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H11542R1-86 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H11542R1-86: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: COPPER ALLOY 462, design_type: SOLID, end_diameter: 1.1840 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN, bore_diameter: 0.3110 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN, style_designator: SEAT, countersink_angle_in_deg: 45.0. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-226-6327, 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
H11542R1-86
NSN: 5340-01-226-6327
FSC: 5340 — Hardware, Commercial
CAGE: 09032 — TATE ANDALE, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 462
design_typeSOLID
end_diameter1.1840 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN
bore_diameter0.3110 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
style_designatorSEAT
countersink_angle_in_deg45.0
material_document_and_classificationQQ-B-637,ALLOY 462 HARD FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-226-6327
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H11542R1-86 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
•
COUNTERSINK ANGLE IN DEG: 45.0
•
END DIAMETER: 1.1840 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-637,ALLOY 462 HARD FED SPEC SINGLE MATERIAL RESPONSE
•
BORE DIAMETER: 0.3110 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 462
TECHNICAL CHARACTERISTICS
COUNTERSINK ANGLE IN DEG45.0
END DIAMETER1.1840 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-637,ALLOY 462 HARD FED SPEC SINGLE MATERIAL RESPONSE
BORE DIAMETER0.3110 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 462
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
N5365 PIECE 66Reference 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 H11542R1-86?
H11542R1-86 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace H11542R1-86?
There is 1 known substitute for H11542R1-86: N5365 PIECE 66. Substitute compatibility should be verified for your specific system.
What is the NSN for H11542R1-86?
H11542R1-86 is cataloged in the U.S. Government catalog under NSN 5340-01-226-6327. 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.