Bolting & Fasteners
Studs, Bolts & Washers
High-Tensile Flange Fasteners
Stud bolts, hex head bolts, heavy hex nuts, hardened washers for flanged piping connections. B7/2H carbon steel and B8/B8M stainless are our bread and butter, stocked to ASTM A193/A194. Exotic alloys (Inconel, Monel, Duplex, Super Duplex) are available on order, though lead times vary depending on size and grade.
Types & Variants
Stud Bolts
Continuous threaded or double-end studs to ASME B16.5 flange dimensions. Stocked in M16–M36 and ⅝″–1½″ sizes.
Hex Bolts & Nuts
Heavy hex bolts and nuts to ASTM A193/A194 and AS 1252 for structural and flanged connections.
Washers
Hardened flat washers to ASTM F436. Also: Nord-Lock, Belleville, and insulating washers.
Exotic Alloy Fasteners
Stud bolts and nuts in Inconel 625, Monel 400, Hastelloy C-276, Duplex 2205, and Titanium Grade 2.
Common Applications
Piping Flanges
Standard flange bolting for ASME B16.5 and AS 4087 flanged joints from Class 150 through Class 2500.
Pressure Vessels
Bolting for vessel heads, manways, and nozzle connections per AS 1210 and ASME VIII requirements.
Structural Connections
High-strength structural bolting for steel connections per AS 1252 / AS 4100.
Materials & Standards
Materials
- ASTM A193 B7 (chromium-molybdenum steel)
- ASTM A193 B8/B8M (304/316 stainless steel)
- ASTM A193 B16 (higher-temperature alloy steel)
- Inconel 625 (UNS N06625)
- Monel 400 (UNS N04400)
- Duplex 2205 (UNS S31803)
Standards
- ASTM A193/A194: Alloy steel and stainless steel bolting
- ASTM F436: Hardened steel washers
- ASME B16.5: Pipe flanges and flanged fittings
- AS 1252: High-strength bolting
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Electrical Isolation for Cathodic Protection
Complete flange isolation gasket sets with insulating sleeves and washers to prevent galvanic corrosion in pipeline systems.
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Shims
Precision Shim Stock & Packs
Precision shim stock in stainless steel, brass, plastic, and composite materials. Available in sheets, rolls, and pre-cut packs.
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Isolation Sleeves
Bolt Insulating Sleeves & Washers
Individual insulating bolt sleeves and washers in Mylar, HDPE, and Nomex for flange isolation and cathodic protection systems.
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Flange size, pressure class, material grade: with those three we can quote same day. Standard B7/2H ships from stock; exotics we source to order.
Request a QuoteDisclaimer
This page is provided for general engineering reference only and does not constitute professional advice, specification, or guarantee of performance. Actual results depend on specific application conditions. Universal Gaskets Pty Ltd accepts no responsibility or liability for decisions made based on this information. For full terms, see our Terms & Conditions.