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3012516 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3012516: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.3900 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM IN, overall_height: 0.5500 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN, special_features: NOT CASEHARDENED, first_step_length: 0.1000 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-763-7582, 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
3012516
NSN: 5340-00-763-7582
FSC: 5340 — Hardware, Commercial
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.3900 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM IN
overall_height0.5500 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
special_featuresNOT CASEHARDENED
first_step_length0.1000 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM IN
first_step_diameter0.5600 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
second_step_diameter0.8920 INCHES MINIMUM AND 0.9020 INCHES MAXIMUM IN
material_hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
distance_from_end_to_first_step0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
NSN5340-00-763-7582
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3012516 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
•
FIRST STEP DIAMETER: 0.5600 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.3900 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
SECOND STEP DIAMETER: 0.8920 INCHES MINIMUM AND 0.9020 INCHES MAXIMUM IN
•
FIRST STEP LENGTH: 0.1000 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.5500 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
FIRST STEP DIAMETER0.5600 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
END DIAMETER0.3900 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
DESIGN TYPESOLID
SECOND STEP DIAMETER0.8920 INCHES MINIMUM AND 0.9020 INCHES MAXIMUM IN
FIRST STEP LENGTH0.1000 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM IN
SPECIAL FEATURESNOT CASEHARDENED
MATERIALSTEEL
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 3012516?
3012516 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 3012516?
3012516 is cataloged in the U.S. Government catalog under NSN 5340-00-763-7582. 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.