GB/T 1438.4-2008
ActiveTaper shank twist drills - Part 4: The types and dimensions extra-long for Morse taper shank twist drills
锥柄麻花钻 第4部分：莫氏锥柄超长麻花钻的型式和尺寸
Application Summary AI generated
This standard specifies the types and dimensions of extra-long twist drills with Morse taper shanks. It is applied in the manufacturing industry for drilling deep holes in metal workpieces where standard-length drills are insufficient, such as in automotive, aerospace, and heavy machinery production. The standard ensures interchangeability and compatibility with Morse taper drill chucks or spindles.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.