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BS 949-4:1990 EN 22857:1989 ISO 2857:1973 : Screwing taps — No. 2:1986) Part 4: Specification for metric ground thread taps: manufacturing tolerances

BS 949-4:1990 EN 22857:1989 ISO 2857:1973 : Screwing taps — No. 2:1986) Part 4: Specification for metric ground thread taps: manufacturing tolerances

Description Printed version of this standard is available at Library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. Abstract This International Standard specifies the manufacturing tolerances on the threaded portion of taps for producing the ISO metric threads of tolerance classes 4H to 8H and 4G to 6G as defined in ISO/R 965-I to III (excluding, consequently, classes 7G and 8G considered as usually produced with ground thread taps). It is valid for the short taps specified in ISO/R 529 as well as for any other kind of ground thread taps with the same diameters and pitches. The internal threads produced with those taps are conventionally designated by the simplified denomination of “nut” in agreement with the word used in ISO/R 965 for the general designation of all internal threads.

Contributor(s): MJMS - Data Entry Person Primary Item Type: British Standard Identifiers: ISBN 0580186296 ICS  25.100.50 Taps and threading dies Language: English Subject Keywords: Threading tools; Taps (threading); Hand tools; Thread pitch; Grades (quality); Marking; Dimensional tolerances; ISO metric threads; Dimensions; Cutting tools First presented to the public: 7/26/2023 Original Publication Date: 6/29/1990 Previously Published By: British Standards Institution Place Of Publication: London, United Kingdom Citation: Extents: Number of Pages - 15 License Grantor / Date Granted:   / ( View License ) Date Deposited 2023-07-26 10:16:48.253 Submitter: Mohd Jasnizam Mohd Salleh

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