Общий каталог Widia 2017 - страница 1805
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Каталог Widia токарный инструмент 2017
Каталог Widia трохоидальное фрезерование
Каталог Widia техническое руководство по разверткам
Каталог Widia фрезы со сменными пластинами 2016
Каталог Widia достижения 2020- Table of Contents
- Turning
- Turning • ISO Inserts
- Turning • Tools for External Turning and Internal Boring
- Turning • Tools for External Turning and Internal Boring
- Turning • Tools for Small Hole Boring
- com E1Turning • Grooving and Cut-Off
- Turning • Threading
- Indexable Milling
- Indexable Milling • Face Mills
- Indexable Milling • Chamfer Mills
- Indexable Milling • 90° Shoulder Mills
- Indexable Milling • Helical Mills
- Indexable Milling • Slotting Mills
- Indexable Milling • Copy Mills
- Solid End Milling
- Solid End Milling • High-Performance Solid Carbide End Mills
- Solid End Milling • General Purpose Solid Carbide End Mills
- Solid End Milling • High-Performance High-Speed Steel (HSS-E/PM)
- Solid End Milling • Burs
- Holemaking
- Holemaking • High-Performance Solid Carbide Drills
- Holemaking • Modular Drills
- Holemaking • Indexable Drills
- Holemaking • Modular Drills
- Holemaking • Indexable Drills
- Holemaking • Hole Finishing
- Tapping
- Tapping Portfolio
- Index by Order Number
- Index by Catalogue Number
- Global Contacts
- Informational Icons Guide
- Material Overview • DIN
Inch Screw Thread with UNJ Profi le
A thread system is available for aerospace and other applications where high fatigue strength is required. The UNJ thread form is defi ned by ASME B1.15 and is similar to Military Specifi cation MIL-S-8879. Screw thread assemblies consist of external and internal threads. In order to minimise the stress on the external UNJ thread, a controlled root radius is required that is equal to 0.15011P to 0.18042P, where P is the thread pitch. Internal UNJ threads are not required to have a radius at either the major or minor diameters.
Nut: UNx/UNJx
Screw: UNx UNJx
UNx: R0.14434P-0.125P
| Because external UNJ threads must be produced with a defi ned | For UNJ thread specifi cations, the reader is referred to ASME B1.15. |
| root radius, standard UN tooling may not be used. However, internal | Please note this standard includes Class 3 and Class 2 UNJ screw |
| UNF threads may be produced with ground thread UN taps sized to | threads. However, only Class 3 UNJ threads meet the requirements |
| produce the proper class of fi t. The tap does not need to be marked | of Military Specifi cation MIL-S-8879. For Unifi ed Inch (UN) thread |
| with a letter J. Attention must be paid to the tap drill since the minor | specifi cations, refer to ASME B1.1. |
diameter has to be specifi ed so as to provide clearance with the root radius on the external thread.