Product Details | CLOSE TOLERANCE SCREW

5305-01-576-3781 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: NAS17904R3, NAS1790-4R3, 5305-01-576-3781, 01-576-3781, 5305015763781, 015763781

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 29 JUL 2009 01-576-3781

Demand History | NSN 5305-01-576-3781

Part Number Request Date QTY Origin
NAS17904R3 2006-08-220 20 Vietnam

Cross Reference | NSN 5305-01-576-3781

Part Number Cage Code Manufacturer
NAS1790-4R3 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5305-01-576-3781

Characteristic Specifications
THREAD DIRECTION RIGHT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCY BOLT, 100 DEGREE FLUSH HEAD, 160,000 PSI UTS
HEAD STYLE FLAT COUNTERSUNK
INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
HEAD DIAMETER 0.464 INCHES MINIMUM AND 0.506 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
SURFACE TREATMENT CADMIUM OVERALL
GRIP LENGTH 0.188 NOMINAL INCHES
THREAD QUANTITY PER INCH 28
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
END ITEM IDENTIFICATION NIMROD MRA4; NIMROD 2000; AIR RECONNAISSANCE
FASTENER LENGTH 0.613 INCHES NOMINAL
THREAD LENGTH 0.425 INCHES NOMINAL
THREAD SERIES DESIGNATOR UNJF
MATERIAL STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL
GRIP DIAMETER 0.189 NOMINAL INCHES
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD CLASS 3A

Restrictions/Controls & Freight Information | NSN 5305-01-576-3781

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:QStrategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.”
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