NSN 5306-01-393-1297

Part Details | CLOSE TOLERANCE BOLT

5306-01-393-1297 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: AS374410, AS374-4-10, LB57410, LB57-4-10, LB57410, LB57-4-10, 03A094410, 03A094-4-10, 03A094410, 03A094-4-10, SLB131410, SLB131-4-10, 5306-01-393-1297, 01-393-1297, 5306013931297, 013931297

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 14, 199401-393-129727851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DISHED HEXAGON

Cross Reference | NSN 5306-01-393-1297
Part Number Cage Code Manufacturer
AS374-4-1084256AVIBANK MFG., INC.
LB57-4-1073197HI-SHEAR CORPORATION
LB57-4-10L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
03A094-4-1076823NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV NORTHROP GRUMMAN AEROSPACE
03A094-4-101W025NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV NORTHROP GRUMMAN AEROSPACE
SLB131-4-1016258SPACE-LOK, INC.
Technical Data | NSN 5306-01-393-1297
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.375 INCHES NOMINAL
FASTENER LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
HEAD STYLE DISHED HEXAGON
HEAD HEIGHT0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
GRIP LENGTH0.625 INCHES MINIMUM AND 0.641 INCHES MAXIMUM
GRIP DIAMETER0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
SPECIAL FEATURESPLUNGER PROTRUDING FROM HEAD 0.075 IN. MAX