SPECIFICATION FOR HEXAGONAL CASTLE NUTS (OF CLASS 3B UNJ THREAD)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-1974

Publisher

British Standards Institution

NO CONTENTS SECTION

Committee	ACE/12
DevelopmentNote	Supersedes 17/30358691 DC. 1974 Edition Re-issued in September 2017 & incorporates AMD 1 2017. (10/2017)
DocumentType	Standard
Pages	6
PublisherName	British Standards Institution
Status	Current
Supersedes	BS A242-245(1974) : DUPLICATE RECORD 17/30358691 DC : 0

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
BS A254-259(1976) : 1976	HEXAGONAL HEAD TITANIUM ALLOY BOLTS 160000 LBF/IN[2] (1100 MPA)