ISO 5969:1979

Name: ISO 5969:1979 — Ground thread taps for pipe threads G series and Rp series — Tolerances on the threaded portion
SKU: ISO 5969:1979
Price: 12600 RUB
Availability: InStock

Ground thread taps for pipe threads G series and Rp series — Tolerances on the threaded portion

Название (английский):

ISO 5969:1979

Ground thread taps for pipe threads G series and Rp series — Tolerances on the threaded portion

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 1 октября 1979 г.
Издание:: ISO IS 5969 edition 1 version 1
ICS:: 25.100.50

Тип поставки:

Full version12 600 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:2 раб. дн. (перевод)

Цена:12 600 ₽

Описание (английский):

Specifies the deviations and tolerances on the major diameter and the pitch diameter together with the limits of these diameters for ground thread taps intended for production of these pipe threads acoording to ISO 228-1 and ISO 7-1 respectively. the internal threads produced with the ground thread taps are conventionally designated by the simplified denomination od "nut".

Abstract

Похожие стандарты

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Overview

ISO 5969:1979 specifies dimensional deviations and tolerances on the threaded portion of ground thread taps used to produce pipe threads of the G series (ISO 228‑1) and Rp series (ISO 7‑1). The standard defines how the major diameter and pitch diameter of ground taps must relate to the corresponding limits for internal threads (conventionally called “nuts”), and gives calculation examples and tabulated values for common sizes.

Key topics and technical requirements

Scope: Tolerances apply to the threaded portion of ground taps intended for production of ISO 228‑1 (G - parallel pipe threads) and ISO 7‑1 (Rp - parallel pipe threads where pressure-tight joints are made on the threads).

Tolerancing principle: Tap tolerances are expressed in terms of the nut pitch‑diameter tolerance unit t (equal to the nut pitch diameter tolerance TD2). Tap deviations are defined as fixed fractions of t.

Specified deviations (summary):

G series (ISO 228‑1): Js = +0.3 t, Em = +0.2 t, Es = +0.4 t (tap pitch‑diameter lower/upper deviations and major‑diameter lower deviation defined relative to nut limits).
Rp series (ISO 7‑1): Js = −0.3 t, Em = −0.3 t, Es = −0.1 t.

Angle tolerance: Thread flank angle tolerance is ±30′ (30 minutes).

Minor diameter: Not specified by this standard for taps.

Cumulative pitch error (TP): Assessed as per ISO 2857 (ground thread taps), referenced by the standard.

Tables and examples: Numeric tables provide basic diameters and calculated min/max pitch and major diameters for a range of pipe thread sizes (including worked examples for G 1/2 and Rp 1/2).

Applications and who uses it

Tap manufacturers use ISO 5969 to design and grind tap profiles and set allowable dimensional limits for production.

Tooling and gauge designers rely on the tolerances to make acceptance gauges and quality-control fixtures for pipe-thread taps.

Quality inspectors and production engineers use the standard to verify compliance and ensure interchangeability with nuts specified to ISO 228‑1 or ISO 7‑1.

Plumbing, hydraulic and pipe-fitting industries benefit from consistent mating between male and female connections produced with standardized taps.

Related standards

ISO 228‑1 - Pipe threads where pressure-tight joints are not made on the threads (designation, dimensions, tolerances).

ISO 7‑1 - Pipe threads where pressure-tight joints are made on the threads.

ISO 2857 - Ground thread taps for ISO metric threads (manufacturing tolerances and cumulative pitch error).

ISO 2284 - Hand taps for pipe threads (general dimensions and marking).

Keywords: ISO 5969, ground thread taps, pipe threads, G series, Rp series, tolerances, major diameter, pitch diameter, ISO 228‑1, ISO 7‑1, tap manufacturing.

ISO 5969:1979

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

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