One-Piece Industry Standard Clamping Coupling with or without Keyway

ISTC-Series : One-Piece Threaded Clamping Collar


Design fully engages the thread for secure locking.


Bore Sizes: 10-32 through 2-12
Available in:
Stainless Steel
Steel-Black Oxide Finish


Download Catalog Page >> PDF Format


Black Oxide Steel T303 Stainless Steel Bore Thread OD  Width Clamp Screw Box Qty Weight* (Ounce)
ISTC-010-32 ISTC-010-32-S 10-32 11/16 5/16 4-40 20 0.43
ISTC-025-20 ISTC-025-20-S 1/4-20 11/16 5/16 4-40 20 0.40
ISTC-025-28 ISTC-025-28-S 1/4-28 11/16 5/16 4-40 20 0.41
ISTC-031-18 ISTC-031-18-S 5/16-18 11/16 5/16 4-40 20 0.40
ISTC-031-24 ISTC-031-24-S 5/16-24 11/16 5/16 4-40 20 0.40
ISTC-037-16 ISTC-037-16-S 3/8-16 7/8 3/8 6-32 20 0.80
ISTC-037-24 ISTC-037-24-S 3/8-24 7/8 3/8 6-32 20 0.74
ISTC-043-14 ISTC-043-14-S 7/16-14 15/16 11/32 6-32 20 1.20
ISTC-043-20 ISTC-043-20-S 7/16-20 15/16 11/32 6-32 20 0.97
ISTC-050-13 ISTC-050-13-S 1/2-13 1  1/8 13/32 8-32 20 1.40
ISTC-050-20 ISTC-050-20-S 1/2-20 1  1/8 13/32 8-32 20 1.40
ISTC-062-11 ISTC-062-11-S 5/8-11 1  5/16 7/16 10-32  20 2.00
ISTC-062-18 ISTC-062-18-S 5/8-18 1  5/16 7/16 10-32 20 2.00
ISTC-075-10 ISTC-075-10-S 3/4-10 1  1/2 1/2 1/4-28 20 2.90
ISTC-075-16 ISTC-075-16-S 3/4-16 1  1/2 1/2 1/4-28 20 2.80
ISTC-087-09 ISTC-087-09-S 7/8-9 1  5/8 1/2 1/4-28 20 3.20
ISTC-087-14 ISTC-087-14-S 7/8-14 1  5/8 1/2 1/4-28 20 3.12
ISTC-100-08 ISTC-100-08-S 1-8 1  3/4 1/2 1/4-28 20 3.44
ISTC-100-12 ISTC-100-12-S 1-12 1  3/4 1/2 1/4-28 20 3.48
ISTC-100-14 ISTC-100-14-S 1-14 1  3/4 1/2 1/4-28 20 3.50
ISTC-112-07 ISTC-112-07-S 1 1/8-7 1  7/8 1/2 1/4-28 10 4.00
ISTC-112-12 ISTC-112-12-S 1 1/8-12 1  7/8 1/2 1/4-28 10 3.80
ISTC-125-07 ISTC-125-07-S 1 1/4-7 2  1/16 1/2 1/4-28  10 4.70
ISTC-125-12 ISTC-125-12-S 1 1/4-12 2  1/16 1/2 1/4-28 10 4.60
ISTC-137-06 ISTC-137-06-S 1 3/8-6 2  1/4 9/16 1/4-28 10 6.25
ISTC-137-12 ISTC-137-12-S 1 3/8-12 2  1/4 9/16 1/4-28 10 6.25
ISTC-150-06 ISTC-150-06-S 1 1/2-6 2  3/8 9/16 1/4-28 10 6.70
ISTC-150-12 ISTC-150-12-S 1 1/2-12 2  3/8 9/16 1/4-28 10 6.60
ISTC-175-16 ISTC-175-16-S 1 3/4-16 2  3/4 11/16 5/16-24 5 10.50
ISTC-200-12 ISTC-200-12-S 2-12 3 11/16 5/16-24 5 11.80

DIMENSION - BORE, INCH
TOLERANCE +.003/-.000
* Weights as noted are approximate
Bore thread sizes 1 3/4 -16 and 2-12 do not have a relief cut