Bolt Torque & Size Charts (Rev. 3/28/2007)
39 Appendix
BOLT SIZE CHART
NOTE: Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts.
ABBREVIATIONS
AG...............................................................Agriculture
ASABE....................American Society of Agricultural &
Biological Engineers (formerly ASAE)
ASAE .......American Society of Agricultural Engineers
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
FT...............................................................Full Thread
GA.....................................................................Gauge
GR (5, etc.) ...........................................Grade (5, etc.)
HHCS........................................ Hex Head Cap Screw
HT ...........................................................Heat-Treated
JIC..............................Joint Industry Council 37° 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
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 7
Metric Bolt Thread Sizes
8MM 18MM14MM12MM10MM 16MM
2
34 5 6