Fastener standard reference
Stainless Steel
Stainless Steel Hexagon Head Screw — Fully Threaded — DIN 933 / ISO 4017 / GB/T 5783
Stainless steel is the corrosion-resistant choice, graded as A2 or A4 under ISO 3506 and chosen when the fastener is exposed to moisture or the outdoors. A2 (typically 304) suits general outdoor and indoor-wet use; A4 (typically 316) adds resistance to chlorides and marine environments. Strength follows ISO 3506 (for example A2-70, A4-80) and is set mainly by cold working, so the classes differ from carbon-steel property classes. Outdoor structures, food and marine equipment, and anywhere a bare corrosion-resistant finish is preferred over a coating. A2 and A4 are largely non-magnetic and cost more than carbon steel. The table below is controlled selection guidance, not a claim that every listed grade is supplied. Confirm the exact material, grade and mechanical requirements in the quotation.
How to use this page
Standard identity before product choice.
- Standard
- Stainless Steel
- Category
- Hexagon Head Screw — Fully Threaded
- Data shown
- Controlled material and grade reference
This page does not claim that related standards are interchangeable. Confirm the exact execution standard, product dimensions, material and finish in the quotation.
Controlled dimensional reference
Recorded dimensions
| Reference grade / class | Reference standard | Reference tensile (MPa) | Reference yield (MPa) |
|---|---|---|---|
| A2-70 | ISO 3506 | - | - |
| A4-80 | ISO 3506 | - | - |
| A2-50 | ISO 3506 | - | - |
| A4-70 | ISO 3506 | - | - |
Use these rows as a selection reference. The supplier quotation remains the confirmation of the actual supply range.
Linked catalog
Products using Stainless Steel
Quote against the correct standard