Spline socket keys and bits dimensions chart according to ASME B18.3-2003 standard.
Spline socket keys and bits are tools which are used to drive screws with a spline socket . Spline Keys are furnished as Short Arm Series or Long Arm Series.
Some important notes from the ASME B18.3:
- Spline keys and bits shall be fabricated from an alloy steel having two or more of the followingalloying elements: chromium, nickel, molybdenum, or vanadium, in sufficient quantity to ensure that the specifiedminimum hardness of 48 HRC at the surface for nominal sizes up to and including 0.372 in., and 45 HRC for nominal sizesover 0.372 in., is met when spline keys and bits are hardened by quenching from the austenitizing temperature andtempered.
Note1: For plated spline keys and bits, all dimensions are before plating.
Note2: Bits are available, but lengths have not been standardized.
Designation: Product Name, Designation of the Standard, Nominal Key or Bit Size, Series, Protective Finish (if required) Ex: ASME B18.3, 0.111 Short Arm Series
Wrench: A mechanical hand tool which is used to hold, twist, or turn an object (such as a bolt or nut).