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492155 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

492155: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 630, design_type: SOLID, end_diameter: 0.8800 INCHES NOMINAL IN, bore_diameter: 0.7550 INCHES NOMINAL IN, overall_height: 0.7600 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-920-3610, 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
492155
NSN: 5340-00-920-3610
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 630
design_typeSOLID
end_diameter0.8800 INCHES NOMINAL IN
bore_diameter0.7550 INCHES NOMINAL IN
overall_height0.7600 INCHES NOMINAL IN
style_designatorSEAT
first_step_length0.1590 INCHES NOMINAL IN
seat_angle_in_deg45.0
surface_treatmentPASSIVATE
first_step_diameter0.9490 INCHES NOMINAL IN
second_end_diameter1.4470 INCHES NOMINAL IN
fsc_application_dataSTARTER,ENGINE,AIRCRAFT
NSN5340-00-920-3610
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 492155 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FSC APPLICATION DATA: STARTER,ENGINE,AIRCRAFT
•
FIRST STEP DIAMETER: 0.9490 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.8800 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
SECOND END DIAMETER: 1.4470 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.5100 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.7600 INCHES NOMINAL IN
FSC APPLICATION DATASTARTER,ENGINE,AIRCRAFT
FIRST STEP DIAMETER0.9490 INCHES NOMINAL IN
MATERIAL HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
END DIAMETER0.8800 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
SECOND END DIAMETER1.4470 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.5100 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 492155?
492155 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 492155?
492155 is cataloged in the U.S. Government catalog under NSN 5340-00-920-3610. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.