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5166480 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5166480: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, recess_angle: 90.0 DEGREES NOMINAL, recess_depth: 0.040 INCHES NOMINAL IN, hole_diameter: 1.379 INCHES MINIMUM AND 1.381 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES COUNTERBORE WALL, recess_diameter: 1.419 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-516-6480, 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
5166480
NSN: 5310-00-516-6480
FSC: 5310 — Nuts and Washers
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
recess_angle90.0 DEGREES NOMINAL
recess_depth0.040 INCHES NOMINAL IN
hole_diameter1.379 INCHES MINIMUM AND 1.381 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES COUNTERBORE WALL
recess_diameter1.419 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN
outside_diameter3.063 INCHES NOMINAL IN
style_designatorRECESSED
surface_treatmentOXIDE FILM OVERALL
material_thickness0.313 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
NSN5310-00-516-6480
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5166480 · 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
•
SURFACE FINISH: 63.0 MICROINCHES COUNTERBORE WALL
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 3.063 INCHES NOMINAL IN
•
RECESS DEPTH: 0.040 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.313 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
•
RECESS DIAMETER: 1.419 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN
•
SURFACE TREATMENT: OXIDE FILM OVERALL
•
MINIMUM YIELD STRENGTH: 45000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES COUNTERBORE WALL
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER3.063 INCHES NOMINAL IN
RECESS DEPTH0.040 INCHES NOMINAL IN
MATERIAL THICKNESS0.313 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
RECESS DIAMETER1.419 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN
SURFACE TREATMENTOXIDE FILM OVERALL
MINIMUM YIELD STRENGTH45000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
HOLE DIAMETER1.379 INCHES MINIMUM AND 1.381 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
QAP-EQ002Reference document
Same NSN cross-reference
Reference document — Secondary reference
QAP-EQ001Reference document
Same NSN cross-reference
Reference document — Secondary 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 5166480?
5166480 is a WASHER,RECESSED.
What parts can replace 5166480?
There are 2 known substitutes for 5166480: QAP-EQ002, QAP-EQ001. Substitute compatibility should be verified for your specific system.
What is the NSN for 5166480?
5166480 is cataloged in the U.S. Government catalog under NSN 5310-00-516-6480. 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.