Simfix
M6 X 40 Hexagon Head Set Screw 10 Pack DIN 933 A4-70 A4 Stainless Steel
- RRP
- £5.92
M6 x 40mm fully threaded hex bolt in A4 marine grade stainless steel, manufactured to DIN 933 at property class A4-70. The full-length thread makes it versatile for through-bolting and general M6 fastening across light engineering, joinery, and general fabrication. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
- RRP
- £5.92
M6 x 40mm fully threaded hex bolt in A4 marine grade stainless steel, manufactured to DIN 933 at property class A4-70. The full-length thread makes it versatile for through-bolting and general M6 fastening across light engineering, joinery, and general fabrication. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
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*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 style | Hexagon head set screw, fully threaded |
|---|---|
| Standard | DIN 933 |
| Material | A4 stainless steel (316) |
| Property class | A4-70 |
| Thread size | M6 |
| Thread pitch | 1.0 mm (coarse) |
| Length | 40 mm |
| Head type | Hex |
| Drive type | External hex (spanner) |
| Surface finish | Plain (no plating) |
| HS commodity code | 7318157590 |
| Recommended use | Marine |
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 4pm 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.
