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HP855104 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

HP855104: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 416, design_type: SOLID, end_diameter: 0.1900 INCHES NOMINAL IN, overall_height: 0.2800 INCHES NOMINAL IN, surface_treatment: PASSIVATE, first_step_diameter: 0.2450 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-494-8113, 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
HP855104
NSN: 5340-00-494-8113
FSC: 5340 — Hardware, Commercial
CAGE: 70236 — TACTAIR FLUID CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 416
design_typeSOLID
end_diameter0.1900 INCHES NOMINAL IN
overall_height0.2800 INCHES NOMINAL IN
surface_treatmentPASSIVATE
first_step_diameter0.2450 INCHES NOMINAL IN
material_hardness_rating39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
distance_from_end_to_first_step0.2150 INCHES NOMINAL IN
material_document_and_classificationQQ-S-763, CL 416 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-00-494-8113
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: HP855104 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: 0.2450 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.1900 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.2150 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763, CL 416 FED SPEC SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.2800 INCHES NOMINAL IN
FIRST STEP DIAMETER0.2450 INCHES NOMINAL IN
MATERIAL HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
END DIAMETER0.1900 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.2150 INCHES NOMINAL IN
DESIGN TYPESOLID
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763, CL 416 FED SPEC SINGLE MATERIAL RESPONSE
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 416
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
HP1131180-1Reference 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 HP855104?
HP855104 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace HP855104?
There is 1 known substitute for HP855104: HP1131180-1. Substitute compatibility should be verified for your specific system.
What is the NSN for HP855104?
HP855104 is cataloged in the U.S. Government catalog under NSN 5340-00-494-8113. 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.