Stud Bolts
Used in flanged joint assemblies.
View specificationsProduct Category 05
Fasteners
Industrial fasteners supplied alongside flange and piping requirements for complete assemblies.
Industry-standard reference information only. Omegha-specific stock, certification and mill test documentation must be confirmed for each enquiry.
Reference standards
- ASTM A193 / A193M — alloy and stainless steel bolting for high-temperature service
- ASTM A194 / A194M — carbon and alloy steel nuts for pressure vessels and piping
- ASME B18.2.1 / B18.2.2 — inch-series bolts and nuts
Common materials / grades
- ASTM A193 B7 — alloy steel bolting
- ASTM A193 B8 / B8M — stainless steel bolting
- ASTM A194 2H — carbon steel nuts
- ASTM A194 8 / 8M — stainless steel nuts
Typical size range
Commonly 3/8–4 in diameter; diameter, length, thread and nut pairing to be confirmed from the flange or equipment schedule.
Available product types
Bolts
General industrial bolting requirements.
View specificationsNuts
Matching nuts for bolting assemblies.
View specificationsWashers
Load distribution in bolted joints.
View specificationsBuying guide
How to specify fasteners
Bolting is selected from the flange class and facing so that the joint develops its intended load.
- Pair grades correctly — for example ASTM A193 B7 studs with A194 2H nuts
- Derive stud length from the flange standard, class and gasket type
- Use stainless bolting (B8 / B8M) where corrosion or temperature requires it
- State any coating requirement such as hot-dip galvanising or PTFE
Questions
Fasteners — FAQs
Which standards apply to fasteners?
ASTM A193 / A193M — alloy and stainless steel bolting for high-temperature service; ASTM A194 / A194M — carbon and alloy steel nuts for pressure vessels and piping; ASME B18.2.1 / B18.2.2 — inch-series bolts and nuts. The applicable standard and edition are confirmed per enquiry.
Which materials and grades can be quoted?
ASTM A193 B7 — alloy steel bolting; ASTM A193 B8 / B8M — stainless steel bolting; ASTM A194 2H — carbon steel nuts; ASTM A194 8 / 8M — stainless steel nuts. Availability of a specific grade is confirmed against your requirement.
What sizes are covered?
Commonly 3/8–4 in diameter; diameter, length, thread and nut pairing to be confirmed from the flange or equipment schedule.
Do you supply outside Kolkata?
Enquiries from across West Bengal and India are welcome; freight and delivery timelines are quoted against the destination and quantity.