BOLT SIZE CHART
NOTE: Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts.
SAE Bolt Thread Sizes
5/16 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 |
IN | 1 |
| 2 |
| 3 |
| 4 |
| 5 |
| 6 |
| 7 | ||||||||||||||||||||||||||||||||||||||||||
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MM | 25 | 50 | 75 | 100 | 125 | 150 | 175 |
Metric Bolt Thread Sizes |
|
| 16MM |
| |
8MM | 10MM | 12MM | 14MM | 18MM | |
ABBREVIATIONS
AG | Agriculture |
ATF | Automatic Transmission Fluid |
BSPP | British Standard Pipe Parallel |
BSPTM | British Standard Pipe Tapered Male |
CV | Constant Velocity |
CCW | |
CW | Clockwise |
F | Female |
GA | Gauge |
GR (5, etc.) | Grade (5, etc.) |
HHCS | Hex Head Cap Screw |
HT | |
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 | |
P | Pitch |
PBY | |
psi | Pounds per Square Inch |
PTO | Power Take Off |
QD | Quick Disconnect |
RH | Right Hand |
ROPS | |
RPM | Revolutions Per Minute |
RT | Right |
SAE | Society of Automotive Engineers |
UNC | Unified Coarse |
UNF | Unified Fine |
UNS | Unified Special |
Bolt Torque & Size Charts (Rev. 8/14/2002)