Обший каталог Yamawa 2016 - 2017 - страница 788

Classes of Internal Threads and Classes of Cutting Taps
Description of products


1. ISO Tap Classes.
μm
Pitch Dia. tolerance zone of 5H=100μm : (Tolerance 20μm)
Class Class 1 Class 2 Class 3

Symbol ISO 1 ISO 2 ISO 3
Classes of
4H, 5H 6H 6G, 7H, 8H
Internal threads
class 3


class 2


class 1


Internal thread : Tap : Pitch Dia. tolerance zone
Pitch Dia. tolerance of 5H Basic Pitch Dia.
2. Comparison of pitch diameter tolerance zone for the classes of internal thread and tap.
■For Metric threads
(1) Tap limit classes of YAMAWA P ISO 1, ISO 2, ISO 3, ISO 2X.
(2) Pitch diameter tolerance zone of ISO 5H class 1 for M1.4 and smaller
(3) Pitch diameter tolerance zone of ISO 6H (Internal thread) larger than MI.4


Sizes
Basic Pitch Dia. (+)μm
ISO 2X

ISO 1 ISO 2
ISO 1
ISO 2X
ISO 2
ISO 1 ISO 2 ISO 3
ISO 2X ISO 2X
Internal threads 5H
ISO 1 ISO 2
Internal threads 6H
ISO 2X

ISO 1 ISO 2

ISO 2X

ISO 1 ISO 2

ISO 2X

ISO 1 ISO 2

ISO 2X

ISO 1 ISO 2

ISO 2X

ISO 1 ISO 2

ISO 2X

ISO 1 ISO 2
Information
Technical


ISO 2X

ISO 1 ISO 2 ISO 3

ISO 2X

ISO 1 ISO 2 ISO 3


Technical-13
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