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5525490 — PIN,GROOVED,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5525490: PIN,GROOVED,HEADLESS.

The PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 1.625 INCHES NOMINAL IN, overall_length: 6.500 INCHES NOMINAL IN, first_end_style: RADIUS, undercut_radius: 0.062 INCHES NOMINAL IN, effective_length: 5.469 INCHES NOMINAL IN, second_end_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-340-8763, 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
5525490
NSN: 5315-01-340-8763
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter1.625 INCHES NOMINAL IN
overall_length6.500 INCHES NOMINAL IN
first_end_styleRADIUS
undercut_radius0.062 INCHES NOMINAL IN
effective_length5.469 INCHES NOMINAL IN
second_end_styleSQUARE
style_designatorGROOVE
undercut_diameter1.490 INCHES NOMINAL IN
first_end_locationTAPERED END
first_end_corner_radius0.125 INCHES NOMINAL IN
second_end_relationship_with_first_endNOT IDENTICAL
NSN5315-01-340-8763
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5525490 · 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 DIAMETER: 1.490 INCHES NOMINAL IN
•
FIRST END LOCATION: TAPERED END
•
FIRST END STYLE: RADIUS
•
STYLE DESIGNATOR: GROOVE
•
DIAMETER: 1.625 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
•
EFFECTIVE LENGTH: 5.469 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDERCUT DIAMETER1.490 INCHES NOMINAL IN
FIRST END LOCATIONTAPERED END
FIRST END STYLERADIUS
STYLE DESIGNATORGROOVE
DIAMETER1.625 INCHES NOMINAL IN
OVERALL LENGTH6.500 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
EFFECTIVE LENGTH5.469 INCHES NOMINAL IN
SECOND END STYLESQUARE
UNDERCUT RADIUS0.062 INCHES NOMINAL IN
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

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 5525490?
5525490 is a PIN,GROOVED,HEADLESS.
What is the NSN for 5525490?
5525490 is cataloged in the U.S. Government catalog under NSN 5315-01-340-8763. 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.