NPT Threaded Weld Spud (Tank Outlet Boss) — Class 150 (304 & 316 Stainless Steel) — product view

NPT Threaded Weld Spud (Tank Outlet Boss) — Class 150 (304 & 316 Stainless Steel)

Female NPT threaded weld spud with a contoured weld base for adding a reinforced female-threaded nozzle to tanks, vessels, or pipe walls. Offered in Class 150 304 and 316 stainless steel covering 3/8" to 4".

Material options

304 / 316

Connection

Female NPT Thread × Contoured Vessel Weld Boss (Weld Spud)

Pressure class

Class 150

Nominal size range

3/8"–4" (series range)

Construction

Cast stainless steel flanged weld-boss spud body (Class 150)

Size

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Construction, Pressure Class & Material Grades

Designed with Female NPT Thread × Contoured Vessel Weld Boss (Weld Spud) geometry (Cast stainless steel flanged weld-boss spud body (Class 150)), this threaded stainless steel fitting joins mating tapered NPT pipe threads along metal-to-metal thread flanks. Manufactured as a 150 lb investment-cast stainless steel fitting series in 304 / 316 stainless steel.

Series Size Coverage & Thread Make-Up

Nominal pipe thread sizes span 3/8"–4" (series range) across the series; available size options and envelope dimensions vary by stainless steel grade. Verify mating NPT thread specifications and consult the dimensional table for the selected size row before ordering.

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NPT Threaded Pipe Cap — Class 150, 3000 & 6000 — product view

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Female-threaded NPT pipe cap for closing and sealing male-threaded stainless steel pipe ends. Offered across Class 150, Class 3000, and Class 6000 series in 304/304L and 316/316L stainless steel covering nominal pipe sizes from 1/8" to 6".

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NPT Threaded Coupling — Class 150 (304 & 316 Stainless Steel)

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Four-way 90° female-threaded NPT equal cross for orthogonal four-branch distribution and manifold junctions. Offered across Class 150 and Class 3000 series in 304/304L and 316/316L stainless steel from 1/8" to 3".

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A 45° female-threaded NPT elbow for changing the direction of a threaded stainless steel pipe run. Offered across Class 150, Class 3000, and Class 6000 series in 304/304L and 316/316L stainless steel from 1/8" to 6".

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NPT Forged Full Coupling — Class 3000 & 6000

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