M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel

Product code: HSC912CT-M3-18-A4
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M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
M3 x 18mm Cap Head Captive Screw (H2.5) (~DIN 912) | Marine Grade A4 Stainless Steel
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 49 £4.25 £5.10
50 - 99 £3.77 £4.53
100 - 249 £3.40 £4.08
250 - 499 £3.09 £3.71
500 - 999 £2.83 £3.40
1000 + £2.42 £2.91

£5.10 / each


Average production time 14 + days.
Vital Parts - Here to make bulk ordering easy.

Product Specification
Thread Size M3
Pitch 0.50mm
Length 18mm
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

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

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01233 713581


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M3 x 18mm Captive Socket Cap Head Screw | Similar to DIN 912 | A4 Stainless Steel

Designed for general engineering applications requiring retained fasteners, this M3 x 18mm stainless steel captive screw combines a socket cap head with a reduced captive section. Once installed with a suitable retaining feature, the screw can be loosened from its mating thread while remaining associated with the panel or component. 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?

Socket Head Captive Screws provide positive hex-key drive engagement together with a retained fastening format. They are commonly specified for machinery, enclosures and serviceable equipment where panels need to be removed or opened regularly without losing the fasteners.

Common Applications

  • Industrial Enclosures: Provides a retained fastening point for covers and doors on suitable equipment housings.
  • Instrumentation: Keeps small fastening hardware attached to precision panels, test equipment and technical housings.
  • Automation Equipment: Supports repeat-access panels on machinery, control systems and production equipment.
  • Transport Equipment: Provides retained fixings for suitable removable covers and inspection panels.

M3 x 18mm Captive Socket Cap Head Screw Dimensions

  • Thread Size: M3
  • Length: 18mm
  • 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.

Browse the complete Cap Head Captive Screw collection for alternative dimensions and materials. You can compare more retained fastening styles in our Captive Screws collection, including countersunk captive screws for flush-fitting panel applications. We can help you choose the correct option on 01233 713581.

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