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6404324 PIECE 6 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6404324 PIECE 6: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: ROUND, nut_diameter: 1.998 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN, thread_class: 3B, nut_thickness: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-399-3076, 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
6404324 PIECE 6
NSN: 5310-01-399-3076
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleROUND
nut_diameter1.998 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
thread_class3B
nut_thickness1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
thread_seriesUNF
special_featuresTHREADED ONE END 0.380 IN. MIN IN
thread_directionRIGHT-HAND
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch28
material_document_and_classificationQQ-N-286, TY 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-399-3076
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6404324 PIECE 6 · 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
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-286, TY 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT DIAMETER: 1.998 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
•
NUT THICKNESS: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286, TY 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NUT DIAMETER1.998 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
NUT THICKNESS1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
SPECIAL FEATURESTHREADED ONE END 0.380 IN. MIN IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
NUT STYLEROUND
THREAD CLASS3B
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 6404324 PIECE 6?
6404324 PIECE 6 is a NUT,PLAIN,ROUND.
What is the NSN for 6404324 PIECE 6?
6404324 PIECE 6 is cataloged in the U.S. Government catalog under NSN 5310-01-399-3076. 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.