The threaded rod is basically used to fasten wood or metal together. It acts as a pin that is used to connect two materials together. The threaded rods serve as the best method to hang sheet metal ducts or any other equipment.
Screw Thread d | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | ||
P | Coarse Thread Pitch | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | |
Fine Thread Pitch | / | / | / | / | / | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||
Fine Thread Pitch | / | / | / | / | / | / | / | / | 1 | 1.25 | / | / | / | ||
per 1000 units ≈ kg | 18.7 | 30 | 44 | 60 | 78 | 124 | 177 | 319 | 500 | 725 | 970 | 1330 | 1650 | ||
Screw Thread d | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) | |||
P | Coarse Thread Pitch | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 | ||
Fine Thread Pitch | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | |||
Fine Thread Pitch | / | / | / | / | / | / | / | / | / | / | / | / | |||
per 1000 units ≈ kg | 2080 | 2540 | 3000 | 3850 | 4750 | 5900 | 6900 | 8200 | 9400 | 11000 | 12400 | 14700 |
Thread Size d | 1/4 | 5/16 | 7/16 | 3/8 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | ||
d | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.5625 | 0.625 | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | ||
PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | |
UNF | 28 | 24 | 24 | 20 | 20 | 18 | 18 | 16 | 14 | 12 | 12 | 12 | 12 | ||
8UN | - | - | - | - | - | - | - | - | - | - | 8 | 8 | 8 | ||
U | UNC | min | 0.05 | 0.056 | 0.063 | 0.072 | 0.077 | 0.084 | 0.091 | 0.1 | 0.111 | 0.125 | 0.143 | 0.143 | 0.167 |
max | 0.1 | 0.111 | 0.125 | 0.143 | 0.154 | 0.167 | 0.182 | 0.2 | 0.222 | 0.25 | 0.286 | 0.286 | 0.333 | ||
UNF | min | 0.036 | 0.042 | 0.042 | 0.05 | 0.05 | 0.056 | 0.056 | 0.063 | 0.072 | 0.084 | 0.084 | 0.084 | 0.084 | |
max | 0.071 | 0.083 | 0.083 | 0.1 | 0.1 | 0.111 | 0.111 | 0.125 | 0.143 | 0.167 | 0.167 | 0.167 | 0.167 | ||
8UN | min | - | - | - | - | - | - | - | - | - | - | 0.125 | 0.125 | 0.125 | |
max | - | - | - | - | - | - | - | - | - | - | 0.25 | 0.25 | 0.25 | ||
Thread Size d | 1-1/2 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | 4 | ||
d | 1.5 | 1.625 | 1.75 | 1.875 | 2 | 2.25 | 2.5 | 2.75 | 3 | 3.25 | 3.5 | 3.75 | 4 | ||
PP | UNC | 6 | - | 5 | - | 4 1/2 | 4 1/2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
UNF | 12 | - | - | - | - | - | - | - | - | - | - | - | - | ||
8UN | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
U | UNC | min | 0.167 | - | 0.2 | - | 0.222 | 0.222 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
max | 0.333 | - | 0.4 | - | 0.444 | 0.444 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | ||
UNF | min | 0.084 | - | - | - | - | - | - | - | - | - | - | - | - | |
max | 0.167 | - | - | - | - | - | - | - | - | - | - | - | - | ||
8UN | min | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | |
max | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |