UN Wire Thread Insert 1/4-28 304 Stainless Steel — 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 | 304 Stainless Steel |
| Grade | A2-70 |
| Diameter | 1/4-28 |
| Thread | Imperial (US) |
| Surface Finish | Plain |
| 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 304 Stainless Steel, at strength class A2-70, supplied plain, with an 1/4-28 thread. 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.
A non-metric or special bore size. Confirm the thread form and tolerance with us before you specify it into a design.
Plain (self-colour) means no coating. On 304 and 316 stainless that is fine — the alloy passivates on its own. On carbon steel it will rust, so choose a coated option instead.
Sold by the piece, so one is a valid order. Stock lines leave our warehouse within 24–48 hours of cleared payment, and freight is calculated at checkout from the packed weight and the destination.
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