Progressive Turf Equipment TDR-22 1393176 and Above - Manual (Page 37)

34
FASTENERS INSTALLATION TORQUE
The chart lists the correct tightening torque for fasteners on Progressive Turf
Equipment mowers. When bolts are to be tightened or replaced, refer to this
chart to determine the proper torque except when specific torque values are
assigned in the manual. Only SAE grade 5 fasteners are to be used in the
assembly of this machine, or as otherwise specified in this manual.
Bolt Head Markings
SAE Grade 2 SAE Grade 5 SAE Grade 8
(No Dashes) (3 Dashes) (6 Dashes)
Bolt Diameter (in.)
(SAE Grade 5 Bolts)
Recommended Torque in
Foot Pounds (Newton-Meters)
5/16 21 (28)
3/8 38 (52)
7/16 55 (75)
½ 85 (115)
9/16 125 (170)
5/8 175 (240)
¾ 300 (410)
7/8 450 (610)
1 680 (925)
1” LH Spindle Nut
60 (82)