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A51E20517-11 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A51E20517-11: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, knuckle_length: 1.000 INCHES NOMINAL IN, overall_length: 5.875 INCHES NOMINAL IN, performance_type: MEDIUM DUTY. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-007-9809, 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
A51E20517-11
NSN: 5340-00-007-9809
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length1.000 INCHES NOMINAL IN
overall_length5.875 INCHES NOMINAL IN
knuckle_quantity4
performance_typeMEDIUM DUTY
style_designatorBUTT BLANK
surface_treatmentANODIZE OVERALL
end_knuckle_length0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
material_thickness0.250 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
NSN5340-00-007-9809
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A51E20517-11 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
•
REVERSIBLE FEATURE: NOT INCLUDED
•
KNUCKLE INSIDE DIAMETER: 0.190 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT BLANK
•
PIN CENTER TO BODY EDGE DISTANCE: 2.300 INCHES NOMINAL IN
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 0.250 INCHES NOMINAL IN
•
KNUCKLE QUANTITY: 4
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.190 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH5.875 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE2.300 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.250 INCHES NOMINAL IN
KNUCKLE QUANTITY4
END KNUCKLE LENGTH0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
KNUCKLE LENGTH1.000 INCHES NOMINAL IN
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51E20517-11?
A51E20517-11 is a LEAF,BUTT HINGE.
What is the NSN for A51E20517-11?
A51E20517-11 is cataloged in the U.S. Government catalog under NSN 5340-00-007-9809. 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.