5305-01-521-5145

Find complete technical information, availability, and procurement data for: 5305-01-521-5145
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-521-5145

Item Name Code

29294

Assigment Date

06/24/2004 (22 years ago)

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.

flat chamfer head style, 3a thread class, right-hand thread direction, 0.761 inches minimum and 0.791 inches maximum fastener length, 0.276 inches minimum thread length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.276 inches minimum
Fastener Length: 0.761 inches minimum and 0.791 inches maximum
Head Style: flat chamfer
Head Diameter: 0.357 inches minimum and 0.373 inches maximum
Head Height: 0.122 inches minimum and 0.133 inches maximum
Spline Minor Diameter: 0.1105 inches minimum and 0.1205 inches maximum
Spline Major Diameter: 0.154 inches minimum and 0.156 inches maximum
Locking Feature: prevailing torque all metal design overall
Grip Diameter: 0.1890 inches minimum and 0.1895 inches maximum
Internal Drive Style: torx
End Item Identification: mv-22 aircraft
Nominal Thread Diameter: 0.190 inches
Grip Length: 0.490 inches minimum and 0.520 inches maximum
Thread Quantity Per Inch: 32
Criticality Code Justification: agav
Part Name Assigned By Controlling Agency: screw, pan head, close tolerance, short thread, six lobe
Special Features: "per asme b46.1. "d" diameter underside of head, root of threads and thread flanks 32 microinches ra. all other surfaces, 125 microinches ra."
Material: iron alloy 660 overall
Material Document And Classification: ams 5731 a286 assn std single material response or ams5732 a286 assn std single material response or ams 5737 a286 assn std single material response or ams 5853 a286 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: ams-qq-p-35, type ii or viii assn std single treatment response overall
Thread Series Designator: unjf

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
BACS12HW3AU8	Close Tolerance Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-521-5145?

The FSCG of the NSN 5305-01-521-5145 is 5305

Does the NSN 5305-01-521-5145 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-521-5145 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-521-5145 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-521-5145 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-521-5145 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Thu, Jun 24, 2004