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BS 3777:1964

Specification for screw thread measuring cylinders

Standard Details

Grade A (pitch-line) and Grade B (grouped) measuring cylinders for checking external screw threads of Unified and ISO inch, Whitworth, B.A. and ISO metric form by means of pitch diameter measuring machines. Bases for the diametral tolerances. Relative merits of grades A and B. Measuring ranges, material and finish, form and general dimensions, accuracy and identification; tables of nominal diameters and associated P values for Grade A cylinders; limits of size for Grade B cylinders.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 3777:1964
Document Year: 1964
Pages: 16
  • Section Volume:
  • GBM09 Metrology (GMB09)

Life Cycle

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Confirmed
BS 3777:1964
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