Appendix
15
Bolt Torque & Size Charts (Rev. 3/28/2007)
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°
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
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
8
MM
1
8
MM
14MM
12MM
10MM
16MM
2
3
4
5
6
