NSN 5306-00-208-0261

Part Details | INTERNALLY RELIEVED BODY BOLT

5306-00-208-0261 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.

Alternate Parts: 339459, 5306-00-208-0261, 00-208-0261, 5306002080261, 002080261

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-208-026106676 ( BOLT, INTERNALLY RELIEVED BODY )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

CONCENTRIC HOLE UNTHREADED

Cross Reference | NSN 5306-00-208-0261
Part Number Cage Code Manufacturer
33945998897LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS
Technical Data | NSN 5306-00-208-0261
Characteristic Specifications
THREAD SERIES DESIGNATOR UN
NOMINAL THREAD DIAMETER2.000 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.365 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
FASTENER LENGTH8.780 INCHES NOMINAL
MINIMUM TENSILE STRENGTH150000 POUNDS PER SQUARE INCH
STYLE DESIGNATOR CONCENTRIC HOLE UNTHREADED
CONCENTRIC HOLE DIAMETER1.375 INCHES NOMINAL
HEAD STYLE3 UNDERCUT HEXAGON
HEAD DIAMETER3.000 INCHES NOMINAL
HEAD HEIGHT0.250 INCHES NOMINAL
WIDTH BETWEEN FLATS2.478 INCHES MINIMUM AND 2.488 INCHES MAXIMUM
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