Stainless Steel Bolting Materials
Stainless steel fasteners offer excellent corrosion resistance, high strength, and durability. Our comprehensive range covers all major stainless steel grades for various applications.
Common Grades
304/304L (A2)
General purpose austenitic stainless steel with excellent corrosion resistance
316/316L (A4)
Marine grade with superior corrosion resistance due to molybdenum content
321 (A3)
Stabilized grade with titanium, excellent high temperature properties
347
Niobium stabilized for high temperature service
310/310S
High temperature oxidation resistance up to 1150°C
317/317L
Enhanced molybdenum for superior chemical resistance
Product Range
- Stainless Steel Stud Bolts
- Stainless Steel Hex Bolts & Screws
- Stainless Steel Socket Head Cap Screws
- Stainless Steel Nuts (Hex, Heavy Hex, Lock Nuts)
- Stainless Steel Washers (Flat, Spring, Lock)
- Stainless Steel U-Bolts
- Stainless Steel Threaded Rods
- Stainless Steel Machine Screws
Specifications & Standards
| Standard | Grade | Description |
|---|---|---|
| ASTM A193 | B8, B8M, B8C, B8T | Stainless steel bolts for high temperature service |
| ASTM A194 | 8, 8M, 8C, 8F, 8T | Stainless steel nuts |
| ASTM A320 | B8, B8M | Stainless steel bolts for low temperature service |
| ISO 3506-1 | A2, A4 | Stainless steel fasteners - Bolts, screws and studs |
| DIN 267 | Various | Mechanical properties of stainless steel fasteners |
Applications
Chemical Processing
Corrosion resistance in acidic and alkaline environments
Food & Beverage
Hygienic applications requiring clean materials
Marine & Offshore
Saltwater corrosion resistance
Pharmaceutical
Clean room and sterile environments
Material Properties
304 Stainless Steel: 18% Chromium, 8% Nickel - Excellent general purpose corrosion resistance
316 Stainless Steel: 16% Chromium, 10% Nickel, 2% Molybdenum - Superior resistance to chlorides and marine environments
Temperature Range: -200°C to 800°C depending on grade