Proper Torque For Fasteners - Progressive Turf Equipment Pro-Flex 120 Operators Manual And Parts Lists

PROPER TORQUE FOR FASTENERS

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
(No Dashes)
Bolt Diameter (in.)
(SAE Grade 5 Bolts)
5/16
7/16
9/16
1" LH Spindle Nut
NOTE: The gearbox mounting bolts are metric.
Size M10 x 25, 8.8 (10 mm diameter x 25mm long, grade 5)
SAE Grade 5
(3 Dashes)
Recommended Torque in Foot Pounds
3/8
½
5/8
¾
7/8
1
SAE Grade 8
(6 Dashes)
(Newton-Meters)
21 (28)
38 (52)
55 (75)
85 (115)
125 (170)
175 (240)
300 (410)
450 (610)
680 (925)
60 (82)
33