5305-01-663-4307

Find complete technical information, availability, and procurement data for: 5305-01-663-4307
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-663-4307

Item Name Code

06657

Assigment Date

05/09/2017 (9 years ago)

An item designed to fit over the opening of an engine exhaust pipe or muffler to prevent the entrance of rain or foreign matter into the manifold section of a reciprocating engine while not in use. It is automatically opened when the engine is started by pressure exerted from the exhaust system. It is equipped with a hinging action and may or may not have a counter weight. Excludes:cap, protective, dust and moisture seal.

pan head style, 0.155 inches minimum and 0.167 inches maximum head diameter, 0.156 inches nominal thread length, 2a thread class, right-hand thread direction

Product Characteristics

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

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.156 inches nominal
Head Style: pan
Head Diameter: 0.155 inches minimum and 0.167 inches maximum
Head Height: 0.052 inches minimum and 0.053 inches maximum
Internal Drive Style: cross recess type 1
End Item Identification: aircraft flig
Nominal Thread Diameter: 0.086 inches
Thread Quantity Per Inch: 56
Screw Material: steel corrosion resisting
Head Surface Treatment: passivate
Screw Surface Treatment: passivate
Thread Series Designator: unc

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
R04519-00	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-663-4307?

The FSCG of the NSN 5305-01-663-4307 is 5305

Does the NSN 5305-01-663-4307 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-663-4307 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 5305-01-663-4307 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-663-4307 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 5305-01-663-4307 was assigned to the Federal Catalog?

It was assigned 9 years ago, on Tue, May 9, 2017