NSN 5306-00-003-4121

Part Details | CLOSE TOLERANCE BOLT

5306-00-003-4121 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: CA4510441, CA4510-4-41, AS194441, AS194-4-41, MS27576441, MS27576-4-41, MS27576441, MS27576-4-41, 106467441, 106467-4-41, 5306-00-003-4121, 00-003-4121, 5306000034121, 000034121

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 14, 197200-003-412127851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DISHED HEXAGON

Cross Reference | NSN 5306-00-003-4121
Part Number Cage Code Manufacturer
CA4510-4-4129372ARCONIC GLOBAL FASTENERS & RINGS,INC.
AS194-4-4184256AVIBANK MFG., INC.
MS27576-4-4196906MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS
MS27576-4-4180205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
106467-4-4180539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5306-00-003-4121
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.283 INCHES MINIMUM AND 0.334 INCHES MAXIMUM
FASTENER LENGTH2.981 INCHES MINIMUM AND 3.001 INCHES MAXIMUM
HEAD STYLE DISHED HEXAGON
HEAD HEIGHT0.120 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
GRIP LENGTH2.562 INCHES MINIMUM AND 2.578 INCHES MAXIMUM
GRIP DIAMETER0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
SPECIAL FEATURESW/RETAINING ELEMENT ON SHANK