H249T4TT

View detailed technical data, stock status, and sourcing information for: H249T4TT
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-900-9743

Item Name Code

05487

Assigment Date

01/01/1960 (66 years ago)

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

3a all ends thread class, spring disk loading method, 500.0 fahrenheit single response maximum operating temp, right-hand all ends thread direction, poppet flow control device

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 all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 500.0 fahrenheit single response
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 6000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Material: steel corrosion resisting body
Material: steel corrosion resisting flow control device
Material: steel seat
Style Designator: straight thru
Thread Series Designator: unf all ends

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
H249T4TT	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-900-9743?

The FSCG of the NSN 4820-00-900-9743 is 4820

Does the NSN 4820-00-900-9743 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-900-9743 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 4820-00-900-9743 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-900-9743 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 4820-00-900-9743 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960