
Malleable black iron pipe fittingsBlack finish resists rustNational Pipe Threads for creating tighter seals than straight threadsFedSpecWW-P-471-B, ANSI B-1614 (Dimensions), ANSI B-21 (Pipe Threads), Ferrous Plugs, Bushings, and Locknuts, FedSpecWW-P-471-B,...
Malleable black iron pipe fittings
Black finish resists rust
National Pipe Threads for creating tighter seals than straight threads
Fed
Spec
WW-P-471-B, ANSI B-16
14 (Dimensions), ANSI B-2
1 (Pipe Threads), Ferrous Plugs, Bushings, and Locknuts, Fed
Spec
WW-P-471-B, ANSI B-16
14 (Dimensions), ANSI B-2
1 (Pipe Threads), Malleable Iron Unions (Class 150), Fed
Spec
WW-U-531C, ANSI B-16
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