DLA MS21271 REV A-1963 SCREW INSTRUMENT - BINDING HEAD《仪器的扁头结合螺钉》.pdf

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1、a IS23271 REV A 53 9999932 0004929 9 FED. SUP CLASS 5305 . . .% . -_ -. . . - - . _ ._ . I cl L I 1 1 HEAD DIMENSIONS l (a) “T8t MEASURED FROM BEARING SURFACE. (c) FUR SCREW LENGTHS FOUR TIMES THE HXIMIM MAJOR DIAHETER OR LFSS TMIEIU) LEADPA (Lt) SHALL EXTEND To mI“ lWJ TBREADS OF THE HEAD BMNG SURF

2、ACE. SCREWS OF GFZATER LENGTH SHALL HAfE COMPLETE THREAX FOR A MINIhiM OF FOUR MAXIMUH MAJOR DIAMETERS. HRTEFUAL: CORROSION-RESISTANT STEELS: QQ-S-763. CL4SS 303 COND A. CLASP 4l6: COM) A, HEAT TREAT TO 125,000-11i5,OOO PSI. CLASS 420, GOND A, HEAT TREAT TO o,ooo-o,ooo PSI. SCREWS SHALL BE FILCE OF

3、ALL PROJECTING BURRS, OBSERW AT 3X i.IAONIFICATION. DIMENSIONS IN INCHES. W DIAMETER OF THE UNTHREADED BODY SHALI. NOT BE MORE MAN THE EYWMUM MAJOR DIILYETER NOR LESS “ TH- p MIhTMiuX PITCH DIAMETER OF THE THREAD. -LE OF PART “BERS: - MS2127lA19 = .ho UNM CLASS 303 PASSIVATED CORROSIO:T-mSISTANT STE

4、EL SCRFrl, .O25 MAX LENGTH. Hs21271Bl9 = .4O UNM CLASS U6 PASSIVATED CORROSION-RESISTANT STEEL SCMt, .O25 MAX LENGTH. . . FOR DESIGN FEATURE PURPOSES, THIS STANDARD TAKES PRECEDEXCE OVER PROCUREMENT DOCUIBNTS REFERENCED HEREIN. REFWENCED DOCWTC SHALL BE OF THE ISSUE IN EFFECT ON DATE OF INVITATIONS

5、FOR BID. FOR CHAGES SEE SEErS 1 dr 2. I MILITARY STANDAI *A USAF-4s TITLE hher Curt Navy - Ships .Army -. wc SCREW, INSTRUMENT - BINDING HEALl i I I PROCUREMENT SPECIFICATION SUPERSEDES SHEET 1 OF 2 FF-s- 89 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or net

6、working permitted without license from IHS-,-,-MS2127L REV A 53 7777712 0004715 O . .* - f . - _I 1 - I FED. SUP CLASS 8 n Lx P c M IL IT A RY ST AN DA RD USAF - ASD TITLE Other Cust MS 2 I27 I Navy - Ship SCRFW, INSTRWT - BIND W , AnnY - wc. SHEET OF PROCUREMENT SPECIFICATION SUPERSEDES: FF-5-89 -1, 672 I 1 (Coordinatad) r-L-y ARC OBSOLETE. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-