5305-00-040-9879

Find complete technical information, availability, and procurement data for: 5305-00-040-9879
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-040-9879

Item Name Code

29294

Assigment Date

11/08/1972 (53 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.

2.890 inches minimum and 2.937 inches maximum fastener length, 0.329 inches minimum and 0.385 inches maximum head diameter, 0.380 inches minimum and 0.447 inches maximum thread length, flat countersunk head style, 3a thread class

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 Length: 0.380 inches minimum and 0.447 inches maximum
Fastener Length: 2.890 inches minimum and 2.937 inches maximum
Head Style: flat countersunk
Head Diameter: 0.329 inches minimum and 0.385 inches maximum
Grip Diameter: 0.1885 inches minimum and 0.1895 inches maximum
Grip Length: 2.490 inches minimum and 2.510 inches maximum
Countersink Angle: 100.0 degrees nominal
Surface Finish: 32.0 microinches overall

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
53B333-40	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-040-9879?

The FSCG of the NSN 5305-00-040-9879 is 5305

Does NSN 5305-00-040-9879 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 5305-00-040-9879 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-040-9879 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 5305-00-040-9879 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Nov 8, 1972