NSN 5306-01-541-5251

Part Details | CLOSE TOLERANCE BOLT

5306-01-541-5251 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: 3M1263724, 3M1263-7-24, 93784724, 93784-7-24, PBF1626724, PBF1626-7-24, 5306-01-541-5251, 01-541-5251, 5306015415251, 015415251

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 29, 200601-541-525127851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-541-5251
Part Number Cage Code Manufacturer
3M1263-7-2476301BOEING COMPANY, THEDBA BOEING
93784-7-2456878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
PBF1626-7-2427624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
Technical Data | NSN 5306-01-541-5251
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.705 INCHES NOMINAL
FASTENER LENGTH2.205 INCHES NOMINAL
MINIMUM TENSILE STRENGTH28340 POUNDS PER SQUARE INCH
HEAD STYLE1 HEXAGON
HEAD HEIGHT0.393 INCHES NOMINAL
EXTENDED WASHER DIAMETER0.812 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.063 INCHES NOMINAL
HEAD MINOR DIAMETER0.500 INCHES NOMINAL
GRIP LENGTH1.500 INCHES NOMINAL
GRIP DIAMETER0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
SPECIAL FEATURESNON-DRILLED SHANK; WRENCHING ELEMENT NO. 16
END ITEM IDENTIFICATIONFIGHTER AIRCRAFT (F18 E/F); ARR LIST CODE
PART NAME ASSIGNED BY CONTROLLING AGENCYINAVY: BOLT, MACHINE; DWG: BOLT - CLOSE TOLERANCE, SPLINE DRIVE, FLANGE HEAD (145 KSI FSU) CRES