Product Details | CLOSE TOLERANCE BOLT

5306-00-007-8768 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.

Part Alternates: 5306-00-007-8768, 00-007-8768, 5306000078768, 000078768

Hardware and Abrasives | Bolts

Supply Group (FSG) NSN Assign. NIIN
53 00-007-8768

Drawings & Photos | NSN 5306-00-007-8768


Cross Reference | NSN 5306-00-007-8768

Part Number Cage Code Manufacturer
106467-4-55 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
106467-4-56 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
A194-4-56 84256 AVIBANK MFG., INC.
AS194-4-55 84256 AVIBANK MFG., INC.
CA4510-4-55 29372 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
CA4510-4-56 29372 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
MS27576-4-55 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES
MS27576-4-55 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
MS27576-4-56 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES
MS27576-4-56 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Technical Data | NSN 5306-00-007-8768

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.282 INCHES MINIMUM AND 0.333 INCHES MAXIMUM
FASTENER LENGTH 3.856 INCHES MINIMUM AND 3.876 INCHES MAXIMUM
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-B-83050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
HARDNESS RATING 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE C3 DISHED HEXAGON
HEAD HEIGHT 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
GRIP LENGTH 3.438 INCHES MINIMUM AND 3.454 INCHES MAXIMUM
GRIP DIAMETER 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
SURFACE FINISH 63.0 MICROINCHES BEARING SURFACE OF HEAD 63.0 MICROINCHES GRIP
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 3.756 INCHES MINIMUM AND 3.786 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES W/RETAINING ELEMENT ON SHANK

Restrictions/Controls & Freight Information | NSN 5306-00-007-8768

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Category Code Description
No Freight Information