Product Details | CLOSE TOLERANCE SCREW

5305-01-256-5792 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Part Alternates: NAS120632D, NAS1206-32D, 5305-01-256-5792, 01-256-5792, 5305012565792, 012565792

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 06 JUN 1987 01-256-5792

Drawings & Photos | NSN 5305-01-256-5792


Cross Reference | NSN 5305-01-256-5792

Part Number Cage Code Manufacturer
NAS1206-32D 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5305-01-256-5792

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.3650 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.391 INCHES NOMINAL
FASTENER LENGTH 2.376 INCHES MINIMUM AND 2.406 INCHES MAXIMUM
MATERIAL STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
HEAD STYLE C50 FLAT COUNTERSUNK
HEAD DIAMETER 0.704 INCHES MINIMUM AND 0.762 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D1 CROSS RECESS TYPE 1
GRIP LENGTH 2.1744 INCHES MINIMUM AND 2.2010 INCHES MAXIMUM
GRIP DIAMETER 0.3731 INCHES MINIMUM AND 0.3737 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 2.266 INCHES MINIMUM AND 2.276 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE
SPECIFICATION/STANDARD DATA 80205-NAS1206 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

Restrictions/Controls & Freight Information | NSN 5305-01-256-5792

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
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information