DLA MS51999-1967 STUD LOCKED IN -RING LOCKED SERRATED DESIGN AND USAGE LIMITATIONS FOR《设计及使用限制锯齿环形锁定柱头螺栓》.pdf

1、MS5L499 53 m 9999932 0006458 m RING LOCKED STUDS FOR TAPPED HOLES SHALL BE SUBJECT TO THE FOLLOWING LIMITATIONS AND USAGE: I. STUDS USED AS STRUCTURAL FASTENERS ARE INTENDED TO BE LOADED PREDOMINATELY IN TENSION. STRUCTU2kL JOINTS CARRYING SHEAR LOADS SHOULD BE DESIGNED TO PRECLUDE SUBJECTING THE ST

2、UDS TO SI-EAR LOADS. 2. 3. NUT END THREAD OF STUDS UNDER .250 DIAMETER SHOULD E13i BE DRILLED FOR COTTER PINS. STUDS WHICH ARE INSTALLED IN THE STRUCTURE SHALL BE INSTALLED IN A POSITIVE MANNER AS SPECIFIED IN MS51995 TO ELIMINATE THE POSSIBILITY OF THEIR ROTATION DISPLACEMENT WHEN INSYALLING OR REM

3、OVING THE MATING UNIT. INSTALLATION OR REMOVAL SHALL BE ACCOMPLISHED WITHOLiT INJURY TO THE PARENT MATERIAL TO PERMIT REPLACEMENT BY AN IDENTICAL STUD AND LOCKRING. RING LOCKED STUDS MAY BE USED TO PROVIDE HIGHER STRENGTH CAfABILITIES IN RELATIVELY LOW STRENGTH SRUCTURAL MATERIALS. THESE MATERIALS A

4、RE REFERRED 13 AS THE “PARENT MATERIAL” WITH RESPECT TO THIS STASDARD, 4. 5. IN THE PROCESS OF MAKING A DESIGN SELECTION OF STUDS IN STRUCTURAL APPLICATIONS IT IS NECESSARY THAT THE PROPER DfGREE OF CONSIDERATION BE GIVEN TO THE AXIAL LOAD CARRYING CAPABILITIES OF THE INSTALLED STUD IN THE SPECIFIC

5、PARENT MATERLAL. THE AXIAL LOAD CAPABILITY (RESISTANCE TO PULLOUT) OF AN INSTALLED STUD IS THE PWDUCT OF THE SHEAk ENGAGEMENT AREA OF THE STUD END THREAD AND THE SHEAR ULTIMATE STRESS OF THE PARENT MATERIAL. (a) (b) (c) THE SHEAR ULTIMATE STRESS (fw) FOR MOST MATERIALS IS USTED IN MIL HANDBOOK 5. TH

6、E SHEAR ENGAEMENT AREAS OF THE STUD END THREADS ARE LISTED IN MIL-5-45909. SHEAR EXGAGEMENT AREA IS THE ASSEMBLED DIMENSIONAL VALUE FOR THE OVERALL ENGAGED AREA OF MATING THREAD MEMBERS. IT DOES NOT REPRESENT A DIMENSION OF EITHER OF THE MEMBERS IN AN UPJASSEMBLED CONDITION. . D W K . O 2 2 JJ 3 k i W O K e n - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-