Stainless Steel Hex Nut - 202, 304, 316 Grade, A2, A2-70
Hex nuts are six-sided (hexagonal) internally threaded fasteners used in conjunction with bolts, screws, studs, or threaded rods to secure two or more parts together. The hex shape allows easy tightening with wrenches or spanners.
Stainless Steel Hex Nut – Technical Specifications
| Property | Grade A2-70 | Grade A4-70 | Grade A4-80 |
| Tensile Strength | ≥ 700 MPa | ≥ 700 MPa | ≥ 800 MPa |
| Yield Strength | ≥ 450 MPa | ≥ 450 MPa | ≥ 600 MPa |
| Hardness (max) | 95 HRB | 95 HRB | 100 HRB |
| Elongation (%) | ≥ 0.6 d (min. 12%) | ≥ 0.6 d (min. 12%) | ≥ 0.6 d (min. 12%) |
- AISI 304 (A2) – General-purpose, corrosion-resistant
- AISI 316 (A4) – Marine-grade, superior corrosion resistance
- Duplex & Super Duplex – High strength and corrosion resistance
- Other grades: 410, 430 (for magnetic or special applications)
Dimensional Specifications (Metric - DIN 934 / ISO 4032)
| Nominal Size (M) | Width Across Flats (s) | Height (m) |
| M4 | 7.0 mm | 3.2 mm |
| M5 | 8.0 mm | 4.0 mm |
| M6 | 10.0 mm | 5.0 mm |
| M8 | 13.0 mm | 6.5 mm |
| M10 | 17.0 mm | 8.0 mm |
| M12 | 19.0 mm | 10.0 mm |
| M16 | 24.0 mm | 13.0 mm |
| M20 | 30.0 mm | 16.0 mm |
- Thread Type: Metric Coarse (standard), Metric Fine, UNF, UNC
- Thread Tolerance Class: 6H (internal), 6g (external)
- Right-hand thread (standard), Left-hand available on request
Hex nuts are six-sided fasteners with internal threads that are compatible with bolts and screws, resulting in a dependable and strong connection. These nuts have gained popularity in many different fields due to their user-friendly nature and ability to withstand high levels of torque. Additionally, types such as jam nuts and lock nuts provide varying degrees of protection and practicality.
Tensile Strength
≥700 MPa
Yield Strength
≥450 MPa
Elongation
≥ 0.6 d (min. 12%)
Hardness Max
95 HRB
Materials
Stainless Steel
- AISI 202
- AISI 304
- AISI 316
Steel Grade
- 8.8
- 10.9
- 12.9
Finishing
- Polished
- Geomet
- Dacromet
- Teflon
- Hot-Dip Galvanzing
- Zinc (Yellow, White, Blue)
- Black Qxide
Thread
- Metric
- BSW
- UNC
- UNF
Standards
- Din 931
- ISO 4014
- ASTM A325
- ASTM A490
- ASTM A307
- IS 1364
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