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66666-3872 — INSERT,PANEL FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

66666-3872: INSERT,PANEL FASTENER.

The INSERT,PANEL FASTENER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_type: THREADEDTHREADED, overall_length: 0.615 INCHES MINIMUM AND 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM0.635 INCHES MAXIMUM IN, flange_diameter: 0.527 INCHES MINIMUM AND 0.527 INCHES MINIMUM AND 0.535 INCHES MAXIMUM0.535 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, material_accommodated_thickness: 0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.265 INCHES MAXIMUM0.265 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-408-9648, 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
66666-3872
NSN: 5325-01-408-9648
FSC: 5325 — Fastening Devices
CAGE: 06540 — NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_typeTHREADEDTHREADED
overall_length0.615 INCHES MINIMUM AND 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM0.635 INCHES MAXIMUM IN
flange_diameter0.527 INCHES MINIMUM AND 0.527 INCHES MINIMUM AND 0.535 INCHES MAXIMUM0.535 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
material_accommodated_thickness0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.265 INCHES MAXIMUM0.265 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-408-9648
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 66666-3872 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE DIAMETER: 0.527 INCHES MINIMUM AND 0.527 INCHES MINIMUM AND 0.535 INCHES MAXIMUM0.535 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL ACCOMMODATED THICKNESS: 0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.265 INCHES MAXIMUM0.265 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE TYPE: THREADEDTHREADED
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.527 INCHES MINIMUM AND 0.527 INCHES MINIMUM AND 0.535 INCHES MAXIMUM0.535 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL ACCOMMODATED THICKNESS0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.265 INCHES MAXIMUM0.265 INCHES MAXIMUM IN
OVERALL LENGTH0.615 INCHES MINIMUM AND 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM0.635 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE TYPETHREADEDTHREADED
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
10119379Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 66666-3872?
66666-3872 is a INSERT,PANEL FASTENER.
What parts can replace 66666-3872?
There is 1 known substitute for 66666-3872: 10119379. Substitute compatibility should be verified for your specific system.
What is the NSN for 66666-3872?
66666-3872 is cataloged in the U.S. Government catalog under NSN 5325-01-408-9648. 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.