B Couplings

Type 'B' Couplings
Chain Coupling Type B Used to join ends of the chain to form endless assemblies. May also be used with jump rings to attach parts such as sink stoppers and drain plugs. The size of the hole in the coupling makes it possible to form an adjustable loop at the end of the chain, which is ideal for damper controls, merchandise displays, and other applications. Also used as a connector for chain size #10 and larger. B Couplings Diagram
 'B' COUPLING SIZES
APPROX. HOLE SIZE LENGTH
(A)
DIAMETER
(B)
 #3 (used with #1, #2, & # 3 chain) .105" 3/8" 9/64"
 #6 (used with #6 chain) .128" 1/2" 3/16"
 #8 (used with #8 chain) .096" or .130" 31/64" 11/64"
 #10 (used with #10 chain) .190" 39/64" 13/64"
 #13 (used with #13 chain) .256" 47/64" 1/4"
 #15 (used with #15 chain) .290" 7/8" 23/64"
 #20 (used with #20 chain)
.320" 1" 1/2"
 #30 (used with #30 & #50 chain) .480" or .540" 1-1/12" 5/8"