Product Details | CLOSE TOLERANCE SCREW

5305-00-842-1581 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: AS1040422, AS104-04-22, CA2730422, CA2730-4-22, CC00035422, CC00035-4-22, 5305-00-842-1581, 00-842-1581, 5305008421581, 008421581

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 23 DEC 1966 00-842-1581

Drawings & Photos | NSN 5305-00-842-1581


Cross Reference | NSN 5305-00-842-1581

Part Number Cage Code Manufacturer
AS104-04-22 84256 AVIBANK MFG., INC.
CA2730-4-22 29372 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
CC00035-4-22 81755 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AERONAUTICS

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Technical Data | NSN 5305-00-842-1581

Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.290 INCHES MAXIMUM
FASTENER LENGTH 1.813 INCHES MINIMUM AND 1.853 INCHES MAXIMUM
MATERIAL STEEL COMP 440C OVERALL
HEAD STYLE C49 FLAT CHAMFER
HEAD DIAMETER 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM
HEAD HEIGHT 0.263 INCHES NOMINAL
INTERNAL DRIVE STYLE D5 HEXAGON
WIDTH ACROSS FLATS 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
GRIP LENGTH 1.375 INCHES MINIMUM AND 1.395 INCHES MAXIMUM
GRIP DIAMETER 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM ALL HOLES
SHANK UNTHREADED HOLE DIAMETER 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM ALL HOLES
SPECIAL FEATURES RETAINING ELEMENT IN SHANK

Restrictions/Controls & Freight Information | NSN 5305-00-842-1581

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