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National Stock Number:
5306-00-164-4252
Federal Supply Class:
5306
National Item Identification Number:
001644252
Description:
BOLT,INTERNALLY RELIEVED BODY
Detail:
An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE.
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Manufacturer Information:
| 65850-05138-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| CONCENTRIC HOLE DEPTH | 1.950 INCHES NOMINAL | | CONCENTRIC HOLE DIAMETER | 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM | | FASTENER LENGTH | 1.920 INCHES MINIMUM AND 1.930 INCHES MAXIMUM | | HEAD DIAMETER | 1.300 INCHES NOMINAL | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM | | HEAD STYLE | ROUND W/WRENCH FLATS | | MATERIAL | STEEL COMP 4340 OVERALL | | NOMINAL THREAD DIAMETER | 0.781 INCHES | | SPECIAL FEATURES | SEVEN HOLES EQUALLY SPACED0.077 IN. MIN DIA,0.080 IN. MAX DIA,1.754 IN. FROM BEARINGSURFACE OF HEAD | | WIDTH BETWEEN FLATS | 1.125 INCHES NOMINAL | | STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | TEST DATA DOCUMENT | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.330 INCHES MINIMUM AND 0.350 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNS | | THREAD QUANTITY PER INCH | 32 |
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