One-Piece Industry Standard Clamping Coupling with or without Keyway

H1C-Series : One-Piece Recessed Screw Collar


Recessed screw head provides an outside surface free of major projections for safety. Design fully engages the shaft without marring. Greater axial holding power than set screw collars. Effective on hard and soft shafts.


Bore Sizes: 1/8" through 4"
Available in:
Stainless Steel, Aluminum,
Steel-Black Oxide Finish


Download Catalog Page >> PDF Format


Black Oxide Steel T303 Stainless Steel Aluminum Bore Size OD Width Clamp
 Screw		 Box Qty Weight* (Ounce)
H1C-012 H1C-012-S H1C-012-A 1/8   13/16 1/4  4-40 20 0.51
H1C-018 H1C-018-S H1C-018-A 3/16  13/16 1/4  4-40 20 0.50
H1C-025 H1C-025-S H1C-025-A 1/4   13/16 1/4  4-40 20 0.45
H1C-031 H1C-031-S H1C-031-A 5/16  13/16 1/4  4-40 20 0.43
H1C-037 H1C-037-S H1C-037-A 3/8  1  1/16 5/16 6-32 20 0.95
H1C-043 H1C-043-S H1C-043-A 7/16 1  1/16 5/16 6-32 20 0.92
H1C-050 H1C-050-S H1C-050-A 1/2  1  1/4  3/8  8-32 20 1.50
H1C-056 H1C-056-S H1C-056-A 9/16 1  1/4  3/8  8-32 20 1.50
H1C-062 H1C-062-S H1C-062-A 5/8  1  1/2 13/32 10-32 20 2.40
H1C-068 H1C-068-S H1C-068-A 11/16 1  1/2 13/32 10-32 20 2.30
H1C-075 H1C-075-S H1C-075-A 3/4  1  3/4  1/2  1/4-28 20 3.90
H1C-081 H1C-081-S H1C-081-A 13/16 1  3/4  1/2  1/4-28 20 3.80
H1C-087 H1C-087-S H1C-087-A 7/8  1  7/8  1/2  1/4-28 20 4.50
H1C-093 H1C-093-S H1C-093-A 15/16 1  7/8  1/2  1/4-28 20 4.20
H1C-100 H1C-100-S H1C-100-A 1       2       1/2  1/4-28 20 4.80
H1C-106 H1C-106-S H1C-106-A 1  1/16 2       1/2  1/4-28 10 4.60
H1C-112 H1C-112-S H1C-112-A 1  1/8  2  1/8  1/2  1/4-28 10 5.30
H1C-118 H1C-118-S H1C-118-A 1  3/16 2  1/8  1/2  1/4-28 10 5.00
H1C-125 H1C-125-S H1C-125-A 1  1/4  2  1/4  1/2  1/4-28 10 5.70
H1C-131 H1C-131-S H1C-131-A 1  5/16 2  1/4  1/2  1/4-28 10 5.50
H1C-137 H1C-137-S H1C-137-A 1  3/8  2  3/8  1/2  1/4-28 10 6.20
H1C-143 H1C-143-S H1C-143-A 1  7/16 2  3/8  1/2  1/4-28 10 5.90
H1C-150 H1C-150-S H1C-150-A 1  1/2  2  1/2  1/2  1/4-28 10 6.50
H1C-156 H1C-156-S H1C-156-A 1  9/16 2  1/2  1/2  1/4-28 10 6.20
H1C-162 H1C-162-S H1C-162-A 1  5/8  3   5/8  5/16-24 10 13.20
H1C-168 H1C-168-S H1C-168-A 1 11/16 3   5/8  5/16-24 5 12.70
H1C-175 H1C-175-S H1C-175-A 1  3/4  3   5/8  5/16-24 5 12.10
H1C-187 H1C-187-S H1C-187-A 1  7/8  3  1/4  5/8  5/16-24 5 14.60
H1C-193 H1C-193-S H1C-193-A 1 15/16 3  1/4  5/8  5/16-24 5 14.00
H1C-200 H1C-200-S H1C-200-A 2       3  1/4  5/8  5/16-24 5 13.40
H1C-212 H1C-212-S   2  1/8 3  1/2  5/8  5/16-24 5 15.80
H1C-218 H1C-218-S   2  3/16 3  1/2  5/8  5/16-24 5 15.40
H1C-225 H1C-225-S   2  1/4  3  1/2  5/8  5/16-24 5 14.90
H1C-237 H1C-237-S   2  3/8  3  1/2  5/8  5/16-24 5 13.50
H1C-243 H1C-243-S   2  7/16 4    3/4  3/8-24 5 28.30
H1C-250 H1C-250-S   2  1/2  4    3/4  3/8-24 5 24.70
H1C-262 H1C-262-S   2  5/8  4  1/4  3/4  3/8-24 5 27.70
H1C-268     2 11/16 4  1/4  3/4  3/8-24 5 26.80
H1C-275 H1C-275-S   2  3/4  4  1/4  3/4  3/8-24 5 26.50
H1C-287 H1C-287-S   2  7/8  4  1/2  3/4  3/8-24 5 30.30
H1C-293 H1C-293-S   2 15/16 4  1/2  3/4  3/8-24 5 29.30
H1C-300 H1C-300-S   3       4  1/2  3/4  3/8-24 5 28.30
H1C-318     3  3/16 4  1/2  7/8  3/8-24 5 28.30
H1C-325     3  1/4  4  1/2  7/8  3/8-24 5 27.30
H1C-343     3  7/16 4  3/4  7/8  3/8-24 5 31.00
H1C-350     3  1/2  4  3/4  7/8  3/8-24 5 29.10
H1C-393     3 15/16 5  1/4  7/8  3/8-24 5 35.00
H1C-400     4       5  1/4  7/8  3/8-24 5 33.00

DIMENSION - BORE, INCH
TOLERANCE +.003/-.000
* Weights as noted are approximate
H1C-318 through H1C-400 do not have recessed screws Black oxide steel and aluminum bore sizes 3/4" through 3" do not have a relief cut. Stainless Steel bore sizes 1 9/16" through 3" do not have a relief cut