap Head Captive Screw (H3) (~DIN 912) | A2 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £4.53 | £5.43 |
| 50 - 99 | £4.03 | £4.83 |
| 100 - 249 | £3.62 | £4.34 |
| 250 - 499 | £3.29 | £3.95 |
| 500 - 999 | £3.02 | £3.62 |
| 1000 + | £2.58 | £3.10 |
£5.43 / each
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Product Specification
| Thread Size | M4 |
| Pitch | 0.70mm |
| Length | 30mm |
| Captive Diameter | 3.0mm |
| Threaded Length | 8.0mm |
| Drive | H3 |
| Head Diameter | 7.0mm |
| Head Height | 4.0mm |
| Material | A2 Stainless Steel |
| Standard | Similar to DIN 912 |
Frequently Bought Together
Total Price: £0.00
M4 x 30mm Captive Socket Cap Head Screw | Similar to DIN 912 | A2 Stainless Steel
This M4 x 30mm retained socket cap screw is designed for manufacturing equipment, jigs and maintenance panels where the fixing needs to remain attached after it has been loosened. The 8.0mm threaded length provides the fastening section while the reduced 3.0mm captive diameter is intended to work with a compatible panel, washer, sleeve or retaining feature. A2 Stainless Steel provides good corrosion resistance for general engineering, machinery, equipment and indoor or suitably protected external applications.
What Are Captive Socket Cap Head Screws?
Cap Head Captive Screws combine a DIN 912-style socket cap head with a reduced section intended for captive retention. They are useful on equipment that requires repeated access because the screw can remain with the removable part during servicing which reduces the chance of loose fixings being dropped or misplaced.
Common Applications
- Jigs and Fixtures: Keeps adjustment or access fasteners associated with suitable workshop fixtures and production tooling.
- Laboratory Equipment: Supports retained panel fixing on instruments and serviceable technical equipment.
- Fabricated Housings: Provides a captive fastening format for custom covers, guards and equipment enclosures.
- General Engineering: Useful where a screw needs to remain attached to the assembly after disengaging from its mating thread.
M4 x 30mm Captive Socket Cap Head Screw Dimensions
- Thread Size: M4
- Length: 30mm
- Threaded Length: 8.0mm
- Captive Diameter: 3.0mm
- Head Diameter: 7.0mm
- Head Height: 4.0mm
- Drive: H3
- Pitch: 0.70mm
- Standard: Similar to DIN 912
- Material: A2 Stainless Steel
Key Benefits
- M4 thread size with 30mm overall length provides the primary screw dimensions.
- 3.0mm captive diameter provides the reduced section used with a compatible retention feature.
- H3 hex socket drive provides positive engagement with a matching driver or key.
- Similar to DIN 912 describes the DIN 912-style dimensional format used for this captive screw.
See our wider Socket Cap Head Captive Screws range for other sizes and stainless steel grades. You can compare more retained fastening styles in our Captive Screws collection, including countersunk captive screws for flush-fitting panel applications. For product-selection support, speak with our team on 01233 713581.
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