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Square / Allen Drive Working Torque
Square / Allen drive working torque
DRIVE SIZE: The square or hex drive of each HYTORC is limited in its maximum output by its
material and its engagement area. Since your HYTORC uses specially suited alloy steel for its drive
members, the following maximum torque output can be achieved without drive failure, provided
the reaction member abuts close to the same plane as the nut to be turned.
If the reaction arm cannot abut on the same plane as the nut to be turned. Less torque should be
applied as the additional side load has to be taken into consideration.
When torque requirements are close or more than the values listed above, use HYTORC’s Socket
Hex - Drive with replaceable Hex Insert Bits.
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DRIVE SIZE MAXIMUM WORKING TORQUE PROBABLE FAILURE
1/2” Allen 350 ft./lbs. 380 ft./lbs.
1/2” Square 385 ft./lbs. 425 ft./lbs.
5/8” Allen 685 ft./lbs. 750 ft./lbs.
3/4” Allen 1,185 ft./lbs. 1,300 ft./lbs.
3/4” Square 1,390 ft./lbs. 1,485 ft./lbs.
7/8” Allen 1,880 ft./lbs. 2,065 ft./lbs.
1” Allen 2,810 ft./lbs. 3,100 ft./lbs.
1” Square 3,230 ft./lbs. 3,400 ft./lbs.
1-1/8” Allen 4,000 ft./lbs. 4,400 ft./lbs.
1-1/4” Allen 5,500 ft./lbs. 6,100 ft./lbs.
1-3/8” Allen 7,300 ft./lbs. 8,000 ft./lbs.
1-1/2” Allen 9,500 ft./lbs. 10,400 ft./lbs.
1-1/2” Square 11,520 ft./lbs. 12,475 ft./lbs.
1-5/8” Allen 12,000 ft./lbs. 13,200 ft./lbs.
1-3/4” Allen 15,000 ft./lbs. 16,500 ft./lbs.
1-7/8” Allen 18,500 ft./lbs. 20,300 ft./lbs.
2” Allen 22,500 ft./lbs. 24,700 ft./lbs.
2-1/4” Allen 32,000 ft./lbs. 35,100 ft./lbs.
2-1/2” Allen 44,000 ft./lbs. 48,200 ft./lbs.
2-1/2” Square 52,500 ft./lbs. 63,625 ft./lbs.