5306-00-208-0257 BOLT,SHOULDER Index 5305-00-208-0262 SCREW,MACHINE

National Stock Number:
5306-00-208-0261

Federal Supply Class:
5306

National Item Identification Number:
002080261

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.


Manufacturer Information:
33945998897LOCKHEED MARTIN CORP


Techincal Specification:
CONCENTRIC HOLE DIAMETER1.375 INCHES NOMINAL
FASTENER LENGTH8.780 INCHES NOMINAL
HEAD HEIGHT0.250 INCHES NOMINAL
HEAD DIAMETER3.000 INCHES NOMINAL
HEAD STYLEROUND W/WRENCH FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8630 OVERALL
MINIMUM TENSILE STRENGTH150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER2.000 INCHES
SPECIAL FEATURESSLOT IN THREAD END 0.250 IN. WIDE BY 0.500 IN. DEEP AND UNDERCUT BETWEEN HEAD AND GRIP 1.975 IN. MIN 1.985 IN. MAX DIA BY 0.170 IN. WIDE AND UNDERCUT BETWEEN GRIP AND THREADS 1.896 IN.MIN 1.906 IN. MAX DIA BY 0.190 IN. MIN 0.220 IN. MAX WIDE
WIDTH BETWEEN FLATS2.478 INCHES MINIMUM AND 2.488 INCHES MAXIMUM
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONTY 2.FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.365 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUN


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