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6404649 FIND 55 — NUT,PLAIN,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6404649 FIND 55: NUT,PLAIN,PLATE.

The NUT,PLAIN,PLATE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_height: 2.827 INCHES NOMINAL IN, plate_width: 4.760 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, plate_thickness: 0.311 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-386-8160, 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
6404649 FIND 55
NSN: 5310-01-386-8160
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_height2.827 INCHES NOMINAL IN
plate_width4.760 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
plate_thickness0.311 INCHES NOMINAL IN
special_featuresFOUR HOLES EACH 0.400 INCHES OUTSIDE DIAMETER;LOCATED THRU THE FLANGED BASE. IN
thread_directionRIGHT-HAND
nominal_thread_size2.000 INCHES IN
nut_mounting_provisionSTRAIGHT HOLES
thread_quantity_per_inch08
NSN5310-01-386-8160
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6404649 FIND 55 · OEM ⚠ 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
•
PLATE THICKNESS: 0.311 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
PLATE WIDTH: 4.760 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.000 INCHES IN
•
NUT HEIGHT: 2.827 INCHES NOMINAL IN
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.311 INCHES NOMINAL IN
THREAD SERIESUN
PLATE WIDTH4.760 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.000 INCHES IN
NUT HEIGHT2.827 INCHES NOMINAL IN
SPECIAL FEATURESFOUR HOLES EACH 0.400 INCHES OUTSIDE DIAMETER;LOCATED THRU THE FLANGED BASE. IN
THREAD CLASS3B
THREAD QUANTITY PER INCH08
MATERIALCOPPER ALLOY OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
6404651 FIND 54Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6404649 FIND 55?
6404649 FIND 55 is a NUT,PLAIN,PLATE.
What parts can replace 6404649 FIND 55?
There is 1 known substitute for 6404649 FIND 55: 6404651 FIND 54. Substitute compatibility should be verified for your specific system.
What is the NSN for 6404649 FIND 55?
6404649 FIND 55 is cataloged in the U.S. Government catalog under NSN 5310-01-386-8160. 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.