NSN 5306-00-137-6580

Part Details | CLOSE TOLERANCE BOLT

5306-00-137-6580 An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.

Alternate Parts: VS2979A04U016, VS2979A04U016, BM32104A016, BM3210-4A016, BM32104A016, BM3210-4A016, STSBG001A04U016, 11701A04U016, 684854A16, 68485-4A16, 684854A16, 68485-4A16, AIC2264A04U016, PBF1042A4U016, VAL236024D016, VAL23602-4D016, 5306-00-137-6580, 00-137-6580, 5306001376580, 001376580

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 09, 197100-137-658027851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON

Cross Reference | NSN 5306-00-137-6580
Part Number Cage Code Manufacturer
VS2979A04U01692215ARCONIC GLOBAL FASTENERS & RINGS,INC.
VS2979A04U01606950ARCONIC GLOBAL FASTENERS & RINGS,INC.
BM3210-4A01617446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BM3210-4A01697928HUCK INTL INC
STSBG001A04U01698897LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS
11701A04U01659563REID PRODUCTS INC.DBA REID PRODUCTS
68485-4A1656878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
68485-4A1680539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
AIC2264A04U01606725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
PBF1042A4U01627624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
VAL23602-4D01606710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-00-137-6580
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.277 INCHES MINIMUM AND 0.324 INCHES MAXIMUM
FASTENER LENGTH1.277 INCHES MINIMUM AND 1.324 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH156000 POUNDS PER SQUARE INCH
HEAD STYLE DOUBLE HEXAGON
HEAD HEIGHT0.164 INCHES NOMINAL
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
GRIP LENGTH1.000 INCHES NOMINAL
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM