C3951-1

View detailed technical data, stock status, and sourcing information for: C3951-1
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Federal Supply Group

Vehicular Equipment Components

Federal Supply Classification

2590 Miscellaneous Vehicular Components

National Stock Number

2590-01-422-5641

Item Name Code

30128

Assigment Date

12/04/1995 (30 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.

chain retaining device type, vented, anti-surge i.c.c. type style designator, steel overall material, 4.500 inches nominal outside diameter, 2.000 inches nominal overall height

Product Characteristics

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

Outside Diameter: 4.500 inches nominal
Overall Height: 2.000 inches nominal
Retaining Device Type: chain
Material: steel overall
Style Designator: vented, anti-surge i.c.c. type

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
C3951-1	Filler Opening Cap

FAQs

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

What is the FSCG of the NSN 2590-01-422-5641?

The FSCG of the NSN 2590-01-422-5641 is 2590

Does the NSN 2590-01-422-5641 have a Schedule B code assigned?

Yes, the Schedule B code is 8309100000

Does NSN 2590-01-422-5641 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 2590-01-422-5641 contain precious materials?

Item does not contain precious metal.

Does NSN 2590-01-422-5641 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 2590-01-422-5641 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Mon, Dec 4, 1995