Reference number
ISO 721:1991
ISO 721:1991
© ISO 2024
International Standard
ISO 721:1991
Rock drilling equipment — Integral stems
Edition 2
1991-01
1991-01
ISO 721:1991
4952
Published
(Edition 2, 1991)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
Specifies the dimensions. The 19 mm hexagonal integral stems with forged collared shank shall comply with the dimensions shown in figure 1 and given in table 1. The 22 mm stems shall comply with the dimensions shown in figure 2 and given in table 2. The 25 mm stems shall comply with the dimensions shown in figure 3 and given in table 3.
Life cycle
-
Previously
WithdrawnISO 721:1974
-
Now