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6406620-80 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6406620-80: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include diameter: 1.873 INCHES MINIMUM AND 1.874 INCHES MAXIMUM IN, material: NICKEL ALLOY K-500 OVERALL, head_style: SQUARE, undercut_width: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, first_end_style: SQUARE, style_designator: GROOVE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-429-8444, 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
6406620-80
NSN: 5315-01-429-8444
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter1.873 INCHES MINIMUM AND 1.874 INCHES MAXIMUM IN
materialNICKEL ALLOY K-500 OVERALL
head_styleSQUARE
undercut_width0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
first_end_styleSQUARE
style_designatorGROOVE
under_head_length1.171 INCHES NOMINAL IN
NSN5315-01-429-8444
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6406620-80 · 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
•
UNDERCUT WIDTH: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
UNDER HEAD LENGTH: 1.171 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
•
STYLE DESIGNATOR: GROOVE
•
DIAMETER: 1.873 INCHES MINIMUM AND 1.874 INCHES MAXIMUM IN
•
HEAD STYLE: SQUARE
•
MATERIAL: NICKEL ALLOY K-500 OVERALL
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
UNDER HEAD LENGTH1.171 INCHES NOMINAL IN
FIRST END STYLESQUARE
STYLE DESIGNATORGROOVE
DIAMETER1.873 INCHES MINIMUM AND 1.874 INCHES MAXIMUM IN
HEAD STYLESQUARE
MATERIALNICKEL ALLOY K-500 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 2
211075187Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
585-6406620-80Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6406620-80?
6406620-80 is a PIN,GROOVED,HEADED.
What parts can replace 6406620-80?
There are 2 known substitutes for 6406620-80: 211075187, 585-6406620-80. Substitute compatibility should be verified for your specific system.
What is the NSN for 6406620-80?
6406620-80 is cataloged in the U.S. Government catalog under NSN 5315-01-429-8444. 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.