1655499

View detailed technical data, stock status, and sourcing information for: 1655499
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-109-4156

Item Name Code

35935

Assigment Date

08/02/1968 (58 years ago)

A valve designed to relieve internal pressure from gear housings, automotive axles, differentials, transmissions and the like. May or may not be threaded on one end. For items with relief pressure ratings see valve (1), safety relief.

threaded internal pipe 1st end connection type, threaded external pipe 2nd end connection type, plain (pipe) 2nd end connection style, plain,optional end(pipe) 1st end connection style, right-hand all ends 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 Direction: right-hand all ends
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Nominal Thread Size: 0.250 inches all ends
Material: steel overall
Surface Treatment: cadmium
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-184-9618	No Name Available	01/01/1984
2805-00-218-1248	No Name Available	01/01/1977
2805-00-248-1623	No Name Available	06/01/1987

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
11630591	Vent Valve
117A119	Vent Valve
117AX47C	Vent Valve
1655499	Vent Valve
4820001094156	Vent Valve
6421349	Vent Valve
967397R91	Vent Valve
FV127	Vent Valve

FAQs

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

What is the FSCG of the NSN 4820-00-109-4156?

The FSCG of the NSN 4820-00-109-4156 is 4820

Does the NSN 4820-00-109-4156 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-109-4156 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 4820-00-109-4156 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-109-4156 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 4820-00-109-4156 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Aug 2, 1968