#3 × 56 TPI External (Bolt) Thread Specifications
ASME Unified National Fine (UNF) per ASME B1.1 — bolt/screw dimensions
Applications
General purpose
Industrial (US)
Technical Specifications
Parameter
Notation
Value
Threads Per Inch
n
56.0 TPI
Pitch
P
0.0179 in
Major Diameter
d
0.0983 in
Pitch Diameter
d2
0.0867 in
UNR Minor Dia (Max)
d1_max
0.077 in
Allowance
es
0.0007 in
Tolerance Class
Class
2A
Thread Height
H
0.0155 in
Thread Depth
h3
0.0110 in
Crest Width
f / (P/8)
0.0022 in
Root Width
r / (P/4)
0.0045 in
Tap Drill
Drill
0.0811 in
Related Thread Sizes
#3 × 48 TPI (UNC)
Loading thread calculator...