1、AMSC N/A FSC 5310 DETAIL SPECIFICATION SHEET NUT, SELF LOCKING, HEXAGON 12OOF, 125 KSI FTU This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and NA
2、SM7873. HT88 MINC30 5MANUFACTURERSIDENTIFICATION STAMPSHAPE OF TOPOPTIONALWNSEE NOTE 9KFIGURE 1. Nut. MS20500G 29 August 2012 SUPERSEDING MS20500F 15 August 2011 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS20500G TABLE I. Dash Number
3、s, Dimensions and Strengths. DASH THREAD C H K N T W AXIAL STRENGTH WEIGHT LBS/100 NO. AS8879 .020 MAX MIN MIN MIN MIN MAX MIN LBS MIN MAX 1032 .1900-32UNJF-3B .210 .250 .202 .347 .413 .085 .376 .367 2,460 .64 428 .2500-28UNJF-3B .273 .328 .280 .410 .488 .116 .439 .430 4,580 1.08 524 .3125-24UNJF-3B
4、 .335 .360 .312 .472 .557 .123 .502 .492 7,390 1.56 624 .3750-24UNJF-3B .398 .469 .533 .628 .153 .564 .553 11,450 2.28 (a) 720 .4375-20UNJF-3B .467 .469 .421 .698 .178 .627 .615 15,450 3.52 720A .659 .773 .690 .679 820 .5000-20UNJF-3B .531 .610 .562 .721 .840 .221 .752 .741 21,110 4.92 918 .5625-18U
5、NJF-3B .594 .704 .656 .845 .982 .243 .877 .865 26,810 7.68 1018 .6250-18UNJF-3B .656 .766 .718 .908 1.051 .274 .940 .928 34,130 9.48 1216 .7500-16UNJF-3B .787 .891 .843 1.032 1.191 .316 1.064 1.052 50,020 13.25 1414 .8750-14UNJF-3B .918 1.016 .968 1.219 1.404 .570 1.252 1.239 68,440 23.40 1612 1.000
6、0-12UNJF-3B 1.044 1.141 1.093 1.407 1.615 .635 1.440 1.427 90,000 31.02 (a) 1614 1.0000-14NJC-3B (a) Inactive for design after 17 Nov. 1967 Requirements: 1. Materials: Heat resistant and corrosion resistant steel in accordance with SAE AMS 5642 (UNS S34720, S34723), SAE AMS 5646 (UNS S34700), SAE AM
7、S 5732 (UNS S66286), or SAE AMS 5737 (UNS S66286). 2. Surface Coating: silver plate in accordance with SAE AMS 2410, plate thickness on external surface shall not be less than .0002 inch. Threads shall show complete coverage but thickness requirements on threads are waived. 3. Surface Texture: Surfa
8、ce texture in accordance with ASME B46.1. unless otherwise specified surface roughness shall not be greater than Ra 125. Notes: 1. Threads in accordance with SAE AS8879. 2. Dimensions across flats include deformation of self-locking device. 3. These nuts shall be used in accordance with NASM33588. 4
9、 Unless otherwise specified dimensions in inches. 5. Break all sharp edges and remove all hanging burrs and slivers. 6. MS20500-720A items can universally replace the inactive MS20500-720 items but the inactive MS20500-720 items cannot always replace the superseding MS20500-720A items. 7. Example o
10、f part number: MS20500 - 428 - Nut, Self-Locking, .2500-28, Heat Resistant and CRES Nut, Silver Plated Size Dash No. (See Table 1) Military Standard Number 8. For design feature purposes, this standard takes precedence over procurement documents referenced herein. 2 Provided by IHSNot for ResaleNo r
11、eproduction or networking permitted without license from IHS-,-,-MS20500G 9. Washer face, chamfer, or radius relief to hex flats are optional provided the 30 5 angle and “K” dimensions are maintained. 10. Changes from previous issue. Marginal notations are not used in this revision to identify chang
12、es with respect to the previous issue due to the extent of the changes. Custodians: Preparing activity: Army - AV DLA - IS Navy - AS Air Force - 99 (Project 5310-2012-004) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/daps.dla.mil. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
