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4F55657-101A — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4F55657-101A: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, knuckle_length: 0.600 INCHES NOMINAL IN, overall_length: 42.600 INCHES NOMINAL IN, knuckle_quantity: 43, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-757-8875, 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
4F55657-101A
NSN: 5340-00-757-8875
FSC: 5340 — Hardware, Commercial
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length0.600 INCHES NOMINAL IN
overall_length42.600 INCHES NOMINAL IN
knuckle_quantity43
performance_typeNOT RATED
style_designatorBUTT PARALLEL HOLES
end_knuckle_length0.470 INCHES NOMINAL IN
material_thickness0.078 INCHES NOMINAL IN
mounting_hole_quantity19
knuckle_inside_diameter0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
pin_center_to_body_edge_distance1.065 INCHES NOMINAL IN
NSN5340-00-757-8875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4F55657-101A 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: 19
•
KNUCKLE INSIDE DIAMETER: 0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT PARALLEL HOLES
•
PIN CENTER TO BODY EDGE DISTANCE: 1.065 INCHES NOMINAL IN
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
KNUCKLE QUANTITY: 43
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY19
KNUCKLE INSIDE DIAMETER0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT PARALLEL HOLES
OVERALL LENGTH42.600 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE1.065 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
KNUCKLE QUANTITY43
END KNUCKLE LENGTH0.470 INCHES NOMINAL IN
KNUCKLE LENGTH0.600 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4F55657-101A?
4F55657-101A is a LEAF,BUTT HINGE.
What is the NSN for 4F55657-101A?
4F55657-101A is cataloged in the U.S. Government catalog under NSN 5340-00-757-8875. 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.