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655523 — PIN,GROOVED,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

655523: PIN,GROOVED,HEADLESS.

The PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include end_item_identification: PACER SPECIAL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-320-0324, 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
655523
NSN: 5315-00-320-0324
NIINs: 003200324, 013246377
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
end_item_identificationPACER SPECIAL
NSN5315-00-320-0324
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 655523 · 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: 0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.472 INCHES MINIMUM AND 0.476 INCHES MAXIMUM IN
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STYLE DESIGNATOR: GROOVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.4995 INCHES MINIMUM AND 0.4998 INCHES MAXIMUM IN
•
EFFECTIVE LENGTH: 2.921 INCHES MINIMUM AND 2.934 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.472 INCHES MINIMUM AND 0.476 INCHES MAXIMUM IN
STYLE DESIGNATORGROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.4995 INCHES MINIMUM AND 0.4998 INCHES MAXIMUM IN
OVERALL LENGTH3.188 INCHES NOMINAL IN
EFFECTIVE LENGTH2.921 INCHES MINIMUM AND 2.934 INCHES MAXIMUM IN
SPECIAL FEATURESONE END TAPPED PARALLEL W/CENTERLINE 1/4-28 TAP 0.375 IN. DEEP; ONE 0.125 IN. DIA THRU HOLE LOCATED PERPENDICULAR W/CENTERLINE 0.812 IN. FROM TAPPED END IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 4140 OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 655523?
655523 is a PIN,GROOVED,HEADLESS.
What is the NSN for 655523?
655523 is cataloged in the U.S. Government catalog under NSN 5315-00-320-0324. 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.