1、BSI 3A*l108 62 I Lb24bb 0101i22b 7 m UDC 621.582.711.08?.3 : 669.14 : 629.131 -. . . . I BRITISH STANDARD SPECIFICATION FOR STEEL BOLTS (UNIFIED HEXAGONS AND UNIFIED THREADS) WITH CLOSE TOLERANCE- SHANKS FOR AIRCRAFT% FOREWORD This revision of British Standard 2A.IOS : 1956 has been prepared to rela
2、te the standard to the relevant requkments of British Standard A.100. Additionayy, provision has been made for the use of alternative materials for forgeeci bolts. un,;.y.* .- S.95 55 ton, 1% per cent . nickel-chromium-molybdenum steel .i : . .- . :. . .r: -, . .- . .* i . - -. 5.102 Carbon-molybden
3、um steel - ;I . .j: =* I. S.105 Carbon steel - s.114 55 ton manganese-molybdenum steel S.116 55 ton carbon steel i : Z 0 . i. i. . S.117- 55 ton, per cent chromium steel. i !,I i 2; i: % a ; ., S.147 Nicliel-cliroiiiiuiii-ilolybdenutn steel (bar for the iiiaiiuacluiP i.-. . -. S.148 S.149 S.154 S.15
4、8 .i . of forged bolts only) L. - ., . . . - . *.- z Low nickel-cliroiiiium steel (bar for the iiiaiiuacttire o oiEetl bolts only) 1.75 per celit nickel-cliromiutii-iiiolbdetiuiii steel 2% % nickel-cliroiniuiii-riiolybdeiiuiii steel billets. bars, forgiiigs and parts (880 - i O80 hWa: liniitirig rul
5、iiig sectin 1 SO win) 1 Z chroiiiiuiii-iiiolybdeiiurii steel bars for the iiiaiiufacture o forged bolts and forged nuts . . I NOTE 1. The values in British units are to be regarded as the standard. A table is given in the appendix to provid2 a ready means of clcolathg the approximate millirnetre equ
6、ivalents Of the inch dimensions. More accurate conversions should be based on the tables in B.S. :o. r. 4. NOTE 7 In place of the customary, but incorrect, use of the ton 3s a unit of rorc:. the unit called a ton force (abbreviation toc0 has ken used in this standord. It is the force which. when act
7、ing on a body of mss one ton, gives on acceleration equal io that of standird gavify. i SPECIFICATION SCOPE 1. This British Standard specifies the materials, dimen- sions, finish and inspection requirements for steel bolts with Unified hexagons, Unified thrads rind close tolerance shanks for aircraf
8、t. GF3lEMLREQ-S 2. The bolts shall comply with the relevant requirements of Part 1 of British Standard A.10 in respect of manufac- turc, screw threads, anti-corrosion treatment, identification and marking. hUIERlAL AND MANUFACTURE 3. u. The bolts sha be manufactured by one of the following methods:
9、(i) hiachincd from bright drawn bars which comply with the latest issue of one of the following British Standarcis. A . s.95 or S.114 or S.116 or S.117 or s.154 . (i) Forged from materid which complies with the latest issue of one of the following British Standards: or S.105 - or S.147 . or S.148 or
10、 S.149 - or S.158 b. in the huily hemreated condition, the m O4 5D 0.5 I 6D i 06 7D 0.7 8D O e8 9D 1OD 11D 12D 13D 14D 15D 16D 17D 18D 19D 20D 21D 22D 23D 24D 25D BSL 3A*&O 62 M 3624bb 01103227 2 B 3 A. 108, June, 1962 4 0.9 1.0 +O -0.03 in 0.143 0.193 0.293 0.393 0-493 0,593 0693 0.793 0.893 0,993
11、1.093 1.1 1.193 1.2 1.293 1.3 j 1,393 1.4 1.493 1.5 j 1,593 1-6 1,693 1.7 j 1.793 1.8 I 1.893 1.9 f 1.993 200 2.093 21 1 2.193 2- I 2.293 - 2.3 2.4 2 -5 2.393 2,493 2.593 E +0.04 -0 ul 0.55 0.60 0-70 0.80 0.90 1 *o0 1.10 1.20 1.30 1.40 1-50 1.60 1.70 1-80 1.90 2-00 2.10 2.20 2-30 2-40 2.50 2-60 2.70
12、 2.80 2-90 3-00 *See Clause 4c. Bolts below the heavy line may not be readily available in large quantities because of limitations in manufacture by forging. .U31 3A*lO b2 I 162qbb9 Oit01230 9 m- 3 A. 1438, June, 1962 TABLE 2 (Corrtiiiued) BEARING LENGTH L, CLAMPING LENGTH iM AND OVERALL LENGTH E -
13、%in UNP No min. in IE 1 0.1 ?E i 0.2 3E f 0.3 4E 1 0.4 5E 0.5 6E 7E SE 9E 1 OE 11E 12E 13E 14E 15E 16E 17E 1 SE 19E 20E 21E 22E 23E 24B 25E 26E 27E 2SE 29E 30E 0.6 O -7 0.8 0.9 1 -0 1.1 1 *2 1 -3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2 *2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 M i0 -0.03 in 0.201 0.301 0.401 0.5
14、01 0.601 0501 0.801 0.901 1.001 1.101 1.201 1-301 1.401 1.501 I601 1.701 1.801 1.901 2.001 2,101 2.201 2.301 2.401 2.501 2601 2.701 2.801 2.901 3.001 3-101 E +0.04 -0 in 0.70 0.80 0.90 1-00 1.10 1 a20 1 a30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2-10 2.20 2-30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3-10 3.2
15、0 3.30 3-40 3-50 3.60 Part No. 1G 2G 3G 4G 5G 6G 7G SG 9G 10G 11G 12G - 13G 14G 15G 16G 17G 1 SG 19G 20G 21G 22G 23G 24G 25G 26G 27G 2SG 29G 30G 31G 32G 33G 34G 35G 36G 37G * See Clause 4c. *L min. in 0.1 0 *2 0.3 0.4 O *5 O .6 0.7 0.8 0.9 1.0 1.1 1 *2 1 *3 1.4 1.5 1.6 1 *7 1.8 1 -9 2.0 2.1 2.2 2.3
16、2.4 2.5 2.6 2.7 2.8 2.9 3-0 3 *1 3 e2 3 -3 3.4 3.5 3.6 3.7 M i0 -0.03 in 0.213 0.313 0.413 0.513 0.613 0.713 0.813 0.913 1.013 1,113 1.213 1.313 1.413 1.513 1.613 1,713 1.813 1,913 2.013 2.113 2.213 2.313 2.413 2.513 2.613 2.713 2.813 2.913 3.013 3.113 3.213 3-313 3-413 3.513 3.613 3,713. 3.813 E io
17、.04 - -0 in 0.75 0.85 0.95 1-05 1.15 1.25. 1.35 1.45 1.55 1.65 1.75 1-85 1.95 2.05 2.15 2.25 2.35 2.45 2.55 2.65 2.75 2.85 2-95 3005 3-15 3.25 3.35 3-45 3.55 3.65 3.75 3.85 3-95 4-05 4.15 4.25 4.35 Bolts below the heavy line may n_ot-bereadily available in large quantitiesbecause of limitations in m
18、anufacture by forging. ES1 3A*108 62 E Lb2qbb 0101231 O 3 A, 108, June, 1962 TABLE 2 (Conrimefi.1 BEARING LENGTH L, CLAMPING LENGTH M AND OVERALL LENGTH E Part No. 1J 23 35 45 5J 6J 75 8J 9J 1OJ 11J 125 135 14J 15J 16J 17J 185 19J 205 21J 22 J 235 24J 253 265 27J 2SJ 29J 305 315 32J 33J 345 353 G %i
19、n UNP “4 min. in 0.1 0.2 On3 0.4 0.5 0.6 0.7 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1 -7 1 *8 1 *9 2 *o 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.9 310 3.1 3.2 3 u3 3.4 3.5 0.8 2.8 - M +o . -0.03 in 0.213 0.313 0,413 0,513 0-613 0.713 0.813 0.913 1.013 1.113 18213 1.313 1.413 1.513 1613 1.713 1,913 2.013 2.113 2.213 2
20、.313 2.413 2.513 2.613 2.713 2.913 3.013 3.113 3.213 3.313 3.413 3.513 3.613 1.813 2.813 E t0.04 in 0.95 1.05 1.15 1 *25 1.35 1.45 1.55 165 1 675 -0 0.85 1.85 1 *95 2.05 2.15 2.25 2.35 2.45 2.55 2-65 2.75 2-85 2.95 3.05 3.15 3.25 3.35 3.45 3.55 3.65 3.75 3.85 3.95 4.05 4.15 4.25 Part NO * 1L 2L 3L 4
21、L 5L 6L 7L 8L . 9L - 10L 11L 12L 13L 14L 15L 16L 17L 1 SL 19L ZOL, 21L 22L 23L 24L 25L 26L 27L 28L 29L 3OL 31L 32L 33L 34L 35L 36L 37L 38L 39L 40L 75s in UNF *L min. in 0.1 0.2 0-3 0.4 0.5 043 0.7 0.9 . 1.0 1 *1 1.2 1 -3 1.4 1 *5 1.6 1 *7 1.9 2.0 2.1 2.2 2.3 2.4 2.5 216 2.7 2.9 310 3.1 3.2 3.3 3.4 3
22、.5 3.6 3.7 3.9 4.0 0.8 i .a 2.8 3.8 - M +O -0.03 in 0.230 0,330 0.430 0430 0630 0,730 0.930 1.030 1.130 1.230 1,330 1.430 1,530 1630 1.730 1,930 2.030 2.130 2.230 2.330 2.430 2,530 2630 2,730 2.830 2.930 3.030 3.130 3.230 3.330 3-430 3.530 3.630 3,730 3.930 4.030 4.130 0,830 1-830 3,830 * See Clause
23、 412. E +O*O4 -0 in 0.95 1.05 1-15 1.25 1 -35 1-45 1.55 1.65 1 e75 1.85 1.95 2.05 2.15 2.25 2-35 2.45 2.55 2-65 2-75 2.85 2.95 3.05 3.15 3-25 3.35 3145 3-55 3.65 3.75 3.85 3.95 4-05 4015 4.25 4.35 4-45 4.55 4.65 4.75 4.85 in 1N : 0.1 2N 0.2 3N 4N 5N 6N -7N 8N 9N 1 OM 11N 12N 13N 14N 15N 16N 17N 18N
24、19N 20N 21N 22N 23N 24N 25N 26N 27N 28N 29N 30N 31N 32N . 33N 34N 35N 36N 37N 38N 39N 40N 41N 42N 43N 44N 45N 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -0 1.1 1 *2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2-7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.9 4.0 4.1 4-2 4-3 3.8 in I ir, 0.230 I 1.05 0.
25、330 0.430 0.550 0.650 0.730 0.930 1.030 1.130 1,230 1330 1.430 1.530 1.630 1.730 1.930 2.030 2.13c 2.230 2.330 2,430 2.530 2.630 2.730 2.930 3.030 3.130 3.230 3.330 3.430 3.530 3.630 3,730 3.830 3.930 4.030 0.830 1.830 2.830 1 .l5 1.23 1.35 1.45 1.33 1 .i5 1.93 2.05 2.15 2.25 2.35 2.45 2.55 2.65 2.7
26、5 2.85 2.95 3.05 3.15 3.25 3.35 3.45 335 3.65 3.75 3.85 3.95 4.05 4.15 4.25 4-35 4.45 4.53 4.65 4.75 1.65 i ,a5 4.85 4.130 4.95 4.230 , 5.05 4.330 I 5.15 4,430 5.25 4.4 4.530 5.35 4.5 i 4.630 , 545 Bolts below the heavy line may not be readily available in large quantities because limitntions in man
27、ufacture by forging. BSI 3A*308 62 3624669 0303232 2 APPENDIX TABLE FOR CONVERSION OF INCHES TO APPROXIMATE MILLIMETRE EQUIVALENTS in 0- mm 6.4 7.9 9.5 - 11.i . 12.7 14.3 15.9 19-1 22.2 This British Standard, having been approved by the Aircraft industry Standards Committee and endorsed by the Chair
28、man of the Engineering Divisional Council, was published under the authority of the General Council of the institution on 4th June, 1962. The Institution desires to call attention to the fact that this standard does not purport to include all the necessary provisions of a contract. British Standards
29、 are revised, when necessary, by the issue either of anrendnient slips or of revised editiotts. It is iitlportatrt that users of British Statidards sfiorild nscertaitz that they are in possession of the latest nniendtnents or edtiotis. The following B.S.I. references relate to the work on this stand
30、ard: Committee reference ACE/I2. Draft for comment AB (ACE) 2149. Printed in Englnnd by Gaylard & Son Lid., London, S.E.iJ mai7 :m16/62 BSI 3A*1OB b2 16211669 0101233 bl PD 461 Amendment No. 1, published 11 October, 1962 to British Standard 3A.108 :1962 Steel bolts (Unified hexagons and Unified thre
31、ads) with close tolerance shanks for aircraft Corrigendum Table 1. in Column 6, delete the entry for bolt size No. 10 and substitute: 0.377 to British Standard 3 A.108:1962 Steel bolts (Unified hexagons and Unified threads) with close tolerance shanks for aircraft Revision Foreword. Delete reference
32、 to British Standards S.94 and S.115. Clause 3, u (i). Delete 3.94 and or before 3.95. Clau& 3, a (2). Delete or S.115. I -_ -i - - - , 1 . - BSI 3AxlOB b2 M 1b24bb 0101234 b * AMD 2115 hieiidiiieiit Slip No.3, published 29 October 1976 to British Standard 3A.108 : 1962 (Aerospace Series) Steel bolt
33、s (Uiied hexagons aiid UniGd fhmbaq with close tolerance siiaiiks for aircraft Revised text Foreword, In the list of reference standards delete S.103 Low nickel- chromium steel. At the end of the list insert the following: S.147 Nicliel-cliroriiiutii-iiolybdenum steel (bar for the inaiiutaciuri of f
34、orged bolts only) S.148 Low nickel-cliromium steel (bar for the tnanufacture of forge bolts only) S.149 1 e75 per cent iiickel-cliromiuni-niolybdeIiuni steel S.154 2% % nickel.cliromiuiii-iiiolybdeniini steel billets, bars, forgiil and parts (880 - 1080 hlR: liniiting ruling section 1 50 iiiiii) S .
35、t 1 I chromium-niolybdenurn steel bars for the manufacture o forged bolts and forged nuts Clause 3a. In item (i), after S.117 and on a new line insert or S. 154 In item (ii) delete or S.103. ! After S.105 insert the following: or S.147 or S.148 or S.149 or S .i. At the bottom of the page insert the
36、followiig footnote: t In course of preparation. 7610-2k-B Gr O. AMD 5390 Amendment No. 4 published and effective from 30 June 1988 to British Standard 3A. 108 : 1962 (Aerospace Series) Steel bolts (unified hexagons and unified threads) with close feren tolerance shanks for aircraft Revised text Fore
37、word (as amended by Amendment Nos. 2 and 3). In the list of r e standards, delete S.96 55 ton 2% per cent nickel-chromium-molybdenum steel. At the end of the list of reference standards, delete S . . . f and substitute 3.1 58, and delete the corresponding footnote. Clause 3a (as amended by Amendment
38、 No. 3). In item (i), delete or S.96. At the end of item (i), insert the following note: NOTE. S.96 materialmay be used until stocks are exhausted. In item (U), delete or S . . .+ and substitute or S.158. Clause 3b. In line 5, delete (68 kgf/mm2) and substitute (664 MPa). In line 7, delete (87 kgf/mm2) and substitute (850 MPa). In line 9, delete (102 kgf/mm2) and substitute (1003 MPa). In line 12, delete (6 kgf m) and substitute 54 J. I 8806-O-1.3k-B ACE112
