General guidance for buyers and engineers. It is not a product specification. Final selection rests with the equipment or structure designer.
- 01 · Material grade
- SS 202, SS 304 and SS 316 differ in corrosion resistance. Grades available vary by product and are listed on each product page.
- 02 · Dimensions & standard
- Diameter, length, thread form (metric, BSW, UNC) and the governing DIN, ISO or IS standard must match the drawing and the mating parts.
- 03 · Loading
- Static, dynamic, shear and vibration loads determine the size, strength class and locking method. Load-bearing joints are designed by engineers.
- 04 · Corrosion exposure
- Indoor, outdoor, coastal, washdown and chemical environments call for different grades. Chlorides are a key factor when choosing between SS 304 and SS 316.
- 05 · Temperature
- Strength and behaviour change at elevated temperatures. High-temperature zones may need heat-resistant alloys rather than standard stainless items.
- 06 · Installation method
- Tightening method, lubrication (to limit galling), washers and the substrate (concrete, sheet metal, plastic) all affect joint performance.
- 07 · Dissimilar metals
- Stainless steel in contact with aluminium or carbon steel in wet conditions can drive galvanic corrosion. Isolation may be needed.
- 08 · Regulation & documentation
- Pressure, food-contact, medical, aerospace, defence and safety-critical applications need specific approvals, which must be confirmed before supply.