7/16" × 20 TPI External (Bolt) Thread Specifications
ASME Unified National Fine (UNF) per ASME B1.1 — bolt/screw dimensions
Applications
Automotive seat belts
Suspension components
Heavy-duty shelving
Technical Specifications
Parameter
Notation
Value
Threads Per Inch
n
20.0 TPI
Pitch
P
0.0500 in
Major Diameter
d
0.4362 in
Pitch Diameter
d2
0.4037 in
UNR Minor Dia (Max)
d1_max
0.3767 in
Allowance
es
0.0013 in
Tolerance Class
Class
2A
Thread Height
H
0.0433 in
Thread Depth
h3
0.0307 in
Crest Width
f / (P/8)
0.0063 in
Root Width
r / (P/4)
0.0125 in
Tap Drill
Drill
0.3875 in
Related Thread Sizes
7/16" × 14 TPI (UNC)
7/16" × 28 TPI (UNEF)
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