Illustrative drawing. Actual product is confirmed to your specification at quotation.
Studs
High-Strength Studs
Heat-treated alloy studs such as ASTM A193 B7 (chromium-molybdenum steel) are used for pressure vessels, flanges and high-temperature service. B7M is a lower-hardness version used for sour service under NACE MR0175 / ISO 15156.
- B7 for general high strength
- B7M for sour service
- Low-temperature L7
Specifications
- Material
- Alloy steel (AISI 4140 / 4142)Alloy steel (low temperature)
- Grade / property class
- A193 B7A193 B7MA320 L7A354 BD10.912.9
- Thread
- UNC / UNF (imperial)Metric coarse (ISO 261)
- Finish / coating
- Plain / blackZinc platedHot-dip galvanisedFluoropolymer coated (on request)
- Size range
- M8–M12M14–M24M27–M48Above M48Imperial (inch)
- Standards
- ASTM A193 B7 / B7MASTM A320 L7ASTM A354 BDISO 898-1 10.9 / 12.9
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Refineries and petrochemical plants
- Power and boiler plants
- Pressure vessels and heat exchangers
- Valves and pumps
- Wind and heavy machinery
Related and complementary fasteners
Request a quote for High-Strength Studs
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of high-strength studs do you supply?
- We supply high-strength studs in M8–M12, M14–M24, M27–M48, Above M48, Imperial (inch) size bands and grades/classes including A193 B7, A193 B7M, A320 L7, A354 BD, 10.9, 12.9. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do high-strength studs follow?
- Common standards are ASTM A193 B7 / B7M, ASTM A320 L7, ASTM A354 BD, ISO 898-1 10.9 / 12.9. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.