Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.5400 INCHES MINIMUM AND 0.5500 INCHES MAXIMUM IN, bore_diameter: 0.4480 INCHES NOMINAL IN, overall_height: 0.3120 INCHES NOMINAL IN, style_designator: SEAT. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System under NSN 5340-00-777-7189, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
1537R
NSN:5340-00-777-7189 FSC:5340 CAGE:36367 — P.K. LINDSAY CO., INC. DBA P.K. LINDSAY CO., INC. (USA)
SPECIFICATIONS
material
STEEL
design_type
SOLID
end_diameter
0.5400 INCHES MINIMUM AND 0.5500 INCHES MAXIMUM IN
bore_diameter
0.4480 INCHES NOMINAL IN
overall_height
0.3120 INCHES NOMINAL IN
style_designator
SEAT
features_provided
CASEHARDENED
first_step_diameter
0.6870 INCHES NOMINAL IN
fsc_application_data
COMPRESSOR VALVE SPRING SEAT
distance_from_end_to_first_step
0.2180 INCHES NOMINAL IN
NSN
5340-00-777-7189
COMPONENT DIAGRAM
KEY FEATURES
•
DESIGN TYPE: SOLID
•
DISTANCE FROM END TO FIRST STEP: 0.2180 INCHES NOMINAL IN
•
FSC APPLICATION DATA: COMPRESSOR VALVE SPRING SEAT
•
FEATURES PROVIDED: CASEHARDENED
•
STYLE DESIGNATOR: SEAT
•
END DIAMETER: 0.5400 INCHES MINIMUM AND 0.5500 INCHES MAXIMUM IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
DESIGN TYPE
SOLID
DISTANCE FROM END TO FIRST STEP
0.2180 INCHES NOMINAL IN
FSC APPLICATION DATA
COMPRESSOR VALVE SPRING SEAT
FEATURES PROVIDED
CASEHARDENED
STYLE DESIGNATOR
SEAT
END DIAMETER
0.5400 INCHES MINIMUM AND 0.5500 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is 1537R?
1537R is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 1537R?
There are 17 known substitutes for 1537R: 0A-08709-20-SW-SP, 0A08709SWSP, 0A0870920 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1537R?
1537R is cataloged in the Federal Logistics Information System under NSN 5340-00-777-7189. This indicates validated use in U.S. government and defense supply chains.
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