ASME B1.9-1973
Buttress Inch Screw Threads 7 Degrees/45 Degrees Form with 0.6 Pitch Basic Height of Thread Engagement

Standard No.

ASME B1.9-1973

Release Date

1973

Published By

American Society of Mechanical Engineers (ASME)

Status

Be replaced 1973-01

Replace By

ASME B1.9-1973(R2017)

Latest

ASME B1.9-1973(R2017)

Scope

This Standard relates to screw threads of buttress form and provides: (a) A form of 7 degrees/45 degrees buttress thread with 0.6p basic height of thread engagement (b) A table of preferred diameter-pitch combinations (c) A formula for calculating pitch diameter tolerances (d) Tolerances for major and minor diameters (e) A system of allowances between external and internal threads (f) Recommended methods of measuring and gaging (g) Dimensional acceptability of buttress product

ASME B1.9-1973 history

• 0000 ASME B1.9-1973(R2017)
• 1973 ASME B1.9-1973 Buttress Inch Screw Threads 7 Degrees/45 Degrees Form with 0.6 Pitch Basic Height of Thread Engagement

ASME B1.9-1973 -All Parts