INTRODUCTION GRT9165 SERVICE MANUAL
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Published 10-01-2020 Control # 699-00
Table 1-10 Metric Series Screws of STAINLESS STEEL A2-70/A4-70 with Coarse Threads
Torque Values for fasteners with lubrication these torque values result in an 80% utilization of the yield strength.
Stainless steel fasteners tend to gall while being tightened. To reduce this risk, lubricate the threads and torque at low speeds
without interruptions. Do not use excessive pressure. Impact wrenches are not recommended.
Table 1-11 Inch Series Screws of STAINLESS STEEL 300 (18-8) with Coarse Threads
Torque Values for fasteners with lubrication these torque and preload values result in an 80% utilization of the yield strength.
Stainless steel fasteners tend to gall while being tightened. To reduce this risk, lubricate the threads and torque at low speeds
without interruptions. Do not use excessive pressure. Impact wrenches are not recommended.
Table 1-12 Inch Series Bearing Bolts – Untreated (black finish)
Size Torque (N-m)
M2.5x0.45 0.4
M3x0.5 0.9
M4x0.7 1.5
M5x0.8 3.1
M6x1 5.3
M8x1.25 13
M10x1.5 27
Size
Torque
lb-in lb-ft
#5-40 (0.125) 6.9 -
#6-32 (0.138) 9 -
#8-32 (0.164) 18 -
#10-24 (0.190) 21 -
1/4-20 68 -
5/16-18 120 10
3/8-16 210 17.5
Nominal Size, Threads per
Inch, and Series
Designation
Grade
Torque (ft/lb)
Maximum Nominal Minimum
5/8-11 UNC 8 234 225 216
5/8-18 UNF 8 250 240 230
3/4-10 UNC 8 385 370 355
7/8-9 UNC 8 615 591 567
1-8 UNC 8 929 893 857
1 1/4-7 UNC 8 2043 1964 1885
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