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1678565 PC450 — PIN,COTTER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1678565 PC450: PIN,COTTER.

The PIN,COTTER is a the manufacturer industrial component. Key specifications include diameter: 0.250 INCHES MAXIMUM IN, material: STEEL OVERALL, underloop_length: 2.125 INCHES MAXIMUM IN, end_item_identification: HATCH; MARINE HARDXWARE AND HULL DOORS. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-495-5802, 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
1678565 PC450
NSN: 5315-01-495-5802
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter0.250 INCHES MAXIMUM IN
materialSTEEL OVERALL
underloop_length2.125 INCHES MAXIMUM IN
end_item_identificationHATCH; MARINE HARDXWARE AND HULL DOORS
NSN5315-01-495-5802
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1678565 PC450 · 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
•
DIAMETER: 0.250 INCHES MAXIMUM IN
•
UNDERLOOP LENGTH: 2.125 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
DIAMETER0.250 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONHATCH; MARINE HARDXWARE AND HULL DOORS
UNDERLOOP LENGTH2.125 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 4
124-1678565Reference document
Same NSN cross-reference
Reference document — Secondary reference
1/4D X 2-1/8LReference document
Same NSN cross-reference
Reference document — Secondary reference
124-1678565 PC 450Reference document
Same NSN cross-reference
Reference document — Secondary reference
124-1678562 PC 450Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 1678565 PC450?
1678565 PC450 is a PIN,COTTER.
What parts can replace 1678565 PC450?
There are 4 known substitutes for 1678565 PC450: 124-1678565, 1/4D X 2-1/8L, 124-1678565 PC 450 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1678565 PC450?
1678565 PC450 is cataloged in the U.S. Government catalog under NSN 5315-01-495-5802. 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.