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20457 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

20457: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include special_features: USED ON VALVE 1660008594010, end_item_identification: B-52H AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-055-1456, 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→ 20457
NSN: 4820-00-055-1456
NIINs: 000551456, 001788767, 003546387, 003946543, 004344260, 009163504, 016983895
FSC: 4820 — Valves, Nonpowered
CAGE: 99643 — EATON AEROSPACE LLC DBA EATON AEROSPACE JACKSON (USA)
SPECIFICATIONS
special_featuresUSED ON VALVE 1660008594010
end_item_identificationB-52H AIRCRAFT
NSN4820-00-055-1456
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20457 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 20457?
20457 is a BRUSH,ELECTRICAL CONTACT. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 20457?
20457 is cataloged in the U.S. Government catalog under NSN 4820-00-055-1456. This indicates validated use in U.S. government and defense supply chains.
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