Product Details | CLOSE TOLERANCE SCREW

5305-01-523-5729 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: BACB30MS3K4, 5305-01-523-5729, 01-523-5729, 5305015235729, 015235729

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 08 SEP 2004 01-523-5729

Drawings & Photos | NSN 5305-01-523-5729


Cross Reference | NSN 5305-01-523-5729

Part Number Cage Code Manufacturer
BACB30MS3K4 17446 HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
BACB30MS3K4 81205 THE BOEING COMPANY DBA BOEING

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Technical Data | NSN 5305-01-523-5729

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.190 INCHES
THREAD QUANTITY PER INCH 32
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.345 INCHES NOMINAL
FASTENER LENGTH 0.580 INCHES MINIMUM AND 0.610 INCHES MAXIMUM
MATERIAL TITANIUM ALLOY UNS R56400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT ALUMINUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION BMS10-85 TYPE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE C50 FLAT COUNTERSUNK
HEAD DIAMETER 0.345 INCHES MINIMUM AND 0.383 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D9 HIGH-TORQUE
GRIP LENGTH 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
GRIP DIAMETER 0.1881 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
III END ITEM IDENTIFICATION BOEING 757, AIRCRAFT

Restrictions/Controls & Freight Information | NSN 5305-01-523-5729

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.
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information