1、F“ g f L. “ . I 5305 FED. SUP CLASS NOMINAL SIZE B THREADS PER INCH . D BODY DIAMETER MAX MIN X HEAD DIAMETER MAX MIN H HEAD HEIGHT MAX MIN J SOCKET SIZE NOM R RADIUS MAX MIN L LENGTH $: 1/2 5/8 ;p 1-1/4 142 1- 3/4 2 2-1/4 242 3 #8 (.I641 A #lo (.190) 36 UNF-3A / 32 UNF-.3A - - DASH NO. / 6 L A 5/16
2、 24 UNF-3A .3125 .3084 7/16 .429 5/16 ,306 3/16/ 7/32 .O15 ,010 MATERIAL: Steel, alloy, minimum proof load based on 130,000 PSI, Rockwell C36-43 in accordance PROTECTIVE COATING: Cadmium or Zinc, Specification QQ-P-416, Type II, Class 3 or 49-2-325, Type THREADS: Thiihrtads shall be in accordance wi
3、th Screw-thread Standards for Federal Services, with Type I of Procurement Specification. C ass 3. . Handbaak H-28. MINIMUM THREAD LENGTH: Shall be one and one half times the diameter, plus 1/2 in. or 3/8 the “ _“ - “. “ length whichever is the greater. Screws too short for the formula shall be thre
4、aded LENGTH TOLERANCE: The allowable tolerance on the length (L) under the head on lengths 2 inches as close to the head as practicable. an under shall be 3 per cent of the nominal len th with a minimum of .O30 in., two- thkds to be applied plus and one-third minus. 8n lengths over 2 in. to 6 in. pl
5、us or minus 1/32 in. and on lengths over 6 in. plus or minus 1/16 in. - Referenced documents of issue in effect on date of invitation for bids shall apply. . (i) This docment has been prohulgated by the Department of Defense as the Military Standard. to limit the selection of the item, product or de
6、sign covered herein in than 90 days after the latest date of approval shown and shall govern when in conflict . engineering, design and procurement. This standard shall become effective not later with other documents referenced herein. Plain or knurled heads are optional. All dimensions in inches, T
7、he MS part number consists of the MS number, plus the dash number. Example: 31835458-7. I ENTIRE STANDARD REVISED- INACTIVE FOR DESIGN SEE SHEET 2 TITLE SCREW, CAP, SOCKET HEAD-HEXAGON, ALLOY STEEL, CADMIUM OR ZINC; UNF-3A. Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo rep
8、roduction or networking permitted without license from IHS-,-,-MS35Ll5B REV B 53 W 7777732 0005673 3 W . NCMPXAL SiZE B THREADS PER IXCH 24 UWF-3A 20 UNFa3A D BODY DIAMETER .4326 A HEAD OCkWTER . 5/8 HIN .553 .615 5/16 .O30 .o20 R RADIUS MAX HIN KOTE: For material, protective coating and other perti
9、nent data, see sheet 1. INACTIVE FOR DESIGNafter 21 SEP 1964 use MS16998 for Desi n and Enqineering. For maintenance of existing e uipment use MS35456 to replace the 5/16, 7/16 and 578 inch sizes. These sizes cannot be replace by those appearing on MS16998 in counterbored holes or other clore applications. .A KC TITLE hhw Gmt SHIPS MILITARY SlND,il ASD SCSEW,CAP, SOCKET HEAD- HEAGON, ALLOY STEEL,CADMIUM OR ZINC, UNF-BA . . MS 35458. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
