1、 MS35691E 23 March 2005SUPERSEDING MS35691D 29 August 1984 MILITARY SPECIFICATION SHEET NUT, PLAIN, HEXAGON (JAM) UNC-2B AND UNF-2B This specification sheet is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein s
2、hall consist of this specification sheet and FF-N-836. FGHH.016APPROX302302302OPTIONAL DESIGNSTABLE I. DESIGN CONFIGURATIONS NOMINAL SIZE OR BASIC MAJOR DIAMETER OF THREAD WIDTH ACROSS FLATS P WIDTH ACROSS CORNERS G THICKNESS H MAX MIN MAX MNI MAX MIN1/4 - .2500 5/16 - .3125 3/8 - .3750 7/16 - .4375
3、 1/2 - .5000 9/16 - .5625 5/8 - .6250 3/4 - .7500 7/8 - .8750 1 - 1.0000 1 1/8 - 1.1250 1 1/4 - 1.2500 1 3/8 - 1.3750 1 1/2 - 1.5000 1 3/4 - 1.7500 2 - 2.0000 2 1/4 - 2.2500 2 1/2 - 2.5000 2 3/4 - 2.7500 3 - 3.0000 .4375 .5000 .5625 .6875 .7500 .8750 .9375 1.1250 1.3125 1.5000 1.6875 1.8750 2.0625 2
4、.2500 2.6250 3.0000 3.3750 3.7500 4.1250 4.5000 .428 .489 .551 .675 .736 .861 .922 1.088 1.269 1.450 1.631 1.812 1.994 2.175 2.538 2.900 3.262 3.625 3.988 4.350 .505 .577 .650 .794 .866 1.010 1.083 1.299 1.516 1.732 1.949 2.165 2.382 2.598 3.031 3.464 3.897 4.330 4.763 5.196 .488 .557 .628 .768 .840
5、 .982 1.051 1.240 1.447 1.653 1.859 2.066 2.273 2.480 2.893 3.306 3.719 4.133 4.546 4.959 .163 .195 .227 .260 .323 .324 .387 .446 .510 .575 .639 .751 .815 .880 1.009 1.138 1.251 1.505 1.634 1.763 .150 .180 .210 .240 .302 .301 .363 .398 .458 .519 .579 .687 .747 .808 .929 1.050 1.155 1.401 1.522 1.643
6、 Reactivated after 23 March 2005 and may be used for new and existing designs and acquisitions. INCH-POUND AMSC N/A FSC 5310 1 of 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 2 ACTIVE FOR NEW DESIGN THE PART NUMBERS IN TABLE II ONLY WI
7、LL BE USED FOR DESIGN AND ENGINEERING. TABLE II. DASH NUMBERS THREAD SIZE .2500-20UNC-2B .2500-28UNF-2B .3125-18UNC-2B .3125-24UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE STEEL, CARBON, GRADE B, PHOSPHATE COATED CRES, 30
8、0 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 1 2 406 3 4 5 6 426 7 8 9 10 506 11 12 13 14 526 15 16 THREAD SIZE .3750-16UNC-2B .3750-24UNF-2B .4375-14UNC-2B .4375-20UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE STEEL, CAR
9、BON, GRADE B, PHOSPHATE COATED CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 17 18 606 19 20 21 22 626 23 24 25 26 706 27 28 29 30 726 31 32 THREAD SIZE .5000-13UNC-2B .5000-20UNF-2B .5625-12UNC-2B .5625-18UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, CADMIUM PLATE
10、STEEL, CARBON, GRADE C, CADMIUM PLATE STEEL, CARBON, GRADE B, PHOSPHATE COATED CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 33 34 806 35 36 37 38 826 39 40 41 42 - 43 44 45 46 - 47 48 THREAD SIZE .6250-11UNC-2B .6250-18UNF-2B .7500-10UNC-2B .7500-16UNF-2B MATERIAL DASH NO DASH NO DASH NO DA
11、SH NO STEEL, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE STEEL, CARBON, GRADE B, PHOSPHATE COATED CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 49 50 1006 51 52 53 54 1026 55 56 57 58 1206 59 60 61 62 1226 63 64 THREAD SIZE .8750-9UNC-2B .8750-14-UNF-2B 1.0000-8UNC-2
12、B 1.0000-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Provided by IHSNot for ResaleNo reproduction or networking perm
13、itted without license from IHS-,-,-MS35691E 3 ACTIVE FOR NEW DESIGN THE PART NUMBERS IN TABLE II ONLY WILL BE USED FOR DESIGN AND ENGINEERING. TABLE II. DASH NUMBERS - CONTINUED THREAD SIZE 1.12500-7UNC-2B 1.12500-12UNF-2B 1.2500-7UNC-2B 1.2500-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL
14、, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 THREAD SIZE 1.3750-6UNC-2B 1.3750-12UNF-2B 1.5000-6UNC-2B 1.5000-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBO
15、N, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 THREAD SIZE 1.7500-5UNC-2B 2.0000-4-1/2UNC-2B 2.2500-4-1/2UNC-2B 2.5000-4UNC-2B MATERIAL DASH NO DASH NO DASH NO DASH NO
16、STEEL, CARBON, GRADE B, CADMIUM PLATE STEEL, CARBON, GRADE C, CADMIUM PLATE CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 THREAD SIZE 2.7500-4UNC-2B 3.0000-4UNC-2B MATERIAL DASH NO DASH NO STEEL, CARBON, GRADE B, CADMIUM PLATE S
17、TEEL, CARBON, GRADE C, CADMIUM PLATE CRES, 300 SERIES, PASSIVATED 1/ BRASS, BLACK OXIDE 2/ 129 130 131 132 133 134 135 136 1/ SEE REQUIREMENT 5 2/ SEE REQUIREMENT 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 4 REQUIREMENTS: 1. MATERIAL:
18、 STEEL, CARBON, GRADES B AND C, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. STEEL, CORROSION RESISTANT, 300 SERIES, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. BRASS, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. 2. PROTECTIVE COATING AND TREATMENT: CADMIUM PLATED, BLACK OXIDE OR PHOSPHATE COATI
19、NG, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. CLEANED, DESCALED AND PASSIVATED, IN ACCORDANCE WITH ASTM A380. NICKEL PLATED, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. 3. MAGNETIC PERMEABILITY. CORROSION RESISTANT STEEL FASTENERS SHALL HAVE A MAGNETIC PERMEABILITY OF 2.0 MAXIMUM (AIR = 1.0) A
20、T A FIELD STRENGTH OF H = 200 OERSTEDS USING A MAGNETIC INDICATOR PER ASTM A342. 4. THREADS. THREADS SHALL BE IN ACCORDANCE WITH FED-STD-H28/2. ACCEPTABILITY OF SCREW THREADS SHALL BE IN ACCORDANCE WITH FED-STD-H28/20, SYSTEM 21. 5. PART NUMBER. THE PART NUMBER CONSISTS OF THE BASIC MS SHEET NUMBER,
21、 FOLLOWED BY A DASH NUMBER TAKEN FROM TABLE II. EXAMPLE: MS35691 1 DASH NUMBER BASIC MS SHEET NUMBER MS35691 1 INDICATES NUT, PLAIN, HEXAGON (JAM) THREAD SIZE .2500-20UNC-2B, STEEL, CARBON, GRADE B, CADMIUM PLATED. 1/ ADD “B” BEFORE DASH NUMBER FOR CORROSION RESISTANT STEEL NUTS WITH BLACK OXIDE COA
22、TING, CLASS 4, IN ACCORDANCE WITH MIL-DTL-13924. EXAMPLE: MS35691 B 3.2500-20UNC-2B BLACK OXIDE COATED CORROSION RESISTANT STEL BASIC MS SHEET NUMBER 2/ ADD “N” BEFORE DASH NUMBER FOR BRASS NUTS WITH NICKEL PLATING, IN ACCORDANCE WITH PROCUREMENT SPECIFICATION. EXAMPLE: MS35691 N 4.2500-20UNC-2B NIC
23、KEL PLATED BRASS BASIC MS SHEET NUMBER Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 5 NOTES: 1. DIMENSIONS ARE IN INCHES. 2. FOR DESIGN USE PART NUMBERS IN TABLE II. 3. FOR CANCELLED PART NUMBERS SEE TABLE III. 4. FOR MAINTENANCE USE INAC
24、TIVE PART NUMBERS OF TABLE IV. 5. FOR INTERCHANGEABILITY BETWEEN THE CANCELLED (GRADE “A”, UNCOATED) NUTS AND SUPERSEDING INACTIVATED(GRADE”B”, UNCOATED ) NUTS, SEE TABLE V. 6. FOR INTERCHANGEABILITY OF CANCELLED OR INACTIVATED AND NEW PART NUMBERS, SEE TABLE VI AND TABLE VII. 7. FOR DESIGN FEATURE
25、PURPOSES, THIS STANDARD TAKES PRECEDENCE OVER PROCUREMENT DOCUMENTS REFERENCED HEREIN. 8. CHANGES FROM PREVIOUS ISSUE. MARGINAL NOTATIONS ARE NOT USED IN THIS REVISION TO IDENTIFY CHANGES WITH RESPECT TO THE PREVIOUS ISSUE DUE TO THE EXTENT OF THE CHANGES. Provided by IHSNot for ResaleNo reproductio
26、n or networking permitted without license from IHS-,-,-MS35691E 6 CANCELLED PART NUMBERS THE FOLLOWING PART NUMBERS ARE CANCELLED AFTER 21 MAR 1966 TABLE III THREAD SIZE .2500-20UNC-2B .2500-28UNF-2B .3125-18UNC-2B .3125-24UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON,GRADE A, UNCOAT
27、ED CAD OR ZINC OPTIONAL PHOSPHATE 401 402 403 421 422 423 501 502 503 521 522 523 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL 405 425 505 525 STEEL,CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 408 409 428 429 508 509 528 529 CRES, 300-400 SERIES, PASSIVATED 410 430 510 530 BRASS, UNCOATED TIN PL
28、ATED 411 412 431 432 511 512 531 532 THREAD SIZE .3750-16UNC-2B .3750-24UNF-2B .4375-14UNC-2B .4375-20UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 601 602 603 621 622 623 701 702 703 721 722 723 STEEL, CARBON, GRADE B, CAD OR ZINC OP
29、TIONAL 605 625 705 725 STEEL, CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 608 609 628 629 708 709 728 729 CRES, 300-400 SERIES PASSIVATED 610 630 710 730 BRASS, UNCOATED TIN PLATED 611 612 631 632 711 - 731 - THREAD SIZE .5000-13UNC-2B .5000-20UNF-2B .5625-12UNC-2B .5625-18UNF-2B MATERIAL DASH N
30、O DASH NO DASH NO DASH NO STEEL, CARBON, GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 801 802 803 821 822 823 901 902 903 921 922 923 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 805 - 825 - 905 906 925 926 STEEL CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 808 809 828 829 908 909 9
31、28 929 CRES, 300-400 SERIES, PASSIVATED 810 830 910 930 BRASS, UNCOATED 811 831 911 931 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 7 CANCELLED PART NUMBERS THE FOLLOWING PART NUMBERS ARE CANCELLED AFTER 21 MAR 1966 TABLE III C0NTINUED T
32、HREAD SIZE .6250-11UNC-2B .6250-18UNF-2B .7500-10UNC-2B .7500-16UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON,GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 1001 1002 1003 1021 1022 1023 1201 1202 1203 1221 1222 1223 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL 1005 1025 1205 1225
33、STEEL,CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 1008 1009 1028 1029 1208 1209 1228 1229 CRES, 300-400 SERIES, PASSIVATED 1010 1030 1210 1230 BRASS, UNCOATED 1011 1031 1211 1231 THREAD SIZE .8750-9UNC-2B .8750-14UNF-2B 1.0000-8UNC-2B 1.0000-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEE
34、L, CARBON, GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 1401 1402 1403 1421 1422 1423 1601 1602 1603 1621 1622 1623 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 1405 1406 1425 1426 1605 1606 1625 1626 STEEL, CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 1408 1409 1428 1429 1608 1609
35、1628 1629 CRES, 300-400 SERIES PASSIVATED 1410 1430 1610 1630 BRASS, UNCOATED 1411 1431 1611 1631 THREAD SIZE 1.1250-7UNC-2B 1.1250-12UNF-2B 1.2500-7UNC-2B 1.2500-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 1801 1802 1803 1821 182
36、2 1823 2001 2002 2003 2021 2022 2023 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 1805 1806 1825 1826 2005 2006 2025 2026 STEEL CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 1808 1809 1828 1829 2008 2009 2028 2029 CRES, 300-400 SERIES, PASSIVATED 1810 1830 2010 2030 BRASS, UNCOATED 1811
37、1831 2011 2031 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 8 CANCELLED PART NUMBERS THE FOLLOWING PART NUMBERS ARE CANCELLED AFTER 21 MAR 1966 TABLE III - CONTINUED THREAD SIZE 1.3750-6UNC-2B 1.3750-12UNF-2B 1.5000-6UNC-2B 1.5000-12UNF-2
38、B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON,GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 2201 2202 2203 2221 2222 2223 2401 2402 2403 2421 2422 2423 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 2205 2206 2225 2226 2405 2406 2425 2426 STEEL,CARBON, GRADE C, CAD OR ZINC OPTI
39、ONAL PHOSPHATE 2208 2209 2228 2229 2408 2409 2428 2429 CRES, 300-400 SERIES, PASSIVATED 2210 2230 2410 2430 BRASS, UNCOATED 2211 2231 2411 2431 THREAD SIZE 1.7500-5UNC-2B 2.0000-4-1/2UNC-2B 2.2500-4-1/2UNC-2B 2.5000-4UNC-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE A, UNCOATED CA
40、D OR ZINC OPTIONAL PHOSPHATE 2801 2802 2803 3201 3202 3203 3601 3602 3603 4001 4002 4003 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 2805 2806 3205 3206 3605 3606 4005 4006 STEEL, CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 2808 2809 3208 3209 3608 3609 4008 4009 CRES, 300-400 SERIES
41、PASSIVATED 2810 3210 3610 4010 BRASS, UNCOATED 2811 3211 3611 4011 THREAD SIZE 2.7500-4UNC-2B 3.0000-4UNC-2B MATERIAL DASH NO DASH NO STEEL, CARBON, GRADE A, UNCOATED CAD OR ZINC OPTIONAL PHOSPHATE 4401 4402 4403 4801 4802 4803 STEEL, CARBON, GRADE B, CAD OR ZINC OPTIONAL PHOSPHATE 4405 4406 4805 48
42、06 STEEL CARBON, GRADE C, CAD OR ZINC OPTIONAL PHOSPHATE 4408 4409 4808 4809 CRES, 300-400 SERIES, PASSIVATED 4410 4810 BRASS, UNCOATED 4411 4811 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 9 INACTIVE PART NUMBERS FOR NEW DESIGN THE FOLL
43、OWING PART NUMBERS IN TABLE IV ARE INACTIVE FOR NEW DESIGN AFTER 21 MAR 1966. USE FOR MAINTENANCE PURPOSES ONLY. TABLE IV THREAD SIZE .2500-20UNC-2B .2500-28UNF-2B .3125-18UNC-2B .3125-24UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON,GRADE B, UNCOATED 404 424 504 524 STEEL, CARBON, GR
44、ADE C, UNCOATED 407 427 507 527 THREAD SIZE .3750-16UNC-2B .3750-24UNF-2B .4375-14UNC-2B .4375-20UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, UNCOATED 604 624 704 724 STEEL, CARBON, GRADE C, UNCOATED 607 627 707 727 THREAD SIZE .5000-13UNC-2B .5000-20UNF-2B .5625-12UNC-2B
45、.5625-18UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, UNCOATED 804 824 904 924 STEEL, CARBON, GRADE C, UNCOATED 807 827 907 927 THREAD SIZE .6250-11UNC-2B .6250-18UNF-2B .7500-10UNC-2B .7500-16UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, UNCOATED
46、1004 1024 1204 1224 STEEL, CARBON, GRADE C, UNCOATED 1007 1027 1207 1227 THREAD SIZE .8750-9UNC-2B .8750-14UNF-2B 1.0000-8UNC-2B 1.0000-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, UNCOATED 1404 1424 1604 1624 STEEL, CARBON, GRADE B, UNCOATED 1407 1427 1607 1627 THREAD S
47、IZE 1.1250-7UNC-2B 1.1250-12UNF-2B 1.2500-7UNC-2B 1.2500-12UNF-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL CARBON, GRADE B, UNCOATED 1804 1824 2004 2024 STEEL, CARBON, GRADE C, UNCOATED 1807 1827 2007 2027 THREAD SIZE 1.3750-6UNC-2B 1.3750-12UNF-2B 1.5000-6UNC-2B 1.5000-12UNF-2B MATERIAL DASH
48、NO DASH NO DASH NO DASH NO STEEL, CARBON, GRADE B, UNCOATED 2204 2224 2404 2424 STEEL, CARBON, GRADE C, UNCOATED 2207 2227 2407 2427 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS35691E 10 INACTIVE PART NUMBERS FOR NEW DESIGN THE FOLLOWING PART NUMBERS IN TABLE IV ARE INACTIVE FOR NEW DESIGN AFTER 21 MAR 1966. USE FOR MAINTENANCE PURPOSES ONLY. TABLE IV - CONTINUED THREAD SIZE 1.7500-5UNC-2B 2.0000-4-1/4UNC-2B 2.2500-4-1/2UNC-2B 2.5000-4UNC-2B MATERIAL DASH NO DASH NO DASH NO DASH NO STEEL, CARBON,GRADE B, UNCOATE
