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Technical Data Sheet
PartsTable / COMPONENT / 55369
55369 ✓ Verified by PartsTable
InLine · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a InLine industrial component. Key specifications include material: STEEL CORROSION RESISTING, model_number: SM-50-11D, overall_width: 12.500 INCHES NOMINAL IN, current_rating: 4.200 AMPERES, overall_height: 8.125 INCHES NOMINAL IN, wattage_rating: 500.000 WATTS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-618-9529, 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
55369
NSN: 5310-00-618-9529
FSC: 5310
CAGE: 15280 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV ES DEFENSIVE SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
model_numberSM-50-11D
overall_width12.500 INCHES NOMINAL IN
current_rating4.200 AMPERES
overall_height8.125 INCHES NOMINAL IN
wattage_rating500.000 WATTS
overall_diameter12.500 INCHES NOMINAL IN
special_featuresMADE FROM 304 STAINLESS STEEL; THERMOSTATIC CONTROL WITH 36 INCH CAPILLARY; INDICATOR LIGHT INCLUDED;MOUNTED IN CABINET TOP; 1 INCH FLANGE; HARD WIRED INTO ELECTRICAL SYSTEM IN
functional_descriptionSOUP WARMER/SERVER
end_item_identificationNAVY EQUIPMENT
voltage_in_volts_and_current_type120.0 AC
part_name_assigned_by_controlling_agencyHOT FOOD WELL, ROUND DROP-IN SOUP WITH E-Z LOCK
NSN5310-00-618-9529
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 55369 · InLine ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL OVERALL
•
SURFACE FINISH: 63.0 MICROINCHES ALL SURFACES
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
THICKNESS: 0.035 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.035 INCHES NOMINAL IN
OVERALL DIAMETER0.875 INCHES NOMINAL IN
HOLE DIAMETER0.448 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
49435Interchangeable
interchangeable cross-reference
interchangeable
500160Interchangeable
interchangeable cross-reference
interchangeable
60922Interchangeable
interchangeable cross-reference
interchangeable
SM-50-11D/55369/120V-500WInterchangeable
interchangeable cross-reference
interchangeable
SM-50-11D/56590Interchangeable
interchangeable cross-reference
interchangeable
55369Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55369?
55369 is a WASHER,FLAT manufactured by InLine.
What parts can replace 55369?
There are 6 known substitutes for 55369: 49435, 500160, 60922 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 55369?
55369 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-618-9529. 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