. Please enable JavaScript in your web browser for the live calculations to work properly.
External Custom Thread Designer Standard UN & UNR
Nominal Diameter d
bsc
= d =
in
Thread Pitch P =
thrds / in
Thread Pitch P =
thrds / in
Thread Designation
UN
UNC
UNF
UNEF
Thread Class =
1A
2A
3A
Length of Thread Engagement =
Pitches
Calculated Thread Data
Thread Specification
Max. Major Dia. d
max
=
in
Min. Major Dia. d
min
=
in
Max. Pitch Dia. d
2
max =
in
Min. Pitch Dia. d
2
min =
in
Max UN minor diameter d
1
=
in
Max UNR minor diameter d
3
=
in
Height Triangle H =
in
Double height UN Thrd 2h
s
=
in
Double height UNR Thrd 2h
s
=
in
Tolerance Data
Allowance
es =
in
Major Dia. Tolerance Td =
in
external thread addendum 2h
as
=
in
Pitch Tolerance Td
2
=
in
Minor Dia. Tolerance Td
1
=
in
Calc. Length of Single thead LE =
in
Reset
Print This