Specification for Hi-torque speed drive recess: dimensions and gauging for countersunk head fasteners

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

29-04-1977

Publisher

British Standards Institution

Foreword
1 Scope
2 General requirements

Defines the dimensions of the Hi-torque speed drive recess and of the driver tip envelope.

This British Standard specifies the dimentions of the Hi-torque speed drive recess and of the driver tip envelope.

Committee	ACE/12
DevelopmentNote	Supersedes 76/75413 DC and BS A230(1968) (10/2005) Reviewed and confirmed by BSI, April 2008. (03/2008)
DocumentType	Standard
Pages	4
PublisherName	British Standards Institution
Status	Current

15/30329889 DC : 0	BS A 266 TO 271 - BOLT, 100 DEGREES COUNTERSUNK HEAD, HI-TORQUE SPEED DRIVE RECESS, UNJF THREAD, SPLIT PIN HOLE OPTION, TITANIUM ALLOY, VARIOUS FINISHES, CLASSIFICATION: 80 TF/IN[2] (1100 MPA) AT TA/+315 DEGREES C
BS 2A 266 to 2A 271:2016+A1:2019	Aerospace Series. Bolt, 100° Countersunk head, Hi-Torque speed drive recess, close tolerance shank, UNJF thread, split pin hole option, titanium alloy, various finishes. Classification: R<sub>m</sub> 1100–1250 MPa (160 000–180 000 lbf/in<sup>2</sup>) at Ambient Temperature \| +315 °C

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Features

BS A 272:1977