Threaded Insert Nut M8x18 Zinc Alloy — stocked and shipped worldwide by SFX Fasteners. Available for single-piece retail orders — no minimum order — dispatched from our own warehouse within 24–48 hours.
Specifications
| Material | Zinc Alloy |
| Grade | Grade 4.8 |
| Diameter | M8 |
| Length | 18 mm |
| Surface Finish | Colour Zinc Plated |
| Variant | With Washer |
| Brand | SFX Fasteners |
Ordering & shipping
| Minimum order | No minimum — single pieces welcome |
| Pricing | Order totals are confirmed at checkout, before payment |
| Custom & dropship | Small batches to drawing · blind dropshipping on request |
| Dispatch | 24–48 hours for stock items |
| Shipping | Worldwide, calculated at checkout by weight and destination |
Need a specific size, grade or standard? Send us a quote request — we quote to drawing and to DIN / ANSI / GB / JIS standards.
About this thread insert
This is a thread insert in Zinc Alloy, at strength class Grade 4.8, supplied colour zinc plated, with an M8 thread and a 18 mm length. Every dimension is stated against the standard named above; where a tolerance class matters to your design, ask us and we will confirm it in writing before you order.
A thread insert repairs a stripped thread or reinforces a thread in a softer parent material, so a steel fastener can be used again and again in aluminium, plastic or castings. Used on castings, moulds, aluminium housings and any assembly that is dismantled often enough for the original thread to wear out.
Grade 4.8 is low-carbon steel at 400 MPa tensile / 320 MPa yield. Suitable for light-duty, non-critical joints and the cheapest option per piece.
Colour zinc plating is an electroplated finish with a yellow/olive passivate — the older, thicker-passivate version with better salt-spray life than clear zinc.
This line ships worldwide from our own warehouse. Express courier, air parcel and postal services are all offered at checkout, with a tracking number e-mailed as soon as the parcel is handed over.
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