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PartsTable / COMPONENT / 303615
303615 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, design_type: CLOSED, load_rating: 70.00 POUNDS MINIMUM AND 82.00 POUNDS MAXIMUM LBS, coil_quantity: 22, opening_width: 0.625 INCHES NOMINAL BOTH ENDS IN, style_designator: CYLINDRICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-053-0756, 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
303615
NSN: 5330-00-053-0756
FSC: 5330
CAGE: 80256 — OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
design_typeCLOSED
load_rating70.00 POUNDS MINIMUM AND 82.00 POUNDS MAXIMUM LBS
coil_quantity22
opening_width0.625 INCHES NOMINAL BOTH ENDS IN
style_designatorCYLINDRICAL
spring_free_length7.449 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_length_under_load7.625 INCHES NOMINAL IN
spring_free_outside_diameter0.750 INCHES NOMINAL IN
NSN5330-00-053-0756
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 303615 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
•
SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
303615Interchangeable
interchangeable cross-reference
interchangeable
LBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 303615?
303615 is a SPRING,HELICAL,EXTENSION.
What parts can replace 303615?
There are 2 known substitutes for 303615: 303615, LB. Substitute compatibility should be verified for your specific system.
What is the NSN for 303615?
303615 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-053-0756. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026