U-Bolt M8 Carbon 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 | Carbon Steel |
| Grade | Grade 4.8 |
| Diameter | M8 |
| Surface Finish | Zinc Plated |
| 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 bolt
This is a bolt in Carbon Steel, at strength class Grade 4.8, supplied zinc plated, with an M8 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 bolt passes through the parts it joins and is closed with a nut, so the joint is held by the clamp load the tightened bolt develops rather than by the shank itself. Bolts of this type are used on structural steelwork, machine frames, brackets, flanges and pipework — anywhere the joint has to come apart again for maintenance.
Carbon steel is the workhorse material for structural fastening. Grade 8.8 and above must be coated (zinc, black oxide or Dacromet) or it will rust outdoors.
M8 is a metric thread with an 8 mm nominal diameter and a coarse pitch of 1.25 mm (ISO 261). A standard hex head takes a 13 mm spanner across the flats.
Is this not quite the size or grade you need? Ask us — we produce small batches to drawing and to DIN, ISO, GB and JIS standards, and we consolidate pallet and container loads for trade orders.
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