INTRODUCTION GRT8100 SERVICE MANUAL
1-22
Published 3/26/2018, Control # 596-05
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.
Size Torque (Nm)
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
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