1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2003 5 31 KS W 1557 KS W 1557： 2003 (2013 ) W 1557： 2003 ( ) ( ) ( ) ( ) ( ) ： ： 2003 5 31 ： 2013 9 4 2013-0393 ： ： ( ) ( 02 509 7287) . 7 5 , . ICS 49.040.20 KS + W 1557： 2003(2013 ) Aerospace Shear, cross recessed head screws 1. (Fsu) 656 MPa(95 ksi) + .
2、( ) . 1.1 . 2. . . AMS 6322 Steel Bars, Forgings, and Rings 0.50Cr 0.55Ni 0.25Mo(0.38 0.43C)(SAE 8740) UNS G87400 AMS 6382 Steel, Bars, Forgings, and Rings 0.95Cr 0.20Mo(0.38 0.43C)(SAE 4140) Annealed(UNS G41400) AMS 6415 Steel, Bars, Forgings, and Tubing 0.80Cr 1.8Ni 0.25Mo(0.38 0.43C)(SAE 4340)(UN
3、S G43406) SAE 4340, UNS G43406 AMS 6448 Steel, Bars, Forgings, and Tubing 0.95Cr 0.22V(0.48 0.53C)(SAE 6150) UNS G61500 AMS 6484 Steel, Bars, Forgings, and Tubing 0.80Cr 1.8Ni 0.25Mo(0.38 0.43C) SAE 4340 Normalized and Tempered UNS G43400 AMS H 6875 Heat Treatment of Steel Raw Materials AMS QQ P 416
4、 Plating, Cadmium(Electrodeposited) AMS S 5000 Steel, Chrome Nickel Molybdenum(4340) Bars, and Forging Stock ANSI/ASQC Z1.4 Sampling Procedures and Tables for Inspection by Attributes ASTM E1444 Standard Practice for Magnetic Particle Examination MIL HDBK 5 Metallic Materials and Elements for Aerosp
5、ace Vehicle Structure MIL S 7742 Screw Threads, Standard, Optimum Selected Series： General Specification For MIL S 8879 Screw Threads, Controlled Radius Root with Increased Minor Diameter： General Specification For NAS 623 Screw, Machine, Aircraft, Pan Head, Cross Recess, Short Thread, 160 000 psi A
6、lloy Steel NASM 9006 Recess Cross, Low Torque Drive, Dimensions and Gage Dimensions For 3. 1 KNAS 623 + 1 4. 4.1 2. , . 4.2 . W 1557： 2003 2 4.3 . , ( ) 0.25 mm(0.010 in) . , , . 5. 5.1 MIL S 7742 MIL S 8879 . 0.03 mm(0.001 in) . 5.1.1, 5.1.2 5.9 . 5.1.1 2 . , , . 5.1.2 . 5.1.2 . 0.5 . . 2 . , . 5.2
7、 AMS H 6875 . 5.3 . 5.4 5.4.1 6 12.70 mm(0.500 in) 2 , 12.70 mm(0.500 in) 1 . 3 % . 5.4.2 6 . 85 100 % . 5.5 , 6.35 mm(1/4 in) ( ) , 1 . 1 mm(in) 25.4 mm(1 in) mm(in) 4.1(0.190 0) 0.102(0.004 0) 6.4(0.250 0) 7.9(0.312 5) 0.076(0.003 0) 9.5(0.375 0) 11.1(0.437 5) 0.064(0.002 5) 12.7(0.500 0) 0.051(0.
8、002 0) 5.6 . 5.6.1 , ( ) . 19015 (37525 ) 3 . W 1557： 2003 3 DD/2 5.7 5.7.1 6.3 , 2 . 2 mm(in) ( ) kN(lbf) 4.2 (0.164 0) 17.8 (4 010) 4.8 (0.190 0) 23.9 (5 380) 6.4 (0.250 0) 41.4 (9 300) 7.9 (0.312 5) 64.9 (14 600) 9.5 (0.375 0) 93.4 (21 000) 11.1 (0.437 5) 127.0(28 600) 12.7 (0.500 0) 166.0 (37 30
9、0) 14.3 (0.562 5) 210.0 (47 200) 15.9 (0.625 0) 259.0 (58 300) 19.1 (0.750 0) 373.0 (83 900) 22.2 (0.875 0) 508.0 (114 200) 25.4 (1.000 0) 664.0 (149 200) 28.6 (1.125 0) 841.0 (189 000) 31.8 (1.250 0) 1 036.0(233 000) 38.1 (1.500 0) 1 494.0 (335 800) ： SA S = 2 656 MPa(95 ksi) 656 MPa(95 ksi)： MIL H
10、DBK 5 A = mm2(in2) 6.4(0.250 0) , 6.4 mm(0.250 0 in) . 5.7.2 6.4 , HRC 36 40 . 5.8 6.5 , 3 . 3 25.4 mm(1in) mm(in) 32 0.08(0.003) 28 0.08(0.003) 24 0.08(0.003) 20 0.10(0.004) 18 0.10(0.004) 16 0.13(0.005) 14 0.15(0.006) 12 0.18(0.007) D/2 D W 1557： 2003 4 5.9 5.9.1 a) , . . b) . c) . d) , , , , . 5.
11、9.2 a) 6.7 , . . 4 3 . . 1 . b) , , 4 . 4 mm(in) 7.9(0.312 5) 9.6(0.375 0) 11.1(0.437 5) 12.7(0.500 0) mm(in) 0.13(0.005) 0.15(0.006) 0.18(0.007) 0.20(0.008) 0.51(0.020) 0.61(0.024) 0.71(0.028) 0.81(0.032) 0.25(0.010) 0.31(0.012) 0.36(0.014) 0.41(0.016) c) 4 , . 1/2 1/2 2 d) 1 . W 1557： 2003 5 4 . (
12、 ) . 4 . . . - . 4 . - 6.35(.25)K 2.54(.10)K 4 . . 4 . . 2.54(.10)K .(K = ) . 4 . 1 5.9.3 a) . b) 2 4 . 4 , . c) . 2 , , . 4 . . 2.54(0.10)K (K= ) 4 . 6.35(0.25)K 2.54(0.10)K 4 . . 4 . 4 . ( ) . 4 . W 1557： 2003 6 6. 6.1 , . 6.2 , , . MIL S 7742 MIL S 8879 . 6.3 3 . . 6.4 . 4.2 mm(0.164 0 in) . HRC
13、36 40 . , . . 6.5 . 3 . 5 % . 100 3 . 6.6 ASTM E1444 . ANSI/ASQC Z1.4 (AQL) 0.035 % , . . 6.7 6.35 mm(1/4 in) . 6.4 mm(0.250 0 in) , 4.8 mm(0.190 0 in) 20 30 . ASTM E1444 . 4.8 mm(0.190 0 in) 5 15 . , 6.7.3 . 6.7.1 70 80 (160 180 ) ( 50 %, 50 % ) . , . 6.7.2 , 100 150 . W 1557： 2003 7 T UU0.03(.001)
14、 0.03(.001) HRC63( ) : 1,241MPa (180ksi)TD ()E 3 5 mm(in) D E 7.62(0.03) T 0.03(0.001) U 0.03(0.001) 4.2 (0.164 0) 4.19(0.165 0) 4.17(0.164 3) 12.70(0.50) 4.17(0.164) 2.08(0.082) 4.8 (0.190 0) 4.85(0.191 0) 4.83(0.190 3) 13.97(0.55) 4.83(0.190) 2.41(0.095) 6.4 (0.250 0) 6.38(0.251 0) 6.36(0.250 3) 1
15、5.75(0.62) 6.35(0.250) 3.18(0.125) 7.9 (0.312 5) 7.96(0.313 5) 7.95(0.312 8) 19.05(0.75) 7.92(0.312) 3.96(0.156) 9.5 (0.375 0) 9.55(0.376 0) 9.53(0.375 3) 20.57(0.81) 9.53(0.375) 4.78(0.188) 11.1 (0.437 5) 11.14(0.438 5) 11.12(0.437 8) 23.88(0.94) 11.13(0.438) 5.56(0.219) 12.7 (0.500 0) 12.73(0.501
16、0) 12.71(0.500 3) 25.40(1.00) 12.70(0.500) 6.35(0.250) 14.3 (0.562 0) 14.30(0.563 0) 14.28(0.562 3) 28.45(1.12) 14.27(0.562) 7.14(0.281) 15.9 (0.625 0) 15.89(0.625 5) 15.87(0.624 8) 31.75(1.25) 15.88(0.625) 7.92(0.312) 19.1 (0.750 0) 19.06(0.750 5) 19.04(0.749 8) 35.05(1.38) 19.05(0.750) 9.53(0.375)
17、 22.2 (0.875 0) 22.24(0.875 5) 22.22(0.874 8) 39.62(1.56) 22.23(0.875) 11.13(0.438) 25.4 (1.000 0) 25.41(1.000 5) 25.39(0.999 8) 45.97(1.81) 25.40(1.000) 12.70(0.500) 28.6 (1.125 0) 28.59(1.125 5) 28.57(1.124 8) 50.80(2.00) 28.58(1.125) 14.27(0.562) 31.8 (1.250 0) 31.76(1.250 5) 31.74(1.249 8) 58.67
18、(2.31) 31.75(1.250) 15.88(0.625) 34.9 (1.375 0) 34.94(1.375 5) 34.92(1.374 8) 63.50(2.50) 34.93(1.375) 17.48(0.688) 38.1 (1.500 0) 38.11(1.500 5) 38.09(1.499 8) 66.55(2.62) 38.10(1.500) 19.05(0.750) 0.03(0.001) ： 1.241 MPa(180 ksi) 0. (0. 01) HRC63 ( ) D() W 1557： 2003 8 7. 7.1 , , ANSI/ASQC Z1.4 , (AQL) . (Major) 1.5 % A(Minor A) 2.5 % B(Minor B) 4.0 % 7.2 6 . 7.3 6 . 6 . 7.4 . . . 101 102 103 104 105 106 ( ) 107 ( ) 108 (6 ) (100 ) 109 110 111 112 , 113 A
