Stainless steel 316 countersunk socket (CSK Allen) bolt · All grades (A4-70, A4-80) · UAE stock
High-tensile stainless steel 316 countersunk (CSK) Allen bolt with a flat head and internal hex socket that sits flush with the surface. Supplied in the full range of classes — A4-70 and A4-80 — in 316 stainless steel to DIN 7991, for flush, high-strength precision fixing. The datasheet shows a representative A4-80 sample.
All grades 8.8, 10.9 & 12.9
Material test certificate on request
Ready inventory, UAE & GCC delivery
Project quantities at best price
A SS316 CSK Allen bolt (countersunk socket screw) is a high-tensile bolt with a flat, tapered head and an internal hex socket, driven with an Allen key so the head sits flush with the surface. It is supplied in the full range of classes — A4-70 and A4-80 — to DIN 7991; the material test certificate below shows a representative A4-80 sample with 1040 MPa tensile strength.
Hamza Fasteners supplies stainless steel 316 countersunk Allen bolts in all grades and sizes for machinery, tooling, moulds and any high-strength joint that must finish flush. A material test certificate (MTC) is available on request for any grade. Buy CSK socket cap screws at the best price in Dubai from a trusted stainless steel 316 fastener supplier serving the UAE, Saudi Arabia, Qatar, Kuwait, Oman and East Africa.
Chemical and mechanical properties for A4-80 stainless steel 316 countersunk Allen bolts, tested to DIN 7991. Full MTC issued with your order.
This datasheet shows one representative grade and size for reference only. The SS316 CSK Allen Bolt is supplied in the full range of sizes, lengths and grades — not a single option. Tell us what you need and we will confirm exact availability, grade, size and finish and price.
| Property | Result | Requirement |
|---|---|---|
| Tensile Strength (MPa) | 1040 | Min 1040 |
| Yield Strength (MPa) | 940 | Min 940 |
| Hardness (HRC) | 32–39 | 32–39 |
| Proof Load (MPa) | 830 | Min 830 |
| Product Type | CSK Allen Bolt (Countersunk Socket) |
|---|---|
| Class | A4-80 (High Tensile) |
| Standard | DIN 7991 |
| Finish | Stainless A4 (316) |
| Carbon (C) | 0.20 – 0.50 % |
| Manganese (Mn) | 0.30 – 1.50 % |
| Phosphorus (P) | ≤ 0.035 % |
| Sulphur (S) | ≤ 0.035 % |
| Boron (B) | ≤ 0.003 % |
Flush high-strength fixing
Dies & jigs
Flush finished joints
Compact flush fixing
Clean flush surfaces
Flush connections
Stocked in Deira, Dubai and delivered fast across the region. Wherever you are building, we supply in stock and project quantities.
Hamza Fasteners is a trusted SS316 CSK Allen bolt supplier in Dubai and across the United Arab Emirates — Abu Dhabi, Sharjah and Ajman — with regular export supply to Saudi Arabia (Riyadh, Jeddah, Dammam), Qatar (Doha), Kuwait City, Oman (Muscat) and key East and West African markets including Tanzania (Dar es Salaam), Kenya (Nairobi and Mombasa), Nigeria (Lagos) and Ethiopia (Addis Ababa). Looking for a "SS316 CSK Allen bolt supplier near me" or the best countersunk socket screw price in your city? Send us your size list for a same-day quote.
Share the size, length, grade and quantity. We will confirm stock and send a quick quote with the MTC and best price.
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