Hamilton Jet HTX30, Product Manual

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HTX30 Product Manual Appendix
8-13
85113 Tightening torques
Issue Y

Make sure all threads are clean.

Torque values are for fasteners lubricated with grease or Loctite unless otherwise stated.

Where the assembly drawing does not specify Loctite or thread lubricant, use the thread
lubricant specified in this section. Where Loctite is specified, refer to the Loctite application
guide (
►
page 8-3).

Torques specified in assembly drawings will take precedence over this section. Use this section
when the assembly drawing does not specify torque for the fastener.

For specific instructions on tightening torques for impeller nuts, coupling nuts, and bearing lock
nuts refer to the relevant jet assembly drawing.

Do not use flat washer, spring washer, nyloc nut and Loctite on the nozzle housing attachment
studs.

The longest thread length on a stud should be inserted into the tapped hole unless otherwise
noted on the assembly drawing.

Conversion factors 1 N·m = 0.736 lbf ft /1 lbf ft = 1.356 N·m.
Nut tightening torques
Nuts on 316 stainless steel studs
Size Torque
A - Identified with no centre drill
With grease or Loctite
M6 5 N·m (3.7 lbf ft)
M8 12 N·m (9 lbf ft)
M10 24 N·m (18 lbf ft)
M12 45 N·m (33 lbf ft)
M16 75 N·m (55 lbf ft)
M20 120 N·m (89 lbf ft)
Nuts on high strength stainless steel studs
Size Torque
A - Identified with centre drill
With Grease or Loctite With Antiseize
M8 17 N·m (13 lbf ft) 12 N·m (9 lbf ft)
M10 33 N·m (24 lbf ft) 24 N·m (18 lbf ft)
M12 60 N·m (44 lbf ft) 45 N·m (33 lbf ft)
M14 95 N·m (70 lbf ft) 70 N·m (52 lbf ft)
M16 150 N·m (111 lbf ft) 110 N·m (81 lbf ft)
M20 270 N·m (199 lbf ft) 210 N·m (155 lbf ft)
M24 470 N·m (347 lbf ft) 350 N·m (258 lbf ft)
M30 900 N·m (664 lbf ft) 650 N·m (479 lbf ft)
Nuts on stainless steel cotter pins
Size Torque
M6 5 N·m (3.7 lbf ft)
M8 12 N·m (9 lbf ft)
M10 24 N·m (18 lbf ft)
M12 45 N·m (33 lbf ft)