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1、BRITISH STANDARD BS SP 28 and 29:1951 (Replacing A.G.S. 167, 502, and 859) Incorporating Amendment Nos. 1, 2 and 3 Specification for Solid taper pins for aeronautical purposes UDC 621.886.54:629.13 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+00:
2、00 2006, Uncontrolled Copy, (c) BSI BS SP 28 and 29:1951 These British Standards, having been approved by the Aircraft Industry Standards Committee and endorsed by the Chairman of the Engineering Divisional Council, were published under the authority of the General Council of the Institution on 30 M
3、arch 1951 BSI 04-2000 ISBN 0 580 34457 6 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
4、Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendm
5、ents issued since publication Amd. No.Date of issueComments 1274October 1951 2960January 1958 1798August 1975Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS SP 28 and 29
6、:1951 BSI 04-2000i Contents Page 1Scope1 2Material1 3Dimensions1 4Finish1 5Protective treatment1 6Identification1 Figure 1 Solid taper pin2 Figure 2 Alternative form of pin with conical end at the option of the manufacturer2 Table 1 British Standard numbers and materials1 Table 2 Dimensions and part
7、 references2 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
8、 SP 28 and 29:1951 BSI 04-20001 1 Scope These British Standards specify the materials, dimensions and finish of solid taper pins for aeronautical purposes. 2 Material The pins shall be manufactured from the appropriate material specified in Table 1. 3 Dimensions The pins shall conform to the dimensi
9、ons and limits specified in Table 2. The nominal size of the pin is the nominal fractional diameter at the small end. The large end of the pins shall be domed in shape, or, at the option of the manufacturer, may be in the form of a cone as shown in Figure 2. The small end of the pins shall be machin
10、ed but may be of any suitable form, at the option of the manufacturer. 4 Finish The pins shall have a smooth machined or ground finish and shall be free from defects. 5 Protective treatment Steel pins complying with BS SP 28 shall be cadmium plated in accordance with Ministry of Supply aircraft proc
11、ess specification D.T.D. 9041). 6 Identification The pins shall be identified for ordering by the number of the British Standard as shown in Table 1, together with the appropriate part reference shown in Table 2: for example, a 1/8 11/2in. pin in stainless steel is BS SP 29 H.12. Table 1 British Sta
12、ndard numbers and materials 1) Latest issue. British Standard Number Material DescriptionsSpecifications BS SP 28High tensile steel BS S 114 or BS S 96 BS SP 29stainless steelBS S 80a a Latest issue. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+0
13、0:00 2006, Uncontrolled Copy, (c) BSI BS SP 28 and 29:1951 2 BSI 04-2000 Table 2 Dimensions and part references Figure 1 Solid taper pinFigure 2 Alternative form of pin with conical and at the option of the manufacturer Taper.1 in 48 (1/4 in. per foot) on diameter. Tolerance on taper. 0.0005 in. per
14、 inch. Tolerance on length B.Up to and including 2 in. 0.015 in. Above 2 in. up to and including 4 in. 0.04 in. Diameter at small end A in.Standard length B, in inches, and part reference nom.max.min. 1/23/4 111/4 11/2 13/4221/234 1/16 0.06350.0615E4E6E8E10E12 3/32 0.09480.0928G4G6G8G10G12G14G16 1/8
15、 0.12600.1240H4H6H8H10H12H14H16H20 5/32 0.15720.1552K6K8K10K12K14K16K20K24 3/16 0.18850.1865L6L8L10L12L14L16L20L24L32 1/4 0.25200.2480N6N8N10N12N14N16N20N24N32 5/16 0.31450.3105P14P16P20P24P32 3/8 0.37700.3730R16R20R24R32 Licensed Copy: London South Bank University, London South Bank University, Sat
16、 Dec 09 03:18:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:18:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS SP 28 and 29:1951 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution
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