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Compared to set-screw couplings, clamp-on couplings provide superior holding power and torque capacity without damaging your shaft. Slide them onto your shaft and tighten the four socket-head cap screws to secure. Couplings with ANSI keyway give you a more secure hold and are especially good for alternating-motion applications. They have standard ANSI keyway dimensions.

Steel—Couplings are Grade 1215 steel. Cap screws are alloy steel. Type 303 Stainless Steel—Couplings are Type 303 stainless steel for excellent corrosion resistance. Cap screws are 18-8 stainless steel.
One-Piece Clamping Shaft Coupling with Keyway
Unit of Measure
1 

Item #

Shipping Length

Bore

2nd Bore

OD

Clamp Screw

Length

List Price

Unit of Measure

CSISCC-037-037-KW N/A 4 Inch N/A 3/8 in N/A 3/8 in N/A 0.8750 in N/A 6-32 N/A 1.375 in $47.45 N/A Each
CSISCC-050-050-KW N/A 4 Inch N/A 1/2 in N/A 1/2 in N/A 1 1/8 in N/A 8-32 N/A 1.7500 in $52.23 N/A Each
CSISCC-062-062-KW N/A 4 Inch N/A 5/8 in N/A 5/8 in N/A 1 5/16 in N/A 10-32 N/A 2.0000 in $63.49 N/A Each
CSISCC-075-075-KW N/A 4 Inch N/A 3/4 in N/A 3/4 in N/A 1.5000 in N/A 1/4-28 N/A 2.25 in $73.47 N/A Each
CSISCC-087-087-KW N/A 4 Inch N/A 7/8 in N/A 7/8 in N/A 1.6250 in N/A 1/4-28 N/A 2.5000 in $84.42 N/A Each
CSISCC-100-100-KW N/A 4 Inch N/A 1 in N/A 1 in N/A 1.7500 in N/A 1/4-28 N/A 3 in $82.65 N/A Each
CSISCC-112-112-KW N/A 4 Inch N/A 1 1/8 in N/A 1 1/8 in N/A 1.8750 in N/A 1/4-28 N/A 3 1/8 in $97.00 N/A Each
CSISCC-125-125-KW N/A 4 Inch N/A 1 1/4 in N/A 1 1/4 in N/A 2 1/16 in N/A 1/4-28 N/A 3 1/4 in $108.27 N/A Each
CSISCC-137-137-KW N/A 4 Inch N/A 1 3/8 in N/A 1 3/8 in N/A 2 1/4 in N/A 1/4-28 N/A 3.5 in $138.27 N/A Each
CSISCC-150-150-KW N/A 4 Inch N/A 1 1/2 in N/A 1 1/2 in N/A 2.6250 in N/A 5/16-24 N/A 3 7/8 in $132.71 N/A Each
CSISCC-175-175-KW N/A 4 Inch N/A 1 3/4 in N/A 1 3/4 in N/A 3 1/8 in N/A 5/16-24 N/A 4 1/2 in $227.95 N/A Each
CSISCC-200-200-KW N/A 4 Inch N/A 2 in N/A 2 in N/A 3 3/8 in N/A 5/16-24 N/A 4 7/8 in $271.04 N/A Each
Unit of Measure
1