Fully Threaded Rod M8x40 A3 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 | A3 Carbon Steel |
| Grade | Grade 4.8 |
| Diameter | M8 |
| Length | 40 mm |
| Thread | Metric |
| Surface Finish | Colour 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 fastener
This is a fastener in A3 Carbon Steel, at strength class Grade 4.8, supplied colour zinc plated, with an M8 thread and a 40 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 fastener from our catalogue, held in stock in the material and grade shown on this page. Used for general engineering, maintenance and assembly work, and available in single pieces as well as full cartons.
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.
A3 is the older Chinese designation for general-purpose low-carbon steel, superseded by Q235 in current standards. Expect general-purpose, non-critical fastening.
There is no minimum order and no free-shipping threshold: buy one piece or a full container. Your order total is confirmed in the cart, before payment.

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