Tightening Torque Table (New Standard Included)
TIGHTENING TORQUE OF STANDARD BOLTS
Tightening Torque Table (New Standard Included)
CAUTION:
- The special parts are excluded.
- The bolts/nuts in these tables have a strength (discrimination) number/symbol assigned to the head or the like. As to the relation between the strength grade in these tables and the strength (discrimination) number/symbol, refer to "DISCRIMINATION OF BOLTS AND NUTS".
PREVIOUS STANDARD
CAUTION:
The parts with aluminum or the cast iron washer surface/thread surface are excluded.
NEW STANDARD BASED ON ISO
CAUTION:
1. Use tightening torque with lubricant for the new standard bolts/nuts in principle. Friction coefficient stabilizer is applied to the new standard bolts/nuts.
2. However, use tightening torque without lubricant for the following cases. Friction coefficient stabilizer is not applied to the following bolts/nuts.
- Grade 4.8, M6 size bolt, Conical spring washer installed
- Paint removing nut (Size M6 and M8) for fixing with weld bolt
DISCRIMINATION OF BOLTS AND NUTS
