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6. STANDARD BOLTS SPECIFICATIONS
Metric bolt strength is embossed on the head of each bolt. The strength of bolt can be
classified as 4T, 7T, 8.8T, 10.9T, 11T and 12.9T in general.
Observe standard tightening torque during bolt tightening works and can adjust torque to be
proper within 15 % if necessary. Try not to over max. allowable tightening torque if not
required to do so.
Determine extra proper tightening torque if tightens with washer or packing.
If tightens bolts on the below materials, be sure to determine the proper torque.
- Aluminum alloy: Tighten to 80 % of above torque table.
- Plastics: Tighten to 20 % of above torque table.
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