US Design Meets Federal Specification FF-T-791B
 
Diameter and Take up Size Average Overall with ends in Closed Position(A + B) Weight (Each)
Eye & Eye Jaw & Jaw Jaw & Eye
Inches Inches Kgs Kgs Kgs
3/8 X 6 1 7/8 0.32 0.37 0.34
1/2 X 6 13 5/16 0.66 0.73 0.69
1/2 X 9 16 5/16 0.76 0.79 0.77
1/2 X 12 19 5/16 0.91 0.96 0.93
5/8 x 6 15 1/2 1.06 1.37 1.06
5/8 x 9 18 1/2 0.30 1.30 1.39
5/8 x 12 21 1/2 1.71 1.53 1.71
3/4 X 6 17 1.65 1.86 1.75
3/4 X 9 20 1.95 2.31 1.95
3/4 X 12 23 2.30 2.56 2.43
3/4 X 18 29 2.85 3.11 2.98
7/8 x 12 24 5/8 3.33 3.70 3.52
7/8 x 18 30 5/8 4.24 4.14 4.19
1 x 6 20 5/8 3.86 4.22 4.04
1 x 12 26 5/8 5.09 5.06 5.07
1 x 18 32 5/8 5.99 6.61 6.02
1 x 24 38 5/8 7.51 7.84 7.38
1 1/4 X 12 29 7/8 8.11 9.47 8.79
1 1/4 X 18 35 7/8 10.35 11.55 10.95
1 1/4 X 24 41 7/8 12.13 13.00 12.87
1 1/2 X 12 32 3/8 12.66 13.60 13.13
1 1/2 X 18 38 3/8 15.04 14.30 14.69
1 1/2 x 24 44 3/8 17.07 18.42 17.75
1 3/4 X 18 41 3/4 23.05 24.93 22.27
1 3/4 X 24 47 3/4 26.27 28 70 27.49
2 x 24 51 3/4 40.68 45.30 42.85
2 1/2 X 24 53 1/4 63.28 65.78 72.36
2 3/4 x 24 54 1/2 85.08 88.26 86.84
Shank Diameter & Take Up Working Load Limit Weight Each Body Sizes in Inches
Inches Kgs Kgs A B C D E G H J
3/8 X 6 545 0.14 7.12 6.00 0.56 0.88 0.38 0.62 0.50 0.19
1/2 X6 1000 0.28 7.50 6.00 0.75 1.12 0.50 0.81 0.62 0.25
1/2 x 9 1000 0.31 10.50 9.00 0.75 1.12 0.50 0.81 0.62 0.25
1/2 x 12 1000 0.46 13.50 12.00 0.75 1.12 0.50 0.81 0.62 0.25
5/8 X 6 1590 0.41 7.88 6.00 0.94 1.38 0.62 1.00 0.75 0.31
5/8 X 9 1590 0.54 10.88 9.00 0.94 1.38 0.62 1.00 0.75 0.31
5/8 X 12 1590 0.65 13.88 12.00 0.94 1.38 0.62 1.00 0.75 0.31
3/4 X 6 2360 0.59 8.25 6.00 1.12 1.69 0.75 1.12 0.94 0.38
3/4 X 9 2360 0.80 11.25 9.00 1.12 1.69 0.75 1.12 0.94 0.38
3/4 x 12 2360 0.95 14.25 12.00 1.12 1.69 0.75 1.12 0.94 0.38
3/4 x 18 2360 1.14 20.25 18.00 1.12 1.69 0.75 1.12 0.94 0.38
7/8 x 12 3270 1.23 14.62 12.00 1.31 1.94 0.88 1.31 1.06 0.44
7/8 x 18 3270 1.73 20.62 18.00 1.31 1.94 0.88 1.31 1.06 0.44
1 x6 4545 1.13 9.00 6.00 1.50 2.25 1.00 1.50 1.25 0.50
1 x 12 4545 1.79 15.00 12.00 1.50 2.25 1.00 1.50 1.25 0.50
1 x 18 4545 2.40 21.00 18.00 1.50 2.25 1.00 1.50 1.25 0.50
1 x 24 4545 3.36 27.00 24.00 1.50 2.25 1.00 1.50 1.25 0.50
1 1/4 X 12 6905 2.39 15.12 12.00 1.56 2.62 1.25 1.88 1.50 0.56
1 1/4 X 18 6905 3.53 21.12 18.00 1.56 2.62 1.25 1.88 1.50 0.56
1 1/4 X 24 6905 4.63 27.12 24.00 1.56 2.62 1.25 1.88 1.50 0.56
1 1/2 X 12 9725 3.98 15.75 12.00 1.88 3.00 1.50 2.25 1.75 0.62
1 1/2 X 18 9725 5.00 21.75 18.00 1.88 3.00 1.50 2.25 1.75 0.62
1 1/2 X 24 9725 6.23 27.75 24.00 1.88 3.00 1.50 2.25 1.75 0.62
1 3/4 X 18 12725 7.45 22.38 18.00 2.19 3.62 1.75 2.62 2.12 0.75
1 3/4 X 24 12725 9.66 28.38 24.00 2.19 3.62 1.75 2.62 2.12 0.75
2 x 24 16820 12.55 29.00 24.00 2.50 4.12 2.00 3.00 2.38 0.88
2 1/2 X 24 27272 24.55 31.06 24.00 3.53 5.62 2.75 3.88 3.12 1.25
2 3/4 x 24 34090 24.55 31.06 24.00 3.53 5.62 2.75 3.88 3.12 1.25
EYE DIMENSIONS
A B C D E SAFE WORKING LOAD
INCHES m/m INCHES m/m INCHES m/m INCHES m/m INCHES m/m LBS KGS
3/8 10 17/32 13 11/32 9 1 1/8 28 2 9/16 65 1,200 544
1/2 12 23/32 18 7/l6 11 1 7/16 36 3 7/32 82 2,200 997
5/8 16 7/8 22 1/2 12 1 3/4 44 3 7/8 98 3,500 1,586
3/4 19 1 25 5/8 16 2 1/8 54 4 11/16 119 5,200 2,356
7/8 22 1 1/4 32 3/4 19 2 3/8 60 5 1/4 133 7,200 3,262
1 25 1 7/16 36 7/8 22 3 76 6 3/8 162 10,000 4,530
1 1/4 32 1 13/16 46 1 1/8 28 3 3/16 90 7 3/4 197 15,200 6,886
1 1/2 38 2 1/8 54 1 1/4 32 4 1/8 105 8 5/8 219 21,400 9,694
1 3/4 44 2 3/8 60 1 1/2 38 4 11/16 119 10 254 28,000 12,684
2 50 2 11/16 68 1 3/4 45 5 3/4 146 12 1/8 308 37,000 16,761
2 1/2 63 3 5/16 79 2 50 6 9/16 164 14 354 60,000 27,272
2 3/4 69 3 3/8 82 2 1/4 56 7 1/8 177 15 375 75,000 34,090
JAW DIMENSIONS
A B C D E F G H SAFE WORKING LOAD
INCHES m/m INCHES m/m INCHES m/m INCHES m/m INCHES m/m INCHES m/m INCHES m/m INCHES m/m LBS KGS
3/8 10 7/8 22 5/16 8 1/2 13 5/16 8 29/32 21 2 3/16 55 13/16 21 1,200 544
1/2 12 1 1/16 27 3/8 10 5/8 16 13/32 10 3/4 19 2 3/4 70 1 25 2,200 997
5/8 16 1 5/16 33 1/2 13 1/2 19 1/2 13 1 1/32 26 3 1/2 89 1 5/16 33 3,500 1,586
3/4 19 1 1/2 38 5/8 16 15/16 24 9/16 14 1 9/32 33 4 1/8 105 1 5/8 41 5,200 2,356
7/8 22 1 3/4 45 1 3/4 19 1 1/8 28 11/16 17 1 15/32 38 4 27/32 123 1 7/8 48 7,200 3,262
1 25 2 1/16 52 1 7/8 22 1 3/16 30 25/32 20 1 21/32 42 5 17/32 140 2 1/8 54 10,000 4,530
1 1/4 32 2 13/16 71 1 1/8 28 1 1/4 45 1 25 2 3/32 52 7 3/16 182 2 5/8 67 15,200 6,886
1 1/2 38 2 13/16 71 2 3/8 35 2 1/16 52 1 1/16 27 2 15/32 63 7 3/8 200 3 1/8 79 21,400 9,694
1 3/4 44 3 3/8 86 2 5/8 41 2 3/8 60 1 1/4 32 2 29/32 89 9 3/8 238 3 1/2 89 28,000 12,684
2 50 3 11/16 94 2 50 2 1/2 63 1 1/2 38 3 17/32 91 10 7/8 276 4 3/16 106 37,000 16,761
2 1/2 63 4 1/8 103 2 1/4 56 3 75 1 9/16 40 3 3/4 94 13 1/2 338 5 5/8 142 60,000 27,272
2 3/4 69 4 1/4 106 2 3/4 69 3 5/8 92 1 5/8 41 3 7/8 97 14 1/2 365 6 1/8 154 75000 34,090