Study of Wrenching Engagement on AS870C Double Hexagon (12 Point) Fasteners

Standard:
Reaffirmed:
  • 2012-11-19
 
  • CURRENT
Publisher:
  • SAE International
Pages:
16
Scope:

This study addresses the adequacy of sockets, wrenches, and torque adapters conforming to AS954 to wrench 12 point fasteners with wrenching configurations conforming to AS870C. Reported wrenching problems with smaller sizes are investigated through examining the combined tolerances on the fasteners and wrenches, conducting torque testing on typical high strength lock nuts. Possible solutions to correct these wrenching problems are presented.

Rationale:

AIR1936A has been reaffirmed to comply with the SAE five-year review policy.

History:
Standard Published Revision Status
AIR1936A 2012-11-19 Latest Reaffirmed
1985-03-01 Historical Issued
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