Square
Drive Size |
Torque
Tool (Nm) |
Hand Tool Breaker / T-handle (Nm to ISO3315) |
Biggest Bolt/Nut |
Socket
Size (mm) |
Bolt/Nut
Torque (Nm) |
Length of
lever to centre of hand(s) for lower torque limit |
1/4" |
25 |
62 / 55 |
M8 |
13 |
25 |
12cm (one hand) |
3/8" |
110 |
202 / 180 |
M12 |
19 |
87 |
55cm (one hand) |
1/2" |
350 |
512 / 455 |
M18 |
27 |
294 |
88cm (two hands) |
3/4" |
1500 |
1412 / 1255 |
M30 |
46 |
1440 |
313cm (two hands) |
1" |
4500 |
2515 / 2236 |
M42 |
65 |
4048[*] |
559cm (two hands) |
Spanner Jaw Sizes and corresponding Nut/Bolt Use |
Diff (mm) |
Jaw Size Millimetres |
Jaw Size Inches |
Spanner Metric |
Spanner AF |
Spanner British |
Common
Nut/Bolt (*=non-preferred) |
2.97 | 0.117 | 10BA | ||||
0.23 | 3.20 | 0.126 | 3.2mm | M1.6 | ||
0.13 | 3.33 | 0.131 | 9BA | |||
0.53 | 3.86 | 0.152 | 8BA | |||
0.11 | 3.97 | 0.156 | 5/32 AF | No.0 UNC | ||
0.03 | 4.00 | 0.157 | 4mm | M2 | ||
0.37 | 4.37 | 0.172 | 7BA | |||
0.39 | 4.76 | 0.188 | 3/16 AF | No.2 UNC | ||
0.14 | 4.90 | 0.193 | 6BA | |||
0.10 | 5.00 | 0.197 | 5mm | M2.5 | ||
0.50 | 5.50 | 0.217 | 5.5mm | M3 | ||
0.06 | 5.56 | 0.219 | 7/32 AF | |||
0.03 | 5.59 | 0.220 | 5BA | |||
0.37 | 5.95 | 0.234 | 15/64 AF | |||
0.05 | 6.00 | 0.236 | 6mm | M3.5* | ||
0.30 | 6.30 | 0.248 | 4BA | |||
0.05 | 6.35 | 0.250 | 1/4 AF | No.4 UNC | ||
0.65 | 7.00 | 0.276 | 7mm | M4 | ||
0.14 | 7.14 | 0.281 | 9/32 AF | |||
0.02 | 7.16 | 0.282 | 3BA | |||
0.77 | 7.94 | 0.313 | 5/16 AF | No.6 UNC & No.10 UNC
(bolt) |
||
0.06 | 8.00 | 0.315 | 8mm | M5 | ||
0.23 | 8.23 | 0.324 | 2BA | |||
0.36 | 8.59 |
0.338 |
1/8 W; 3/16 BSF | |||
0.15 |
8.73 | 0.344 | 11/32 AF | No.8 UNC |
||
0.27 | 9.00 | 0.354 | 9mm | |||
0.27 | 9.27 | 0.365 | 1BA | |||
0.25 | 9.53 | 0.375 | 3/8 AF | No.10 UNC (nut) |
||
0.48 | 10.00 | 0.394 | 10mm | M6 | ||
0.49 | 10.49 | 0.413 | 0BA | |||
0.51 | 11.00 | 0.433 | 11mm | M7* | ||
0.11 | 11.11 | 0.438 | 7/16 AF | 1/4 UNF | ||
0.19 | 11.30 | 0.445 | 3/16 W; 1/4 BSF | |||
0.70 | 12.00 | 0.472 | 12mm | |||
0.70 | 12.70 | 0.500 | 1/2 AF | 5/16 UNF | ||
0.30 | 13.00 | 0.512 | 13mm | M8 | ||
0.33 | 13.34 | 0.525 | 1/4 W; 5/16 BSF | |||
0.67 | 14.00 | 0.551 | 14mm | |||
0.29 | 14.29 | 0.563 | 9/16 AF | 3/8 UNF | ||
0.71 | 15.00 | 0.591 | 15mm | |||
0.24 | 15.24 | 0.600 | 5/16 W; 3/8 BSF | |||
0.64 | 15.88 | 0.625 | 5/8 AF | 7/16 UNF (bolt) |
||
0.13 | 16.00 | 0.630 | 16mm | |||
1.00 | 17.00 | 0.669 | 17mm | M10 | ||
0.46 | 17.46 | 0.688 | 11/16 AF | 7/16 UNF (nut) | ||
0.54 | 18.00 | 0.709 | 18mm | |||
0.03 | 18.03 | 0.710 | 3/8 W; 7/16 BSF | |||
0.97 | 19.00 | 0.748 | 19mm | M12 | ||
0.05 | 19.05 | 0.750 | 3/4 AF | 1/2 UNF | ||
0.95 | 20.00 | 0.787 | 20mm | |||
0.64 | 20.64 | 0.813 | 13/16 AF | 9/16 UNF (bolt) |
||
0.19 | 20.83 | 0.820 | 7/16 W; 1/2 BSF | |||
0.17 | 21.00 | 0.827 | 21mm | |||
1.00 | 22.00 | 0.866 | 22mm | M14* |
||
0.22 | 22.23 | 0.875 | 7/8 AF | 9/16 UNF (nut) | ||
0.78 | 23.00 | 0.906 | 23mm | |||
0.37 | 23.37 | 0.920 | 1/2 W; 9/16 BSF | |||
0.44 | 23.81 | 0.938 | 15/16 AF | 5/8 UNF | ||
0.19 | 24.00 | 0.945 | 24mm | M16 | ||
1.00 | 25.00 | 0.984 | 25mm | |||
0.40 | 25.40 | 1.000 | 1 AF | |||
0.25 | 25.65 | 1.010 | 9/16 W; 5/8 BSF | |||
0.35 | 26.00 | 1.024 | 26mm | |||
0.99 | 26.99 | 1.063 | 1-1/16 AF | |||
0.01 | 27.00 | 1.063 | 27mm | M18* | ||
0.94 | 27.94 | 1.100 | 5/8 W; 11/16 BSF | |||
0.06 | 28.00 | 1.102 | 28mm | |||
0.57 | 28.58 | 1.125 | 1-1/8 AF | 3/4 UNF | ||
1.43 | 30.00 | 1.181 | 30mm | M20 | ||
0.48 | 30.48 | 1.200 | 11/16 W; 3/4 BSF | |||
1.27 | 31.75 | 1.250 | 1-1/4 AF | |||
0.25 | 32.00 | 1.260 | 32mm | M22* | ||
1.02 | 33.02 | 1.300 | 3/4 W; 7/8 BSF | |||
0.32 | 33.34 | 1.313 | 1-5/16 AF | 7/8 UNF | ||
0.66 | 34.00 |
1.339 | 34mm |
|||
1.31 | 35.31 | 1.390 | 13/16 W | |||
0.69 | 36.00 | 1.417 | 36mm | M24 | ||
0.51 | 36.51 | 1.438 | 1-7/16 AF | |||
1.08 | 37.59 | 1.480 | 7/8 W; 1 BSF | |||
0.41 | 38.00 | 1.496 | 38mm | |||
0.10 | 38.10 | 1.500 | 1-1/2 AF | 1 UNF | ||
2.03 |
40.13 | 1.580 | 15/16 W | |||
0.87 | 41.00 | 1.614 | 41mm | M27* | ||
0.27 | 41.28 | 1.625 | 1-5/8 AF | |||
1.14 | 42.42 | 1.670 | 1 W; 1-1/8 BSF | |||
0.44 | 42.86 | 1.688 | 1-11/16 AF | 1-1/8 UNF | ||
1.59 | 44.45 | 1.750 | 1-3/4 AF | |||
1.55 | 46.00 | 1.811 | 46mm | M30 | ||
0.04 | 46.04 | 1.813 | 1-13/16 AF | |||
1.21 | 47.24 | 1.860 | 1-1/8 W; 1-1/4 BSF | |||
0.38 | 47.63 | 1.875 | 1-7/8 AF | 1-1/4 UNF | ||
2.38 | 50.00 | 1.969 | 50mm | M33* | ||
0.80 | 50.80 | 2.000 | 2 AF | |||
1.27 | 52.07 | 2.050 | 1-1/4 W; 1-3/8 BSF | |||
0.32 | 52.39 | 2.063 | 2-1/16 AF | 1-3/8 UNF | ||
2.61 | 55.00 | 2.165 | 55mm | M36 | ||
0.56 | 55.56 | 2.188 | 2-3/16 AF | |||
0.83 |
56.39 |
2.220 |
1-3/8 W; 1-1/2
BSF |
|||
0.76 |
57.15 | 2.250 | 2-1/4 AF | 1-1/2 UNF | ||
2.85 |
60.00 | 2.362 | 60mm | M39* |