Appendix
62
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° 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
18MM
14MM
12MM
10MM
16MM
2
3
4
5
6
