Simfix
M27 Nylon Insert Nut 5 Pack DIN 985 A4-80 A4 Stainless Steel
- RRP
- £29.17
This M27 nylon insert lock nut is manufactured to DIN 985 in A4 stainless steel (316 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject to vibration. Property class A4-80 indicates a minimum tensile strength of 800 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under vibration without damaging the bolt thread.
Typical applications
- Joints exposed to vibration or cyclic loading
- Machinery, pumps, and rotating equipment
- Vehicle, trailer, and marine assemblies
- Any fixing that must not shake loose
Available in packs of 5 to 25, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.
- RRP
- £29.17
This M27 nylon insert lock nut is manufactured to DIN 985 in A4 stainless steel (316 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject to vibration. Property class A4-80 indicates a minimum tensile strength of 800 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under vibration without damaging the bolt thread.
Typical applications
- Joints exposed to vibration or cyclic loading
- Machinery, pumps, and rotating equipment
- Vehicle, trailer, and marine assemblies
- Any fixing that must not shake loose
Available in packs of 5 to 25, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.
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M27 Nylon Insert Nut DIN 985 A4-80 A4 Stainless Steel
Total for selected
This M27 nylon insert lock nut is manufactured to DIN 985 in A4 stainless steel (316 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject to vibration. Property class A4-80 indicates a minimum tensile strength of 800 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under vibration without damaging the bolt thread.
Typical applications
- Joints exposed to vibration or cyclic loading
- Machinery, pumps, and rotating equipment
- Vehicle, trailer, and marine assemblies
- Any fixing that must not shake loose
Available in packs of 5 to 25, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.
*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 | Nyloc insert lock nut |
|---|---|
| Standard | DIN 985 |
| Material | A4 stainless steel (316) |
| Property class | A4-80 |
| Thread size | M27 |
| Thread pitch | 3.0 mm (coarse) |
| Surface finish | Plain (no plating) |
| 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 3:30pm Monday-Friday are typically dispatched the same working day and every order is tracked. Next-day delivery is free over £50, or £5.99 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.
