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6520-80-401-2101 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6520-80-401-2101: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include hinge_pin: NOT INCLUDED, overall_length: 22.480 INCHES MINIMUM AND 22.520 INCHES MAXIMUM IN, performance_type: NOT RATED, material_thickness: 1.000 INCHES NOMINAL IN, reversible_feature: NOT INCLUDED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-939-8649, 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
6520-80-401-2101
NSN: 5340-00-939-8649
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
hinge_pinNOT INCLUDED
overall_length22.480 INCHES MINIMUM AND 22.520 INCHES MAXIMUM IN
knuckle_quantity3
performance_typeNOT RATED
material_thickness1.000 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
mounting_hole_quantity5
NSN5340-00-939-8649
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6520-80-401-2101 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 5
•
REVERSIBLE FEATURE: NOT INCLUDED
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 1.000 INCHES NOMINAL IN
•
KNUCKLE QUANTITY: 3
•
PERFORMANCE TYPE: NOT RATED
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY5
REVERSIBLE FEATURENOT INCLUDED
OVERALL LENGTH22.480 INCHES MINIMUM AND 22.520 INCHES MAXIMUM IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS1.000 INCHES NOMINAL IN
KNUCKLE QUANTITY3
PERFORMANCE TYPENOT RATED
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 6520-80-401-2101?
6520-80-401-2101 is a LEAF,BUTT HINGE.
What is the NSN for 6520-80-401-2101?
6520-80-401-2101 is cataloged in the U.S. Government catalog under NSN 5340-00-939-8649. 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.