SAE ARP1201-1970
HEXAGON BAR SIZES FOR FLUID FITTINGS

Standard No.

SAE ARP1201-1970

Release Date

1970

Published By

Society of Automotive Engineers (SAE)

Status

Be replaced

Replace By

SAE ARP1201A-1980

Latest

SAE ARP1201C-2013

Scope

This recommended practice lists the recommended across flats limits for hexagon bar stock drawing callouts. This recommendation is based on the comparison of existing hexagon tolerance standards and minimum wrench openings. These callouts should be used when specifying fluid fitting dimensions in which the unmachined material hex dimension will appear on the finished part as a wrenching surface.

SAE ARP1201-1970 history

• 2013 SAE ARP1201C-2013 Tolerances, Hexagon Bar, Machined Flat and Forged Wrenching Flat Sizes for Fluid Fittings
• 2001 SAE ARP1201C-2001 (R) Tolerances, Hexagon Bar, Machined Flat and Forged Wrenching Flat Sizes for Fluid Fittings
• 2000 SAE ARP1201B-2000 Hexagon Bar, Machined Flat and Forged Wrenching Flat Sizes for Fluid Fittings
• 1992 SAE ARP1201B-1992 Hexagon Bar@ Machined Flat and Forged Wrenching Flat Sizes for Fluid Fittings
• 1980 SAE ARP1201A-1980 HEXAGON BAR AND FORGED WRENCHING FLAT SIZES FOR FLUID FITTINGS
• 1970 SAE ARP1201-1970 HEXAGON BAR SIZES FOR FLUID FITTINGS