Reference number
ISO 721:1991
ISO 721:1991
© ISO 2026
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.
ISO 721:1991
ISO 721:1991
4952
CHF
44
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