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330030305 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

330030305: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.9060 INCHES NOMINAL IN, bore_diameter: 0.6880 INCHES NOMINAL IN, overall_height: 0.5620 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-042-9555, 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
330030305
NSN: 5340-01-042-9555
FSC: 5340 — Hardware, Commercial
CAGE: F7265 — S.D.M.O. INDUSTRIES (FRA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.9060 INCHES NOMINAL IN
bore_diameter0.6880 INCHES NOMINAL IN
overall_height0.5620 INCHES NOMINAL IN
style_designatorSEAT
bore_taper_in_deg7.0
features_providedCASEHARDENED
first_step_length0.1880 INCHES NOMINAL IN
seat_angle_in_deg15.0
first_step_diameter1.3120 INCHES NOMINAL IN
second_end_diameter1.4380 INCHES NOMINAL IN
NSN5340-01-042-9555
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 330030305 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
•
COUNTERSINK ANGLE IN DEG: 45.0
•
FIRST STEP DIAMETER: 1.3120 INCHES NOMINAL IN
•
END DIAMETER: 0.9060 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 15.0
•
COUNTERSINK DIAMETER: 1.1250 INCHES NOMINAL IN
•
THIRD STEP DIAMETER: 1.7810 INCHES NOMINAL IN
•
SECOND END DIAMETER: 1.4380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.5620 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG45.0
FIRST STEP DIAMETER1.3120 INCHES NOMINAL IN
END DIAMETER0.9060 INCHES NOMINAL IN
SEAT ANGLE IN DEG15.0
COUNTERSINK DIAMETER1.1250 INCHES NOMINAL IN
THIRD STEP DIAMETER1.7810 INCHES NOMINAL IN
SECOND END DIAMETER1.4380 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.2500 INCHES NOMINAL IN
DESIGN TYPESOLID
SUBSTITUTES & CROSS-REFERENCES 3
205094Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
02.01 OPTION PP6188/2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
02.01 OPTION PP6188 REFERENCE 2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 330030305?
330030305 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 330030305?
There are 3 known substitutes for 330030305: 205094, 02.01 OPTION PP6188/2, 02.01 OPTION PP6188 REFERENCE 2. Substitute compatibility should be verified for your specific system.
What is the NSN for 330030305?
330030305 is cataloged in the U.S. Government catalog under NSN 5340-01-042-9555. 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.