BSL Stud & Nut Set (B7/2H), API 6A 5K to 20K Flange Bolting

The BSL Stud & Nut Set (B7/2H), API 6A 5K to 20K Flange Bolting is a bsl bolting set (Stud-and-nut set per flange — ASTM A193 B7 studs / A194 2H nuts) rated for 20,000 psi working pressure in standard service. Standard service rated for clean hydrocarbon, completion fluid, and water-cut streams.

Construction

• Type: BSL Bolting Set
• Series / class: N/A (20K)
• Configuration: Stud-and-nut set per flange — ASTM A193 B7 studs / A194 2H nuts
• End A: API 6A 5K, 10K, 15K, 20K flange bolting patterns
• Auxiliary: Sour-service variant: B7M / 2HM per NACE MR0175
• Bore / ID: N/A — bolting
• Length: Per flange schedule (varies by class and size)
• Material: A193 B7 studs / A194 2H nuts, hot-dip galvanised or PTFE coated
• Temperature rating: -50°F to 750°F

Available sizes

This product family covers the following stock or short-lead nominal sizes: Per API 6BX flange schedule — 2-1/16 in to 18-3/4 in flange sizes. Other sizes within the same series and pressure class can be sourced from the OEM mill on a build-to-order basis (8–14 weeks lead). Indus quotes a firm size, pressure class, configuration, and service-class match against your inquiry data sheet — call or RFQ with the line specification and we will return a complete matched bill of materials.

Performance

Working pressure 20,000 psi (20K class), standard rated. Manufactured to API 6A, material class AA. Hydrostatic test at 1.5× shell pressure on every unit. Mill test reports per EN 10204 3.1 / 3.2 supplied with each shipment.

Applications

• Wellhead flange make-up bolting
• Christmas-tree assembly hardware
• Surface-tree and BOP stack bolting

OEM equivalents and compatibility

This product is supplied as a recognised matched-pressure interchange for the following OEM standards and product lines (no implied authorised-distributor relationship — supplied by Indus Hydraulics):

• Galperti BSL
• Crane Lamons Bolting
• Cameron Bolting
• NOV Bolting

Compliance

• API 6A
• Material class: AA
• EN 10204 3.1 / 3.2 mill test reports
• Hydrostatic test certificates per unit

How to order

Confirm on your RFQ: (a) exact nominal size and bore ID, (b) line working pressure and pressure class, (c) end-connection style and gender on each port (M / F, NPT / BW / Integral / RTJ / RF), (d) service class — sour (NACE MR0175) or standard, (e) any additional ports or taps (1/2 in NPT instrument tap, 9/16 in Autoclave, etc.), and (f) required certifications beyond the standard MTR + hydrostatic. Indus quotes ex-Dubai with full traceability.

Companion products

Pair with matched-pressure hammer unions, swivel joints (Chiksan-style 50 / 100 / 200 series), pup joints, integral crosses / tees / elbows, plug valves, ball valves, and check valves of the same WECO figure class. For wellhead and frac-tree integration, also specify API 6A flanges, wellhead adapters, and ring-joint gaskets in the matched pressure class.