AISI 317L Grade Nuts and Bolts

Product Details:

• SS 317L is a low-carbon, molybdenum-rich austenitic stainless steel offering higher corrosion resistance than SS 316/316L.

• Especially resistant to chlorides, sulfuric acid, phosphoric acid, and acidic chlorides.

• Low carbon content minimizes intergranular corrosion after welding.

• Supplied as hex bolts, stud bolts, threaded rods, nuts, and washers for critical service conditions.

• AISI / AISI Grade: 317L

• UNS: S31703

• ASTM: ASTM A193 Gr B8M (Class 1 / Class 2), ASTM A276, ASTM A479

• DIN / EN: DIN 1.4438 / EN 10088

• ISO: ISO 3506 – A4L

• Hex Bolts – Full thread / Half thread

• Stud Bolts with 2 Nuts

• Threaded Rods / Anchors

• Plain & Heavy Duty Washers

• Custom sizes as per drawing, BOQ, or project specification

• IS 2016 – Plain washers (normal & heavy series)

• IS 6649 – Spring lock washers

• DIN 125 – Flat washers

• DIN 9021 – Large OD / heavy washers

• DIN 127 – Spring washers

• ASME B18.21.1 – Flat washers & helical spring lock washers

(Heavy OD washers recommended for high-load and corrosive environments.)

• Chemical Process Plants – Reactors, heat exchangers, pipe supports

• Fertilizer & Acid Plants – Sulfuric & phosphoric acid handling systems

• Oil & Gas – Offshore platforms, refineries, skid packages

• Marine & Coastal Structures – High chloride exposure zones

• Power & Desalination Plants – High-temperature and corrosive service

• Superior pitting and crevice corrosion resistance

• Excellent strength and toughness at elevated temperatures

• Long service life with minimal maintenance in aggressive environments

1. Expertise in High-Corrosion Grades
   Proven manufacturing capability in SS 317L, 316L, Duplex, and high-nickel alloys for critical applications.

2. End-to-End Quality Control
   Raw material traceability, heat numbers, lot-wise inspection, dimensional and mechanical testing.

3. Customization & Project Support
   Fasteners supplied as per IS, DIN, ASME, ISO standards or customer drawings with reliable delivery.