Общий каталог Widia 2017 - страница 1797

• 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

Technical Information Taper Pipe Tap Thread Limits • Ground Thread • Reference USCTI Table 338 American National Standard Taper Pipe Thread Form (NPT) Aeronautical National Taper Pipe Thread Form (ANPT) Dryseal American National Standard Taper Pipe Thread Form (NPTF) Projection* taper per foot limits nominal projection size threads projection* tolerance tap drill size** (in) per inch (in) +/– min max length L1 NPT, ANPT, NFTF 1/16 27 .312 .063 .719 .781 .160 C 1/8 27 .312 .063 .719 .781 .1615 Q 1/4 18 .459 .063 .719 .781 .2278 7/16 3/8 18 .454 .063 .719 .781 .240 9/16 1/2 14 .579 .063 .719 .781 .320 45/64 3/4 14 .565 .063 .719 .781 .339 29/32 1 11-1/2 .678 .094 .719 .781 .400 1-9/64 1-1/4 11-1/2 .686 .094 .719 .781 .420 1-31/64 1-1/2 11-1/2 .699 .094 .719 .781 .420 1-23/32 2 11-1/2 .667 .094 .719 .781 .436 2-3/16 2-1/2 8 .925 .094 .734 .781 .682 2-39/64 3 8 .925 .094 .734 .781 .766 3-15/64 3-1/2 8 .938 .125 .734 .781 .821 — 4 8 .950 .125 .734 .781 .844 — *Distance from small end of tap projects through L1 taper thread ring gage. **Recommended size given permits direct tapping without reaming the hole, but only gives a full thread for approximately the L1 length. Reprinted with permission from United States Cutting Tool Institute (USCTI). Published by Kennametal Inc. © 2014. All rights reserved. „Pipe Taps General-purpose pipe taps are appropriate for Short projection pipe taps are made with a threading a wide variety of materials, both ferrous projection shorter than standard for taper pipe and non-ferrous. tapping where the depth of tapping is limited. Standard Ground thread pipe taps are standard in Projection Shortest Special short projection taper pipe taps can American Standard Pipe Form (NPT) and Projection be furnished with American National Standard American Standard Dryseal Pipe Form (NPFT). Taper Pipe thread (ANPT) or Dryseal American NPT threads require the use of a sealer, like National Standard Taper Pipe thread (NPTF, Teflon® tape or pipe compound. Dryseal taps are PTF-SAE Short, or PTF-SPL Extra Short). used to tap fittings, which will give a pressure- tight joint without the use of a sealer. For information on short projection pipe tapsL1Basicand hole preparation for NPT, NPTF, and ANPT The nominal size of a pipe tap is that of the pipe Ring Gage Size internal pipe threads, consult WIDIA-GTD™ fitting to be tapped, not the actual size of the Technical Bulletins. tap. The thread tapers 3/4" per foot. All pipe taps are furnished with 2-1/2–3-1/2 thread chamfer. widia.com Y93 Technical Information