5305-01-540-0990

Find complete technical information, availability, and procurement data for: 5305-01-540-0990
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-540-0990

Item Name Code

29294

Assigment Date

05/09/2006 (20 years ago)

An item that can generate a fundamental frequency with a high degree of accuracy. Harmonics of this fundamental are then used as a reference point for checking throughout the radio spectrum. The standard may be stable crystal oscillator, noncrystal oscillator, tuning fork, atomic beam, molecular beam, gas cell, quantum mechanical resonator, or the like.

0.323 inches nominal thread length, 3a thread class, right-hand thread direction, 0.448 inches nominal fastener length, pan head style

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: 0.323 inches nominal
Fastener Length: 0.448 inches nominal
Head Style: pan
Head Diameter: 0.306 inches minimum and 0.322 inches maximum
Head Height: 0.105 inches minimum and 0.115 inches maximum
Grip Diameter: 0.1630 inches minimum and 0.1635 inches maximum
Internal Drive Style: cruciform ribbed
End Item Identification: apache attack helicopter
Nominal Thread Diameter: 0.1640 inches
Grip Length: 0.125 inches nominal
Thread Quantity Per Inch: 32
Part Name Assigned By Controlling Agency: bolt,pan head,close tolerance
Material: iron alloy 660 overall
Surface Treatment: passivate overall
Thread Series Designator: unjc

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
NAS7802U2	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-540-0990?

The FSCG of the NSN 5305-01-540-0990 is 5305

Does the NSN 5305-01-540-0990 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-540-0990 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 5305-01-540-0990 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-540-0990 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 5305-01-540-0990 was assigned to the Federal Catalog?

It was assigned 20 years ago, on Tue, May 9, 2006