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E821645 PIECE 18 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

E821645 PIECE 18: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 1012, material_document_and_classification: FED STD 66, COMP 1012 FED STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-208-5688, 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
E821645 PIECE 18
NSN: 5340-01-208-5688
FSC: 5340 — Hardware, Commercial
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialSTEEL COMP 1012
material_document_and_classificationFED STD 66, COMP 1012 FED STD SINGLE MATERIAL RESPONSE
NSN5340-01-208-5688
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E821645 PIECE 18 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66, COMP 1012 FED STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 1012
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66, COMP 1012 FED STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 1012
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 1
B213271Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 E821645 PIECE 18?
E821645 PIECE 18 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace E821645 PIECE 18?
There is 1 known substitute for E821645 PIECE 18: B213271. Substitute compatibility should be verified for your specific system.
What is the NSN for E821645 PIECE 18?
E821645 PIECE 18 is cataloged in the U.S. Government catalog under NSN 5340-01-208-5688. This indicates validated use in U.S. government and defense supply chains.
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