Restrictor Check Valve
668051-11
(NSN) National Stock Number
4820-00-733-1427
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
20520
Schedule B Code
-
Summary
3b 1st end thread class, right-hand 1st end thread direction, poppet flow control device, spring disk loading method, gasket seal (boss) 1st end connection style, threaded internal boss 1st end connection type
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 4 | - | - | 5 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | 9Z |
Identification
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 20520 | A530B0 | 1 | 1 |
Specifications
Thread Class
3b 1st end
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand 1st end
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Flow Control Device
poppet
Details
The part that controls the flow through the item.Disk Loading Method
spring
Details
The means of closing the item when inlet pressure decreases.Connection Style
gasket seal (boss) 1st end
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.Connection Type
threaded internal boss 1st end
Details
Indicates the type of connection/s/.Thread Quantity Per Inch
16 1st end
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Nominal Thread Size
0.750 inches 1st end
Details
A designation that is used for the purpose of general identification of the thread.Special Features
valve operation method: hydraulic
Details
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.Style Designator
straight thru
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
unjf 1st end
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 1008520-5 | 59364 | 5 | - | 5 | 2 | - | ZZ |
| 1008520-5 | 77068 | 5 | - | 3 | 9 | - | SB |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | U | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 64490 | - | P | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 576 | Z | Z |
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Manufacturer
LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY
CAGE: 98897
MARIETTA
, GA
, 30063-0001
UNITED STATES
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FAQs
Frequently asked questions for NSN 4820-00-733-1427
What is the NIIN of the NSN 4820-00-733-1427?
The National Item Identification Number (NIIN) of the NSN 4820-00-733-1427 is 00-733-1427
When the NSN 4820-00-733-1427 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-733-1427 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-733-1427 contain any hazardous material?
No data in HMIRS
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