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280021 — FUSEHOLDER,EXTRACTOR POST

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

280021: FUSEHOLDER,EXTRACTOR POST.

The FUSEHOLDER,EXTRACTOR POST is a the manufacturer industrial component. Key specifications include material: PLASTIC PHENOLIC BODY, body_style: PANEL MOUNTED TYPE, lens_color: CLEAR, shaft_type: ROUND, MILLED, SPRING SLIT SINGLE ACTUATOR, corner_shape: SQUARE ALL CORNERS, shaft_length: 0.562 INCHES NOMINAL SINGLE ACTUATOR IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-056-2395, 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→ 280021
NSN: 4820-00-056-2395
NIINs: 000562395, 002880977, 008897581, 010193685
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialPLASTIC PHENOLIC BODY
body_stylePANEL MOUNTED TYPE
lens_colorCLEAR
shaft_typeROUND, MILLED, SPRING SLIT SINGLE ACTUATOR
corner_shapeSQUARE ALL CORNERS
shaft_length0.562 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
hole_diameter0.1880 INCHES NOMINAL FIRST IN
overall_width1.438 INCHES NOMINAL IN
pole_quantity2 SINGLE SECTION REAR
terminal_typeCLIP
thread_length0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
NSN4820-00-056-2395
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 280021 · 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 2
ND5080PC21Reference document
Same NSN cross-reference
Reference document — Secondary reference
21ND5080Reference 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 280021?
280021 is a FUSEHOLDER,EXTRACTOR POST. It is classified as a MRO (MRO_GENERAL).
What parts can replace 280021?
There are 2 known substitutes for 280021: ND5080PC21, 21ND5080. Substitute compatibility should be verified for your specific system.
What is the NSN for 280021?
280021 is cataloged in the U.S. Government catalog under NSN 4820-00-056-2395. 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.