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2D3-621-39 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2D3-621-39: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_series: UNIFIED NATIONAL COARSE (UNC), nominal_thread_size: 0.625 INCHES IN, end_item_identification: NIMITZ CLASS CVN, thread_quantity_per_inch: 11, part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-465-8724, 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
2D3-621-39
NSN: 5310-01-465-8724
FSC: 5310 — Nuts and Washers
CAGE: 34712 — LAKE SHORE SYSTEMS, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_seriesUNIFIED NATIONAL COARSE (UNC)
nominal_thread_size0.625 INCHES IN
end_item_identificationNIMITZ CLASS CVN
thread_quantity_per_inch11
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-465-8724
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2D3-621-39 · 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: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD QUANTITY PER INCH: 11
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.625 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
END ITEM IDENTIFICATIONNIMITZ CLASS CVN
THREAD QUANTITY PER INCH11
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
PL-2D3-621 PC 39Reference document
Same NSN cross-reference
Reference document — Secondary reference
2D3-621Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 2D3-621-39?
2D3-621-39 is a NUT,PLAIN,HEXAGON.
What parts can replace 2D3-621-39?
There are 2 known substitutes for 2D3-621-39: PL-2D3-621 PC 39, 2D3-621. Substitute compatibility should be verified for your specific system.
What is the NSN for 2D3-621-39?
2D3-621-39 is cataloged in the U.S. Government catalog under NSN 5310-01-465-8724. 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.