NSN 5306-01-027-1997

Part Details | CLOSE TOLERANCE BOLT

5306-01-027-1997 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: VS3117418, VS3117-4-18, GB511BY4M18, BM15016418A, BM15016-4-18A, BM15016418A, BM15016-4-18A, GB511BY418M, GB511BY4-18M, GB511BY4M18, 110185419M, 110185-4-19M, 110185418M, 110185-4-18M, 110185418M, 110185-4-18M, GB511BY4M18, GB511BY4M18, VEH1602714M18, VEH160271-4M18, GB511BY4M18, 5306-01-027-1997, 01-027-1997, 5306010271997, 010271997

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 10, 197601-027-199727851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-027-1997
Part Number Cage Code Manufacturer
VS3117-4-1892215ARCONIC GLOBAL FASTENERS & RINGS,INC.
GB511BY4M1892215ARCONIC GLOBAL FASTENERS & RINGS,INC.
BM15016-4-18A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BM15016-4-18A97928HUCK INTL INC
GB511BY4-18M26512NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV MISSION SYSTEMS
GB511BY4M180PTK6SPS TECHNOLOGIES INC
110185-4-19M56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
110185-4-18M56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
110185-4-18M80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
GB511BY4M1806725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
GB511BY4M1827624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
VEH160271-4M1806710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
GB511BY4M1806710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-027-1997
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.425 INCHES NOMINAL
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 LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA26512-GB511BY4 MANUFACTURERS STANDARD
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT