Appendix
63
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
8MM
18MM
14MM
12MM
10MM
16MM
2
3
4
5
6