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BS A260,A261,A262,A263,A264,A265(1976) : 1976 AMD 4065

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SPECIFICATION FOR METRIC SCREWS

Superseded date

30-09-2010

Published date

23-11-2012

Foreword
Specification
1 Scope
2 References
3 General requirements
4 Example of call up
5 Identification and marking
Tables
1 Sampling plan
2 Dimensions: pan head screws
3 Dimensions: 100 degree countersunk head screws
4 Material
5 Diameter/length codes
6 Hardness
Figures
1 Basic dimensions: pan head screws
2 Basic dimensions: 100 degree countersunk head screws

Give materials, dimensions, protective treatment, identification and marking, and part numbers for pan and 100 degree countersunk head screws having ISO metric screw threads. Primarily used on non-structural aerospace applications. Includes identification amd marking details. Illustrates basic dimensions: pan head screws, basic dimensions: 100 degree countersunk head screws.

Committee
ACE/12
DevelopmentNote
Supersedes 74/70959 DC (10/2005) Reviewed and confirmed by BSI, December 2009. (11/2009)
DocumentType
Standard
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS 4500(1969) : LATEST
BS 3643(1963) : LATEST
DTD 904C : MAY 63 CADMIUM PLATING
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BS 970-4:1970 Specification for wrought steels for mechanical and allied engineering purposes Valve steels
BS 2A 100:1968 Specification for general requirements for bolts and nuts of tensile strength not exceeding 180000 lbf/in<sup>2</sup> (125 hbar)
BS 1134-1:1972 Method for the assessment of surface texture Method and instrumentation
BS S 154:1976 Specification. 2½% nickel-chromium-molybdenum steel billets, bars, forgings and parts (880-1080 MPa: limiting ruling section 150 mm)
BS S148(1969) : 1969 SPECIFICATION FOR LOW NICKEL-CHROMIUM STEEL (BAR FOR THE MANUFACTURE OF FORGED BOLTS ONLY)
BS 2873:1969 Specification for copper and copper alloys. Wire
BS 2S 142:1977 Specification for 1% chromium-molybdenum steel billets, bars, forgings and parts (900-1100 MPa: limiting ruling section 40 mm)
BS 3S105(1969) : 1969 SPECIFICATION FOR CARBON STEEL - (BAR FOR THE MANUFACTURE OF FORGED BOLTS ONLY)
BS 427:1990 Method for Vickers hardness test and for verification of Vickers hardness testing machines
BS S 158:1977 Specification for 1% chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts
BS 4A 4:1966 Test pieces and test methods for metallic materials for aircraft. Metric units
BS 2S 147:1976 Specification for 0.5% nickel-chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts

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