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401666 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
3M · NUT WASHER
PRODUCT OVERVIEW

401666: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a 3M industrial component. Key specifications include tip_type: CURVED, catheter_nominal_length: 110.0 CENTIMETERS CM. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-579-9883, 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
401666
NSN: 5315-00-579-9883
NIINs: 005799883, 014704878
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
tip_typeCURVED
catheter_nominal_length110.0 CENTIMETERS CM
NSN5315-00-579-9883
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 401666 · 3M ⚠ 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
•
FIRST END STYLE: SQUARE
•
PIN OVERALL DIAMETER: 0.0490 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 1.100 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FIRST END STYLESQUARE
PIN OVERALL DIAMETER0.0490 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN
PIN OVERALL LENGTH1.100 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL OVERALL
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 401666?
401666 is a PIN,STRAIGHT,HEADLESS manufactured by 3M.
What is the NSN for 401666?
401666 is cataloged in the U.S. Government catalog under NSN 5315-00-579-9883. 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.