BS 4084:1978
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for UNJ threads, with controlled root radius, for aerospace: inch series
Hardcopy , PDF
15-08-1996
English
29-12-1978
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Foreword
Cooperating organizations
Specification
1. Scope
2. Field of application
3. Basic profile of thread
4. Series of threads
5. Designation of threads
6. Tolerances
7. Gauging by limit gauges
8. Tables
Tables
1. Basic profile
2. Basic dimensions
3. Thread series
4. Limit values of the root radius R
(dimensions in inches with metric conversions)
5. Values of tolerances for profile dimensions
(inch dimensions)
6. Values of tolerances for profile dimensions
(metric conversions)
7. Maximum permissible deviation in the lead error
and half-angle (inch dimensions)
8. Maximum permissible deviation in the lead error
and in the half-angle (metric conversions
Appendix
A. 20 UNJ constant pitch series for diameters up to
and including 3 inches
Determines the basic triangular profile for inch series UNJ threads with controlled root radius. Gives a system of designating and also, for diameters from 0.060 in to 6 in, 3 series of diameter/pitch combinations and basic dimensions and tolerances. Also specifies the gauge procedures to be used. National appendix adds 20 UNJ constant pitch series for diameters up to and including 3 inches.
| Committee |
FME/9
|
| DocumentType |
Standard
|
| Pages |
58
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 919-1:1960 | Specification for screw gauge limits and tolerances Gauges for screw threads of Unified form |
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