What are the torque settings for zinc plated fasteners?
Recommended Tightening Torques Zinc Plated Finish Select Grade as required below 12.9 / 10.9 / 8.8 Maximum Recommended Tightening Torques Metric Coarse Pitch Grade 12.9 Plated Metric Coarse Pitch Grade 10.9 Plated Metric Coarse Pitch Grade 8.8 Plated Ncm in-lb Ncm in-lb Ncm in-lb
Where are the torque settings on a MG?
Bolt/fixing Nm ft.lb Engine Engine Engine Camshaft cover bolts 9 7 Camshaft gear bolt 8mm bolt 10mm bolt 33 65 24 48 Crankshaft pulley bolt 205 151
How is torque calculated on a Grampian fastener?
The torque figures quoted have been based on a theoretical bolt load equal to 85% of the proof load of the bolting material. Where the proof load is not quoted in the specification this has been taken as 95% of the yield stress. Metric Bolting Diameter Tensile Stress Area mm² Suggested Bolt Load KN.
What is the grade of torque lock nut clamp?
The prevailing torque lock nut clamp loads are listed at 75% of the proof loads specified for the appropriate grade bolt: Grade C – SAE J429 Grade 8, FNL Grade 9 – FNL Grade 9 bolt, Grade F – SAE J429 Grade 5, Grade G – SAE J429 Grade 8.
Where can I find the torque for fasteners?
This page provides the sections on proper bolt torque from Barrett, “Fastener Design Manual,” NASA Reference Publication 1228, 1990. Other related chapters from the NASA “Fastener Design Manual” can be seen to the right. Determining the proper torque for a fastener is the biggest problem in fastener installation.
Which is the best way to control torque?
Control bolt hardness, finish, and geometry. Use “soft” bolts and tighten well past yield point. Use consistent snugging torque. Control bolt hardness and dimensons. Use bolts with flat, parallel ends. Leave transducer engaged during tightening operation. Mount transducer on bolt centerline.
Is the torque settings the same as poochar’s?
The torque settings match with the ones that poochar has already posted. So just for completion and confirmation of these data and as further reference for the (still) few German owners. Some typical service part numbers are also listed. Hey!
When to add running torque to normal torque?
Interaction formulas to be used for combining simultaneous shear and tension loads on a bolt (Should friction loads due to bolt clamping action be included in the interaction calculations?) Whether “running torque” for a locking device should be added to the normal torque