One-Piece Industry Standard Clamping Coupling with or without Keyway

H2C-Series : Two-Piece Recessed Screw Clamping Collar


Recessed screw head provides an outside surface free of major projection for safety. Design fully engages the shaft without marring. Easily installed where major disassembly would otherwise be required. Greater axial holding power than set screw or one-piece clamping collars. Effective on hard and soft shafts.


Bore Sizes: 1/8" through 6"
Available in:
Stainless Steel
Steel-Black Oxide Finish


Download Catalog Page >> PDF Format


Black Oxide Steel T303 Stainless Steel Bore Size OD Width Clamp Screw Box Qty Weight* (Ounce)
H2C-012 H2C-012-S 1/8   13/16 1/4  4-40 20 0.48
H2C-018 H2C-018-S 3/16  13/16 1/4  4-40 20 0.44
H2C-025 H2C-025-S 1/4  13/16 1/4  4-40 20 0.42
H2C-031 H2C-031-S 5/16  13/16 1/4  4-40 20 0.40
H2C-037 H2C-037-S 3/8  1  1/16 5/16 6-32 20 0.89
H2C-043 H2C-043-S 7/16 1  1/16 5/16 6-32 20 0.83
H2C-050 H2C-050-S 1/2  1  1/4  3/8  8-32 20 1.45
H2C-056 H2C-056-S 9/16 1  1/4  3/8  8-32 20 1.41
H2C-062 H2C-062-S 5/8  1 1/2  13/32 10-32 20 2.20
H2C-068 H2C-068-S 11/16 1  1/2  13/32 10-32 20 2.10
H2C-075 H2C-075-S 3/4  1  3/4  1/2  1/4-28 20 3.60
H2C-081 H2C-081-S 13/16 1  3/4  1/2  1/4-28 20 3.50
H2C-087 H2C-087-S 7/8  1  7/8  1/2  1/4-28 20 4.10
H2C-093 H2C-093-S 15/16 1  7/8  1/2  1/4-28 20 3.90
H2C-100 H2C-100-S 1      2      1/2  1/4-28 20 4.50
H2C-106 H2C-106-S 1 1/16 2      1/2  1/4-28 10 4.30
H2C-112 H2C-112-S 1 1/8  2  1/8  1/2  1/4-28 10 5.00
H2C-118 H2C-118-S 1  3/16 2  1/8  1/2  1/4-28 10 4.70
H2C-125 H2C-125-S 1  1/4  2  1/4  1/2  1/4-28 10 5.30
H2C-131 H2C-131-S 1  5/16 2  1/4  1/2  1/4-28 10 5.00
H2C-137 H2C-137-S 1  3/8  2  3/8  1/2  1/4-28 10 5.80
H2C-143 H2C-143-S 1  7/16 2  3/8  1/2  1/4-28 10 5.50
H2C-150 H2C-150-S 1  1/2  2  1/2  1/2  1/4-28 10 6.20
H2C-156 H2C-156-S 1  9/16 2  1/2  1/2  1/4-28 10 5.80
H2C-162 H2C-162-S 1  5/8  3     5/8  5/16-24 10 12.50
H2C-168 H2C-168-S 1 11/16 3      5/8  5/16-24 5 12.10
H2C-175 H2C-175-S 1  3/4  3      5/8  5/16-24 5 11.50
H2C-187 H2C-187-S 1  7/8  3  1/4  5/8  5/16-24 5 13.80
H2C-193 H2C-193-S 1 15/16 3  1/4  5/8  5/16-24 5 13.40
H2C-200 H2C-200-S 2      3  1/4  5/8  5/16-24 5 12.70
H2C-212 H2C-212-S 2  1/8  3  1/2  5/8  5/16-24 5 15.00
H2C-218 H2C-218-S 2  3/16 3  1/2  5/8  5/16-24 5 14.60
H2C-225 H2C-225-S 2  1/4  3  1/2  5/8  5/16-24 5 14.00
H2C-237 H2C-237-S 2  3/8  3  1/2  5/8  5/16-24 5 13.40
H2C-243 H2C-243-S 2  7/16 4       3/4  3/8-24 5 12.90
H2C-250 H2C-250-S 2  1/2  4       3/4  3/8-24 5 22.80
H2C-262 H2C-262-S 2  5/8  4  1/4  3/4  3/8-24 5 26.60
H2C-268 H2C-268-S 2 11/16 4  1/4  3/4  3/8-24 5 26.00
H2C-275 H2C-275-S 2  3/4  4  1/4  3/4  3/8-24 5 25.10
H2C-287 H2C-287-S 2  7/8  4  1/2  3/4  3/8-24 5 29.00
H2C-293 H2C-293-S 2 15/16 4  1/2  3/4  3/8-24 5 28.00
H2C-300 H2C-300-S 3     4  1/2  3/4  3/8-24 5 26.60
H2C-318 H2C-318-S 3  3/16 4  1/2  7/8  3/8-24 5 28.30
H2C-325 H2C-325-S 3  1/4  4  1/2  7/8  3/8-24 5 27.30
H2C-337   3  3/8  4  3/4  7/8  3/8-24 5 29.00
H2C-343 H2C-343-S 3  7/16 4  3/4  7/8  3/8-24 5 31.00
H2C-350 H2C-350-S 3  1/2  4  3/4  7/8  3/8-24 5 29.10
H2C-375   3  3/4 5    7/8  3/8-24 5 32.00
H2C-393   3 15/16 5  1/4  7/8  3/8-24 5 35.00
H2C-400 H2C-400-S 4      5  1/4  7/8  3/8-24 5 33.00
H2C-425   4  1/4  5  1/2  7/8  3/8-24 5 35.00
H2C-443   4  7/16 5 3/4  7/8  3/8-24 5 38.50
H2C-450 H2C-450-S 4  1/2  5  3/4  7/8  3/8-24 5 36.00
H2C-493 H2C-493-S 4 15/16 6 1/4  7/8  3/8-24 5 42.50
H2C-500 H2C-500-S 5      6  1/4  7/8  3/8-24 5 40.10
H2C-525   5  1/4   6  3/4  7/8  3/8-24 5 42.00
H2C-550 H2C-550-S 5  1/2  6  3/4  7/8  3/8-24 5 43.30
H2C-593   5 15/16 7  1/4  7/8  3/8-24 1 50.30
H2C-600   6       7  1/4  7/8  3/8-24 1 47.60

DIMENSION - BORE, INCH
TOLERANCE +.003/-.000
* Weights as noted are approximate
H2C-318 through H2C-600 do not have recessed screws