Drills and reamers - Specification for the dimensions of countersinks and counterboresWhat is BS 328 5 Countersinks and counterbores about? BS 328 5 is the fifth part of the BS 328 multi series on drills and reamers. BS 328 5 specifies the dimensions of the following: Counterbores with morse taper shanks and detachable pilots Countersinks with parallel shanks Countersinks with morse taper shanks Who is BS 328 5 Countersinks and counterbores for? BS 328 5 on specifications for the dimensions of countersinks and counterbores is useful

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This Part of this British Standard specifies the colorimetric and photometric properties of materials and gives the preferred sizes for safety signs complying with the requirements of Part 1

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It specifies a method for the determination of the velocity of propagation of pulses of ultrasonic longitudinal waves in concrete