Fittings
Square Head Pipe Plugs
Traditional square-drive pipe plugs.
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Square head plugs for wrench access in fouling service.
Manufactured to
Standards.
ASME B16.11Threaded fittings
The buyer’s guide
About our square head pipe plugs
Square head pipe plugs — the classic wrench-driven NPT plug, machined solid in every material. Every piece is machined or modified in our Houston shop with heat traceability end to end.
- External square drive
- NPT taper threads
- Solid machined construction
- Alloy, stainless and exotics
Tips for purchasing
- Give the size, rating and material — or the line spec — and we take it from there.
- Fittings ship with full material certs on request.
- Package fittings with the matching studs, nuts and gaskets — one PO, one source.
Available in
Materials.
A193 B7A193 B7MA540 B21–B24A193 B16A320 L7A320 L7MA320 L43A320 L7A/B/CA320 L70–L73A320 L1A193 B8 Class 1A193 B8 Class 2A193 B8M Class 1A193 B8M Class 2A320 B8 Class 1A320 B8 Class 2A320 B8M Class 1A320 B8M Class 2A320 B8F304 Stainless316 StainlessSAE Gr.5 / Gr.8A574Class 12.9F835F9124140434041424330V300M817M40 (EN24)F880F879F837F594 stainless nuts304L Stainless316L StainlessA193 B8T Class 1A193 B8T Class 2A320 B8T321 StainlessA193 B8C Class 1A193 B8C Class 2A320 B8C347 StainlessA193 B6410 Stainless416 Stainless17-4 PHF468 nonferrous boltsF467 nonferrous nutsInconel 718Inconel X-750Nimonic 80AInconel 725Incoloy 925Incoloy 825Incoloy 800H/HTMonel 400Monel K-500Duplex 2205Super Duplex 2507Zeron 100A193 B8RA193 B8SNitronic 50Nitronic 60A453 660
Representative capabilities — every item is manufactured or certified to your specification. Confirm requirements with our estimating team.
Applications
Process piping
Need it to a drawing? Need it tonight?
24/7 hot-shot manufacturing · 832-446-3442