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C31B6518-2 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

C31B6518-2: 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: 1.691 INCHES NOMINAL IN, overall_length: 14.320 INCHES NOMINAL IN, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-117-8067, 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
C31B6518-2
NSN: 5340-01-117-8067
FSC: 5340 — Hardware, Commercial
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length1.691 INCHES NOMINAL IN
overall_length14.320 INCHES NOMINAL IN
knuckle_quantity5
performance_typeNOT RATED
special_featuresEND KNUCKLE LG AT ONE END IS 1.900,AT OTHER END 2.208,PIN CENTER TO BODY EDGE DISTANCE AT ONE END IS 2.120,AT OTHER END IS 2.469
style_designatorBUTT BLANK
material_thickness1.125 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
knuckle_inside_diameter0.257 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
NSN5340-01-117-8067
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C31B6518-2 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: 0.257 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT BLANK
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 1.125 INCHES NOMINAL IN
•
KNUCKLE QUANTITY: 5
•
KNUCKLE LENGTH: 1.691 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.257 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH14.320 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS1.125 INCHES NOMINAL IN
KNUCKLE QUANTITY5
KNUCKLE LENGTH1.691 INCHES NOMINAL IN
SPECIAL FEATURESEND KNUCKLE LG AT ONE END IS 1.900,AT OTHER END 2.208,PIN CENTER TO BODY EDGE DISTANCE AT ONE END IS 2.120,AT OTHER END IS 2.469
MATERIALALUMINUM ALLOY 2024 OVERALL
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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C31B6518-2?
C31B6518-2 is a LEAF,BUTT HINGE.
What is the NSN for C31B6518-2?
C31B6518-2 is cataloged in the U.S. Government catalog under NSN 5340-01-117-8067. 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.