1、I I I BSI 3A*i(107 62 W II624667 010II22L B W J I UDC 621.882.312.082.3 : 669.715 : 629.131 3 A. 107, November, 1962 B RIT1 S H STAN DARD S IN S TI TUT I ON INCORPORATED By CHARTER Telephone: MAYFAIR 9ooo B-H SIANDARDS HOUSE, 2 PARK STREET, LONDON, W.l Telegrums: STANDARDS. LONDON, W.1. BRITISH STAN
2、DARD SPECIFICATION FOR ALUMINIUM ALLOY NUTS (UNIFIED HEXAGONS AND UNIFIED THREADS) (ORDINARY AND SLOTTED) FOR AIRCRAFT FOREWORD SPECIFICATION SCOPE 1. This British Standard specifies the materials, dimensions and inspection procedure for aluminium alloy nuts with Unified hexagons and Unified threads
3、 for aircraft. It makes provision for ranges of ordinary and slotted nuts. GENERAL REQUREbENTS 2. The nuts shall comply with the relevant requirements of Part 1 of British Standard A.lOO, in respect of manufacture, screw threads, anticorrosion treatment, identification and marking. MATERIAL AND MANU
4、FACIURE 3. a. The nuts shall be machined from bars which comply with the latest issue of British Standard L.65. b. The nuts shall be hexagonal and chamfered on both faces as shown in Figs. 1 and 2. DIMENSIONS 4. All finished nuts shall conform to the dimensions and tolerances given in Table 1 or 2.
5、SCREW THREADS 5. The nuts shall have Unified threads of the form and class of fit specied in the relevant requirements of British Standard A.100, Part 1. ANTI-CORROSION TREAThEhT 6. All finished nuts shall be anodized. IDENTWICATION AND MARIUNG 7. All nuts shall be dyed green by an appropriate proce
6、ss. NOTE. Because of the use of chromic acid process for anodizing, the bolts will not necessarily be uniformly coloured after dyeing. INSPECTION PROCEDURE 8. The nuts shall be inspected in accordance with the relevant requirements of British Standard A.lOO, Part 2. I BSI 3A*107 b2 M Lb24bb9 010L222
7、 T Ed 3 A. 107, November, 1962 TABLE 1. DIMENSIONS OF ORDINARY NUTS 1 Xominal Size NO. 6-32 UNC NO. 8-32UNC No. 10-32 UNF %in UNF %in UNF %eh UNF UNF %in UNF 956 in UNF %in UNF 2 Decimal equivalent of nominal size in 0.1380 0.1640 0.1900 0.2500 0.3125 0-3150 0.4315 0-5oOo 0.5625 0.6250 F- 6-4 (Third
8、 Angle Projection) . t “1 Countersink 9C- 1200n one face only to major diameter of thread Fig. 1 34 Part reference I - Right-hand thread BP CP DP EP GP JP LP NP PP QP _. - Left-hand thread BPL CPL DPL EPL GPL JPL LPL NPL PPL QPL Width across flats max. in 0.250 0.312 0.344 0.433 0.500 0.562 0.688 0.
9、750 0.875 0.938 B min. in 0-245 0.307 0.339 0-431 0.493 0.554 0.679 0.741 0.866 0.929 7 Width across corncis C max. in 0.289 0.361 0.397 0.505 0.517 0-650 0.794 0.866 1.010 1,083 819 Thickness G max. in 0.125 0.155 0.167 0.200 0.250 0.312 0.375 0.437 0.500 0.662 min. in 0.115 0.145 0.157 0.190 0.240
10、 0.302 0.365 0.421 0.490 0.582 2 I I 3 A. 107, November, 1962 TABLE 2. DIMEMSIONS OF SLOTTED NUTS (Third Angle Projection) I size 1 , !- : in $6 in UNF 0.2500 ? in UNF 0.3759 %6 in UNF 0.3125 756 in UNFI 0.4375 ?6 in UNF( 0*5000 9/16 in UNF 0.5625 94 in UNTE: 0-6250 I ,-Countersink 90“- 12O0on this
11、face only to major K diameter of thread 7- = 1 Fig. 2 JS i LS ! NS : PS i max. -l- I ,in Es; 0-438 GS I Of100 0.562 0688 0.750 0.875 t QS1 i 0-938 I _. mill. in 0,431 0-493 0.554 0.679 0.741 0.866 0.929 - - 7 Width across C . - comers - maX. in 0.505 0.577 0.69 0.794 0.866 *I9 - - ThiCheSS G I - ._
12、max. I min. in , in 0.260 0.250 0.280 . 0.270 0.312 i 0.302 0.375 i 0.365 0.431 I 0,427 - I 1.010 ; 0.500 j 0.493 1.083 i 0.562 i 0.552 13 : 14 _I_ - 11 12 - 10 .- Lower face of ! nut tobottom Slot - Depth Width of slot L r_ - J! K _ _ _I approx. 1 min. max. max. i min. -1 in 1 in iniin; in 0.090 I
13、0.OW 0.100 0.170 ! 0.160 0.090 I 0-090 I 0.103 0.190 0.180 0.212 0.140 , 0.125 i 0.135 I 0.235 i 0.225 0.140 j 0.125 % 0-135 : 0.297 0.287 0.187 0.165 0.115 0.313 0.303 0.187 0.165 0-!75 i 0.375 i 0.365 I- 0.090 I 0.090 0.100 ! 0.222 NOTE. The slots may at the option of the manufacturer be made rect
14、angular, as in Fig. 2 above, or rounded. 3 I ElSI 3A*L07 62 I Lb24bb OLOL224 3 3 A. 107, November, 1962 APPENDIX B TABLE FOR CONVERSION OF INCHES TO APPROXIMATE MILLIMETRE EQUIVALENTS I I l in I mm 1 25.4 2 50.8 8-0 9.6 3 76.2 4 101.6 ?4 12.7 5 127.0 14.3 G 152.4 36 7 I 177.8 8 I 203.2 ?& 15.9 34 19
15、.1 7/8 22.2 9 1 228.6 I- w I 10 254.0 I I I This British Standard, having been approved by the Aircraft Industry Standards Committee and endorsed by the Chairman of the Engineering Divisional Council, was published under the authority of the General Council of the Institution on 8th November, 1962.
16、The Institution desires to call attention to the fact that this British Standard does not purport to include all the necessary provisions of a contract. British Standards are revisseed, when necessary, by the issue either oj amendment slips or oj revised editioiis. It is inportant that risers oj Bri
17、tish Standards shordd ascertan that they are in possession of the latest amendmertts OP editions. The following B.S.I. references relate to the work on this standard: Committee reference ACE/l2. Draft for comment AB (ACE) 5544. - Printed in England by Gaylard & San Lid., London, S.E. 14 G5625 2500li
18、 1162 AMD 4696 Amendment No. 1 published and effective from 29 March 1985 to British Standard 3A.107 : 1962 (Aerospace Series) Aluminium alloy nuts (Unified hexagons and Unified threads) (ordinary and slotted) for aircraft Revised text Foreword. Delete L.65 Aluminium - copper - magnesium - silicon -
19、 manganese alloy bars and extruded sections (solution treated and precipitation treated) and substitute L.168 Specification for bars and extruded sections of aluminium - copper - magnesium - silicon - manganese alloy (solution treated and artificially aged) (not exceeding 200 mm diameter or minor sectional dimension). Clause 3. Material and manufacture. In line 2, delete 2.65 and substitute L.168. 8503-O-1.4k-B ACE112 I
