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1136PC186D — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1136PC186D: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: COPPER ALLOY, design_type: SOLID, end_diameter: 0.8437 INCHES NOMINAL IN, bore_diameter: 0.3125 INCHES NOMINAL IN, overall_height: 0.3125 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-972-8427, 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
1136PC186D
NSN: 5340-00-972-8427
FSC: 5340 — Hardware, Commercial
CAGE: 80256 — OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY
design_typeSOLID
end_diameter0.8437 INCHES NOMINAL IN
bore_diameter0.3125 INCHES NOMINAL IN
overall_height0.3125 INCHES NOMINAL IN
style_designatorSEAT
first_step_length0.0937 INCHES NOMINAL IN
first_step_diameter1.1875 INCHES NOMINAL IN
second_end_diameter0.8437 INCHES NOMINAL IN
distance_from_end_to_first_step0.0937 INCHES NOMINAL IN
NSN5340-00-972-8427
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1136PC186D 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: 1.1875 INCHES NOMINAL IN
•
END DIAMETER: 0.8437 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.8437 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.0937 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
FIRST STEP LENGTH: 0.0937 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.3125 INCHES NOMINAL IN
FIRST STEP DIAMETER1.1875 INCHES NOMINAL IN
END DIAMETER0.8437 INCHES NOMINAL IN
SECOND END DIAMETER0.8437 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.0937 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
FIRST STEP LENGTH0.0937 INCHES NOMINAL IN
BORE DIAMETER0.3125 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
553032Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 1136PC186D?
1136PC186D is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 1136PC186D?
There is 1 known substitute for 1136PC186D: 553032. Substitute compatibility should be verified for your specific system.
What is the NSN for 1136PC186D?
1136PC186D is cataloged in the U.S. Government catalog under NSN 5340-00-972-8427. 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.