BS 2A 266 to 2A 271:2016+A1:2019
Current
The latest, up-to-date edition.
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: Rm 1100–1250 MPa (160 000–180 000 lbf/in2) at Ambient Temperature | +315 °C
Hardcopy , PDF
English
29-03-2019
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Foreword
1 Scope
2 Normative references
3 General requirements
4 BS part number
5 Indentification and marking
Bibliography
This British Standard specifies the materials, dimensions, finish and inspection requirements for titanium alloy bolts with 100° countersunk heads and UNJF threads for aerospace use.
| Committee |
ACE/12
|
| DevelopmentNote |
Supersedes BS A266-271(1977) & 15/30329889 DC. (03/2016)
|
| DocumentType |
Standard
|
| ISBN |
9780539008968
|
| Pages |
20
|
| ProductNote |
This standard also refer to ASD-STAN prEN ,6118,ASD-STAN prEN 6117, Def Stan 00-970, SAE ITC RS678, Consolidate version now available for this standard.
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This British Standard specifies the materials, dimensions, finish and inspection requirements for titanium alloy bolts with100° countersunk heads and UNJF threads for aerospace use.NOTE The values in Imperial British units are to be regarded as the standard. CAUTION. A269has cadmium as a plating material, which has been restricted and/or banned for use in many countries owing to environmental and health concerns; they should not be used in new product designs. Local officials should be consulted about any concerns on using cadmium‑plated parts. In addition, cadmium plating on titanium parts has been documented to result in stress corrosion and also solid metal embrittlement (SME) when exposed to relatively low temperatures. Accordingly, BS A 270 has been introduced as a replacement. When considering the use of cadmium plated titanium bolts, attention is drawn to DefStan00‑970Pt.1/12Section4Leaflet8, which recommends certain limitations on their use.
| BS A 346:2000 | UNJ threads. General requirements and limit dimensions |
| BS A242,A243,A244,A245(1974) : 1974 | SPECIFICATION FOR HEXAGONAL CASTLE NUTS (OF CLASS 3B UNJ THREAD) |
| BS EN 3813:2013 | Aerospace series. Titanium alloy TI-P64001 (Ti-6Al-4V). Annealed. Bar and wire for forged fasteners. D<sub>e</sub> ≤ 50 mm |
| BS A 273:1978 | Specification for gauging practice for 100° countersunk head fasteners for flushness control |
| DEFSTAN 01-5/17(2011) : 2011 | FUELS, LUBRICANTS AND ASSOCIATED PRODUCTS |
| BS EN 2808:1997 | Anodizing of titanium and titanium alloys |
| ISO 8080:1985 | Aerospace Anodic treatment of titanium and titanium alloys Sulfuric acid process |
| SAE AS 5272 : 2016 | LUBRICANT, SOLID FILM, HEAT CURED, CORROSION INHIBITING, PROCUREMENT SPECIFICATION |
| BS A 272:1977 | Specification for Hi-torque speed drive recess: dimensions and gauging for countersunk head fasteners |
| DTD 942 : AUG 73 | ANODIZING OF TITANIUM AND TITANIUM ALLOYS |
| BS EN 2133:2010 | Aerospace series. Cadmium plating of steels with specified tensile strength ≤ 1450 MPa, copper, copper alloys and nickel alloys |
| SAE AMS 03-19 : 2015 | ELECTRO-DEPOSITION OF CADMIUM |
| BS A101(1969) : 1969 | GENERAL REQUIREMENTS FOR TITANIUM BOLTS |
| BS 3TA28(2009) : 2009 | AEROSPACE SERIES - SPECIFICATION FOR FORGING STOCK AND WIRE OF TITANIUM-ALUMINIUM-VANADIUM ALLOY (TENSILE STRENGTH 1100-1300 MPA) (LIMITING RULING SECTION 20 MM) |
| BS M 58:1986 | Specification for anodic coating of titanium and titanium alloys by the sulphuric acid process |
| SAE AMS 4967 : 2014 | TITANIUM ALLOY, BARS, WIRE, FORGINGS, AND RINGS 6.0AL - 4.0V ANNEALED, HEAT TREATABLE |
| ISO 3161:1999 | Aerospace — UNJ threads — General requirements and limit dimensions |
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