PartsTable
Technical Data Sheet
PartsTable / MRO / 866-021
866-021 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The JACKSCREW,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include power_source: EXTERNAL, end_item_identification: FIGHTER (NON-HSP) SUPPORT AIRCRAFT F/A-18, criticality_code_justification: AGAV, part_name_assigned_by_controlling_agency: INAVY - SYSTEM RELIEF VALVE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-250-0227, 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
MRO→ MRO_GENERAL→ 866-021
NSN: 5331-00-250-0227
FSC: 5331 — O-RING
CAGE: 25184 — PARKER HANNIFIN CORPORATION DIV O-RING DIVISION (USA)
SPECIFICATIONS
power_sourceEXTERNAL
end_item_identificationFIGHTER (NON-HSP) SUPPORT AIRCRAFT F/A-18
criticality_code_justificationAGAV
part_name_assigned_by_controlling_agencyINAVY - SYSTEM RELIEF VALVE
NSN5331-00-250-0227
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 866-021 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: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CENTER HOLE DIAMETER: 0.920 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.051 INCHES MINIMUM AND 1.081 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER0.920 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.051 INCHES MINIMUM AND 1.081 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
203147Interchangeable
interchangeable cross-reference
interchangeable
A-020SR822-60Interchangeable
interchangeable cross-reference
interchangeable
GS570EM020Interchangeable
interchangeable cross-reference
interchangeable
MS29513-020Interchangeable
interchangeable cross-reference
interchangeable
622701B25Interchangeable
interchangeable cross-reference
interchangeable
R1392Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 866-021?
866-021 is a JACKSCREW,ELECTRICAL CONNECTOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 866-021?
There are 34 known substitutes for 866-021: 203147, A-020SR822-60, GS570EM020 and 31 more. Substitute compatibility should be verified for your specific system.
Is 866-021 still available?
866-021 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026