M3 x 40mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £7.10 | £8.52 |
| 50 - 99 | £6.31 | £7.57 |
| 100 - 249 | £5.68 | £6.82 |
| 250 - 499 | £5.17 | £6.20 |
| 500 - 999 | £4.73 | £5.68 |
| 1000 + | £4.06 | £4.87 |
£8.52 / each
Product Specification
| Thread Size | M3 |
| Pitch | 0.50mm |
| Length | 40mm |
| Captive Diameter | 2.2mm |
| Threaded Length | 6.0mm |
| Drive | H2.5 |
| Head Diameter | 5.5mm |
| Head Height | 3.0mm |
| Material | A4 Stainless Steel |
| Standard | Similar to DIN 912 |
Frequently Bought Together
Total Price: £0.00
M3 x 40mm Captive Socket Cap Head Screw | Similar to DIN 912 | A4 Stainless Steel
This M3 x 40mm socket head captive screw is designed for transport equipment, inspection panels and removable covers where the fixing needs to remain attached after it has been loosened. The 6.0mm threaded length provides the fastening section while the reduced 2.2mm captive diameter is intended to work with a compatible panel, washer, sleeve or retaining feature. A4 Stainless Steel provides enhanced corrosion resistance for suitable outdoor, washdown, coastal and marine applications where a higher level of environmental resistance is required.
What Are Captive Socket Cap Head Screws?
Captive Socket Cap Head Screws are specialist fasteners designed to stay attached to a panel, cover or component after the threaded portion has been loosened. A reduced captive section works with a compatible panel, washer, sleeve or retaining feature so the screw can remain retained instead of falling free.
Common Applications
- Machinery Guards: Keeps compatible screws attached to removable guards during inspection, adjustment and maintenance.
- Control Cabinets: Retains panel fixings on electrical and automation enclosures that require repeated access.
- Equipment Covers: Supports serviceable covers where loose screws could be dropped inside machinery or misplaced.
- Maintenance Panels: Helps keep fastening hardware associated with access panels during routine servicing.
M3 x 40mm Captive Socket Cap Head Screw Dimensions
- Thread Size: M3
- Length: 40mm
- Threaded Length: 6.0mm
- Captive Diameter: 2.2mm
- Head Diameter: 5.5mm
- Head Height: 3.0mm
- Drive: H2.5
- Pitch: 0.50mm
- Standard: Similar to DIN 912
- Material: A4 Stainless Steel
Key Benefits
- Captive format can reduce dropped or misplaced fasteners during servicing when installed with a suitable retaining feature.
- 6.0mm threaded length provides the portion that engages the mating internal thread.
- 3.0mm head height provides the specified socket cap head profile.
- 0.50mm metric pitch matches the stated thread specification.
Compare more sizes in our Captive Socket Cap Head Screws range. If a cap head is not the right profile, see our full Captive Screws range where we also stock countersunk captive screw options. If you are unsure which length or captive diameter suits your panel, contact our team on 01233 713581.
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