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

Superseded

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SPECIFICATION FOR METRIC SCREWS

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Superseded date: 30-09-2010

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Published date: 23-11-2012

Publisher: British Standards Institution

Table of Contents - (Show below) - (Hide below)

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

Abstract - (Show below) - (Hide below)

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.

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Committee	ACE/12
Development Note	Supersedes 74/70959 DC (10/2005) Reviewed and confirmed by BSI, December 2009. (11/2009)
Document Type	Standard
ISBN
Pages
Published
Publisher	British Standards Institution
Status	Superseded
Superseded By	BS 2A 260-2A 265:2010

Standards Referencing This Book - (Show below) - (Hide below)

BS 4500(1969) : LATEST
BS 3643(1963) : LATEST
DTD 904C : MAY 63	CADMIUM PLATING
BS 891:1940	Direct reading hardness test (rockwell principle)
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/in² (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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