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Technical Data Sheet
PartsTable / COMPONENT / 539LX
539LX ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The LEVER,LOCK-RELEASE is a the manufacturer industrial component. Key specifications include special_features: ONE THREADED MTG HOLE IN HUB; HEAT TREAT LEVER TO R"C" 45-50; HANDLE LENGTH TO CENTER HOLE 0.653 IN. IN, surface_treatment: PHOSPHATE OVERALL.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-399-7877, 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
539LX
NSN: 5340-00-399-7877
FSC: 5340
CAGE: 27361 — BURKE PRODUCTS INC (USA)
SPECIFICATIONS
special_featuresONE THREADED MTG HOLE IN HUB; HEAT TREAT LEVER TO R"C" 45-50; HANDLE LENGTH TO CENTER HOLE 0.653 IN. IN
surface_treatmentPHOSPHATE OVERALL
NSN5340-00-399-7877
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 539LX 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
•
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESONE THREADED MTG HOLE IN HUB; HEAT TREAT LEVER TO R"C" 45-50; HANDLE LENGTH TO CENTER HOLE 0.653 IN. IN
SURFACE TREATMENTPHOSPHATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
506-9770-002Interchangeable
interchangeable cross-reference
interchangeable
1155-1Interchangeable
interchangeable cross-reference
interchangeable
53875Interchangeable
interchangeable cross-reference
interchangeable
49751Interchangeable
interchangeable cross-reference
interchangeable
27301Interchangeable
interchangeable cross-reference
interchangeable
R51Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 539LX?
539LX is a LEVER,LOCK-RELEASE.
What parts can replace 539LX?
There are 9 known substitutes for 539LX: 506-9770-002, 1155-1, 53875 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 539LX?
539LX is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-399-7877. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026