92 H.P. Almgren Drive, Agawam, MA 01001
1-800-593-2323 • collarsandcouplings.com
RC-25 n/a 0.251/0.253 3/4 1/2 10-32x3/16 3/16
RC-31 n/a 0.3135/0.3155 1 5/8 10-32x3/16 1/4
RC-37 n/a 0.376/0.378 1 3/4 1/4-20x3/16 1/4
RC-50 -K 0.501/0.503 1-1/2 1 1/4-20x1/4 3/8
RC-62 -K 0.626/0.628 2 1-1/4 5/16-18x5/16 1/2
RC-75 -K 0.751/0.753 2 1-1/2 5/16-18x3/8 1/2
RC-87 -K 0.876/0.878 2 1-3/4 3/8-16x3/8 1/2
RC-100 -K 1.001/1.003 3 2 3/8-16x3/8 3/4
RC-125 -K 1.251/1.253 4 2-1/4 3/8-16x3/8 1
RC-137 -K 1.376/1.378 4-1/2 2-1/2 3/8-16x3/8 1
RC-150 -K 1.501/1.503 4-1/2 2-1/2 3/8-16x3/8 1
+/-
0.010
+/-
0.010
B ODA SS C
Black Oxide
Steel
(A283grC)
no keyway
(no suffix)
Black Oxide
Steel
(A283grC)
with keyway
(add suffix)
Inch Rigid Set Screw Couplings
Part Number
Prefix
O.D.
A
SS
C
B
W
+.002
-.000
d
+.010
-.000