Safety Relief Valve

RBAC-LBN-FAI
(NSN) National Stock Number
4820-01-287-7661
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
05488
Schedule B Code
8481400000
Summary

2b all ends thread class, right-hand all ends thread direction, disk flow control device, gasket seal(boss) all ends connection style, threaded internal tube all ends connection type, 0.562 inches all ends nominal thread size

DAC HCC DMIL RNCC
4 - - 3
RNVC SADC MSDS RNAAC
2 - - 9Z
Identification

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

INC FIIG Concept Condition
05488 A046B0 1 2
Specifications
Thread Class
2b all ends
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Direction
right-hand all ends
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
disk
Details The part that controls the flow through the item.
Connection Style
gasket seal(boss) all ends
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
Connection Type
threaded internal tube all ends
Details Indicates the type of connection/s/.
Nominal Thread Size
0.562 inches all ends
Details A designation that is used for the purpose of general identification of the thread.
Nominal Outside Diameter Tube Accommodated
0.375 inches all ends
Details The nominal length of a straight line which passes through the center of the accommodated tube,and terminates at the outside circumference.
Material
steel overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
zinc
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Style Designator
angle
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
Thread Series Designator
unf all ends
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.
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
- 594 Z 9
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FAQs
Frequently asked questions for NSN 4820-01-287-7661
What is the NIIN of the NSN 4820-01-287-7661?
The National Item Identification Number (NIIN) of the NSN 4820-01-287-7661 is 01-287-7661
When the NSN 4820-01-287-7661 was assigned to the Federal Catalog?
It was assigned 36 years ago, on Thu, Oct 27, 1988
Does the NSN 4820-01-287-7661 contain any precious metals?
Type/content is unknown
Does the NSN 4820-01-287-7661 contain any hazardous material?
No data in HMIRS

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