Simfix

4 X 20 Split Pin 25 Pack ISO 1234 A2 Stainless Steel

SKU 94A204020-D
In stock
£8.20
Grade
A2 (304)A4 (316)
Pack size:
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This 4 x 20mm split pin is manufactured to ISO 1234 in A2 stainless steel (304 grade). ISO 1234 specifies a folded pin with two legs that pass through a drilled hole, for retaining castle nuts, clevis pins, and shafts. The legs are spread after fitting so the pin cannot back out, giving a positive mechanical lock that needs no thread and can be inspected at a glance.

Typical applications

  • Retaining castle nuts and slotted nuts
  • Securing clevis pins and shaft assemblies
  • Agricultural and plant machinery linkages
  • Any positive lock that must be visible on inspection

Available in packs of 25 to 200, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.
£8.20

This 4 x 20mm split pin is manufactured to ISO 1234 in A2 stainless steel (304 grade). ISO 1234 specifies a folded pin with two legs that pass through a drilled hole, for retaining castle nuts, clevis pins, and shafts. The legs are spread after fitting so the pin cannot back out, giving a positive mechanical lock that needs no thread and can be inspected at a glance.

Typical applications

  • Retaining castle nuts and slotted nuts
  • Securing clevis pins and shaft assemblies
  • Agricultural and plant machinery linkages
  • Any positive lock that must be visible on inspection

Available in packs of 25 to 200, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.
  • Split pin, ISO 1234, stainless steel
  • Split pin, ISO 1234, stainless steel
  • Split pin, ISO 1234, stainless steel
  • Simfix product label - 94A204020-D
  • Simfix product label - 94A204020-T
Split pin, ISO 1234, stainless steel
Split pin, ISO 1234, stainless steel
Split pin, ISO 1234, stainless steel
Simfix product label - 94A204020-D
Simfix product label - 94A204020-T
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Split pin, ISO 1234, stainless steel Split pin, ISO 1234, stainless steel Split pin, ISO 1234, stainless steel Simfix product label - 94A204020-D Simfix product label - 94A204020-T
Split pin, ISO 1234, stainless steel Split pin, ISO 1234, stainless steel Split pin, ISO 1234, stainless steel Simfix product label - 94A204020-D Simfix product label - 94A204020-T

This 4 x 20mm split pin is manufactured to ISO 1234 in A2 stainless steel (304 grade). ISO 1234 specifies a folded pin with two legs that pass through a drilled hole, for retaining castle nuts, clevis pins, and shafts. The legs are spread after fitting so the pin cannot back out, giving a positive mechanical lock that needs no thread and can be inspected at a glance.

Typical applications

  • Retaining castle nuts and slotted nuts
  • Securing clevis pins and shaft assemblies
  • Agricultural and plant machinery linkages
  • Any positive lock that must be visible on inspection

Available in packs of 25 to 200, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.

*Photos, diagrams and other images are for illustration only and may not show the exact item supplied. Simfix reserves the right to alter or replace any photo, diagram or image at any time at its sole discretion.

**Orders that cannot be split will be rounded up to the next full pack or box quantity.

Simfix reserves the right to change quantities, stock levels and prices at any time. We accept no liability for the accuracy of dimensional data, DIN/ISO references, technical data, customs tariff codes or EAN barcodes.

Fastener styleSplit pin
StandardISO 1234
MaterialA2 stainless steel (304)
Property classA2
Thread sizeM4
Length20 mm
Surface finishPlain (no plating)
Recommended useWorkshop

RoHS and REACH compliant.

How do I choose between A2 and A4 stainless steel?

A2 (304) stainless steel suits most indoor, outdoor and workshop jobs. Choose A4 (316) marine grade for coastal, marine, poolside or other chloride-rich environments.

How do I make sure I order the right size?

Check the size in the product title and the standard, material and dimensions in the Product Specification tab. In M8 x 30, M8 is the thread diameter and 30 is the length in millimetres. See our size guide if you need more help.

When will my order arrive?

Orders placed before 3:30pm Monday-Friday are typically dispatched the same working day and every order is tracked. Next-day delivery is free over £50, or £5.50 below that threshold. Full options are shown at checkout.

What if I order the wrong item?

Email contact@simfix.com within 30 days of delivery with your order number. We will help arrange a refund or replacement. See our refunds information for the full process.

Is checkout secure?

Yes. Checkout is protected by SSL encryption and payments are processed through Shopify's secure checkout and supported payment providers. Simfix does not store your full card details.

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  • No-Return Refunds