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48 Appendix
Bolt Torque & Size Charts (Rev. 8/14/2002)
BOLT SIZE CHART
NOTE: Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts.
5/16 3/8 1/2 5/8 3/4 7/8
SAE Bolt Thread Sizes
MM 25 50 75 100 125 150 175
IN 1 2 3 4 5 6
7
Metric Bolt Thread Sizes
8MM 18MM14MM12MM10MM
16MM
ABBREVIATIONS
AG............................................................. Agriculture
ATF ..............................Automatic Transmission Fluid
BSPP ...........................British Standard Pipe Parallel
BSPTM ..............British Standard Pipe Tapered Male
CV...................................................Constant Velocity
CCW ............................................ Counter-Clockwise
CW............................................................. Clockwise
F......................................................................Female
GA....................................................................Gauge
GR (5, etc.) ......................................... Grade (5, etc.)
HHCS.......................................Hex Head Cap Screw
HT..........................................................Heat-Treated
JIC ...............Joint Industry Council 37° Degree Flare
LH ...............................................................Left Hand
LT ......................................................................... Left
m....................................................................... Meter
mm.............................................................. Millimeter
M.........................................................................Male
MPa........................................................Mega Pascal
N .................................................................... Newton
NC.....................................................National Coarse
NF......................................................... National Fine
NPSM .................. National Pipe Straight Mechanical
NPT.........................................National Pipe Tapered
NPT SWF........National Pipe Tapered Swivel Female
ORBM .........................................O-Ring Boss - Male
P ........................................................................ Pitch
PBY..................................................... Power-Beyond
psi ........................................Pounds per Square Inch
PTO.................................................... Power Take Off
QD ................................................. Quick Disconnect
RH............................................................ Right Hand
ROPS..........................Roll-Over Protective Structure
RPM.......................................Revolutions Per Minute
RT ......................................................................Right
SAE.........................Society of Automotive Engineers
UNC....................................................Unified Coarse
UNF ........................................................ Unified Fine
UNS ................................................... Unified Special