NSN 5306-01-168-5631

Part Details | CLOSE TOLERANCE BOLT

5306-01-168-5631 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: VS3207419, VS3207-4-19, VS3207419, VS3207-4-19, ST3M731419, ST3M731-4-19, SC2663419, SC2663-4-19, ST3M731419, ST3M731-4-19, MB251419, MB251-4-19, MB251419, MB251-4-19, 10116066, 801651419, 801651-4-19, 111364419, 111364-4-19, 111364419, 111364-4-19, PBF1264419, PBF1264-4-19, 5306-01-168-5631, 01-168-5631, 5306011685631, 011685631

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 20, 198301-168-563127851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-168-5631
Part Number Cage Code Manufacturer
VS3207-4-1992215ARCONIC GLOBAL FASTENERS & RINGS,INC.
VS3207-4-1906950ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M731-4-1992215ARCONIC GLOBAL FASTENERS & RINGS,INC.
SC2663-4-1906950ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M731-4-1976301BOEING COMPANY, THEDBA BOEING
MB251-4-1973197HI-SHEAR CORPORATION
MB251-4-19L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
10116066A486GNIMIKKEISTOKESKUS NCB FINLAND
801651-4-190PTK6SPS TECHNOLOGIES INC
111364-4-19K5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
111364-4-1980539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
PBF1264-4-1927624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
Technical Data | NSN 5306-01-168-5631
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.400 INCHES MINIMUM AND 0.450 INCHES MAXIMUM
FASTENER LENGTH1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM
HEAD STYLE HEXAGON
HEAD HEIGHT0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
GRIP LENGTH1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM