ISO 1721:1974

Status : Published (Under review)

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

	Format	Language
std 1 40	PDF
std 2 40	Paper

CHF40

Convert Swiss francs (CHF) to your currency

Abstract

Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.

General information

Status
: Published

Publication date
: 1974-08

Stage
: International Standard confirmed [90.93]
Edition
: 1

Number of pages
: 6
Technical Committee :
ISO/TC 82

ICS :
73.100.30
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