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4077838 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4077838: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, overall_length: 0.800 INCHES NOMINAL IN, performance_type: NOT RATED, style_designator: BUTT BLANK. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-327-3647, 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
4077838
NSN: 5340-01-327-3647
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
overall_length0.800 INCHES NOMINAL IN
knuckle_quantity2
performance_typeNOT RATED
style_designatorBUTT BLANK
end_knuckle_length0.270 INCHES NOMINAL IN
material_thickness0.080 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
knuckle_inside_diameter0.105 INCHES NOMINAL IN
pin_center_to_body_edge_distance0.440 INCHES NOMINAL IN
NSN5340-01-327-3647
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4077838 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: 0.105 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BUTT BLANK
•
PIN CENTER TO BODY EDGE DISTANCE: 0.440 INCHES NOMINAL IN
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 0.080 INCHES NOMINAL IN
•
KNUCKLE QUANTITY: 2
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.105 INCHES NOMINAL IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH0.800 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE0.440 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.080 INCHES NOMINAL IN
KNUCKLE QUANTITY2
END KNUCKLE LENGTH0.270 INCHES NOMINAL IN
MATERIALNICKEL ALLOY 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 1
5340PL0850165Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4077838?
4077838 is a LEAF,BUTT HINGE.
What parts can replace 4077838?
There is 1 known substitute for 4077838: 5340PL0850165. Substitute compatibility should be verified for your specific system.
What is the NSN for 4077838?
4077838 is cataloged in the U.S. Government catalog under NSN 5340-01-327-3647. 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.