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55051-3 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

55051-3: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: PLASTIC, duty_type: CONTINUOUS, time_delay: 0.002 SECONDS NOMINAL FIXED OPERATE AND RELEASE TIME, thread_class: 2A SINGLE MOUNTING FACILITY A, overall_width: 1.250 INCHES NOMINAL IN, overall_height: 2.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-369-3407, 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
55051-3
NSN: 4820-00-369-3407
NIINs: 003693407, 009059222
FSC: 4820 — Valves, Nonpowered
CAGE: 77068 — ALLIED-SIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO ELECTRODYNAMICS DIV (USA)
SPECIFICATIONS
materialPLASTIC
duty_typeCONTINUOUS
time_delay0.002 SECONDS NOMINAL FIXED OPERATE AND RELEASE TIME
thread_class2A SINGLE MOUNTING FACILITY A
coil_quantity1
overall_width1.250 INCHES NOMINAL IN
overall_height2.500 INCHES NOMINAL IN
overall_length1.750 INCHES NOMINAL IN
inside_diameter0.250 INCHES NOMINAL IN
shoulder_height0.115 INCHES NOMINAL IN
outside_diameter0.880 INCHES NOMINAL IN
style_designatorPLAIN
NSN4820-00-369-3407
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 55051-3 · 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
KEY FEATURES
•
SHOULDER HEIGHT: 0.115 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.880 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.221 INCHES NOMINAL IN
SHOULDER HEIGHT0.115 INCHES NOMINAL IN
OUTSIDE DIAMETER0.880 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
INSIDE DIAMETER0.250 INCHES NOMINAL IN
MATERIALPLASTIC
SUBSTITUTES & CROSS-REFERENCES 1
550513REVDPC550513Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55051-3?
55051-3 is a RELAY,ELECTROMAGNETIC.
What parts can replace 55051-3?
There is 1 known substitute for 55051-3: 550513REVDPC550513. Substitute compatibility should be verified for your specific system.
What is the NSN for 55051-3?
55051-3 is cataloged in the U.S. Government catalog under NSN 4820-00-369-3407. 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.