PartsTable
Technical Data Sheet
Download PDF

124-5794558 PC 9 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

124-5794558 PC 9: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL UNS K02102, design_type: SOLID, end_diameter: 6.8125 INCHES NOMINAL IN, overall_height: 1.2500 INCHES NOMINAL IN, style_designator: SEAT, spherical_seat_top_radius: 0.2500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-475-0121, 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
124-5794558 PC 9
NSN: 5340-01-475-0121
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL UNS K02102
design_typeSOLID
end_diameter6.8125 INCHES NOMINAL IN
overall_height1.2500 INCHES NOMINAL IN
style_designatorSEAT
spherical_seat_top_radius0.2500 INCHES NOMINAL IN
distance_from_end_to_first_step0.7500 INCHES NOMINAL IN
material_document_and_classificationMIL-S-22698, CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-475-0121
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 124-5794558 PC 9 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
•
END DIAMETER: 6.8125 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.7500 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-22698, CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
•
SPHERICAL SEAT TOP RADIUS: 0.2500 INCHES NOMINAL IN
•
MATERIAL: STEEL UNS K02102
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.2500 INCHES NOMINAL IN
END DIAMETER6.8125 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.7500 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-22698, CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
SPHERICAL SEAT TOP RADIUS0.2500 INCHES NOMINAL IN
MATERIALSTEEL UNS K02102
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
Ready to buy 124-5794558 PC 9?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 124-5794558 PC 9?
124-5794558 PC 9 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 124-5794558 PC 9?
124-5794558 PC 9 is cataloged in the U.S. Government catalog under NSN 5340-01-475-0121. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 124-5794558 PC 9

✓ 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.