We manufacture B8 and B8M stainless stud bolts in our Umm Al Quwain plant from certified 304 and 316 bar, thread-rolled full length and supplied with ASTM A194 Grade 8 / 8M heavy hex nuts. Class 1 (solution annealed) and Class 2 (strain hardened) are both available in ¼" to 3" and M12 to M64.
ASTM A193 B8 is austenitic stainless steel type 304 and B8M is type 316, the molybdenum-bearing grade with better resistance to chlorides and pitting. Class 1 studs are solution annealed for maximum corrosion resistance and high-temperature service; Class 2 are strain hardened for higher strength (up to 125 ksi tensile in small sizes). Stainless studs are used where carbon-steel B7 would corrode or contaminate the process.
Applications
- Seawater, desalination and marine piping
- Food, pharmaceutical and dairy process lines
- Chemical and chlorine service flanges
- Cryogenic and LNG connections
- Stainless steel pipework in water treatment
- Architectural and exposed structural fixings
Standards, grades & finishes
Studs to ASTM A193 / A193M Grade B8 or B8M, Class 1 or Class 2, threads UNC / 8UN Class 2A or metric 6g. Nuts to ASTM A194 Grade 8 / 8M with anti-galling lubricant applied on request. Washers in matching stainless. PMI (positive material identification) test available for every lot.
Anchor bolts, studs and plate washers are manufactured in our own ISO 9001:2015 plant in Emirates Modern Industrial Area, Umm Al Quwain, with calibrated in-house dimensional and thread inspection. Tensile, hardness and chemical testing is carried out by independent UAE-accredited laboratories, and EN 10204 3.1 certificates are issued with every batch. We supply across the GCC, MENA and Africa.