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Helical Compression Spring Seat NSN 5340-00-987-5120

Item Description

A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. It is used to position the spring, but does not encase the spring or restrain lateral motion. It may be used in conjunction with a retainer, helical compression spring. Excludes washer (1), (as modified); seat, ball socket and holder, spring. See also rotor, engine poppet valve.

NSN 5340-00-987-5120 NSN: 5340-00-987-5120

Features and Characteristics

Overall Height
0.4000 inches
First Step Diameter
Between 0.3980 inches and 0.4040 inches
First Step Length
Between 0.0300 inches and 0.0600 inches
Second Step Diameter
Between 0.4900 inches and 0.4960 inches
Second Step Length
Between 0.0350 inches and 0.0450 inches
Bore Diameter
Between 0.2760 inches and 0.2860 inches
Material Hardness Rating
Between 75.0 rockwell superficial 15-n and 79.5 rockwell superficial 15-n
Second End Diameter
Between 0.3700 inches and 0.3800 inches
Design Type
Solid
End Diameter
Between 0.3700 inches and 0.3800 inches
Distance From End To First Step
Between 0.1930 inches and 0.2430 inches
Special Features
0.156 in. Diameter through holes equally spaced in 1st en (4 holes) ; 0.130 in. Distance from hole ctr to end; not casehardened
Material
Steel, qq-s-763, class 416
Material
Steel comp 416
Material Specification
Qq-s-763, class 416 federal specification single material response
FSC
5340 Commercial Hardware
NIIN
009875120
NSN
5340009875120

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
556771
Cage Code:
73030
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5340-00-987-5120
What are the manufacturers of nsn 5340009875120?
Does this nsn 5340009875120 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5340009875120
A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. it is used to position the spring, but does not encase the spring or restrain lateral motion. it may be used in conjunction with a retainer, helical compression spring. excludes washer (1), (as modified); seat, ball socket and holder, spring. see also rotor, engine poppet valve.
Does nsn 5340009875120 contain any precious metals?
Precious metal content is unknown.
Does nsn 5340009875120 contain any hazardous materials?
No information in HMIRS. Hazardous material unknown.
What is the ESD classification of nsn 5340009875120?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
24328
FIIG:
T319-E
App. Key:
EA
Cond. Code:
1
Status:
A

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