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1577A56 — HINGE,BUTT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1577A56: HINGE,BUTT.

The HINGE,BUTT is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, knuckle_type: FRICTION, pin_diameter: 0.375 INCHES NOMINAL IN, overall_length: 72.000 INCHES NOMINAL IN, performance_type: HEAVY DUTY, pin_removability: NONREMOVABLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-240-8253, 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
1577A56
NSN: 5340-01-240-8253
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
knuckle_typeFRICTION
pin_diameter0.375 INCHES NOMINAL IN
overall_length72.000 INCHES NOMINAL IN
performance_typeHEAVY DUTY
pin_removabilityNONREMOVABLE
style_designatorBUTT
material_thickness0.125 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
hinge_mounting_typeFULL SURFACE
pin_center_to_body_edge_distance1.500 INCHES NOMINAL IN
NSN5340-01-240-8253
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1577A56 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
•
PIN DIAMETER: 0.375 INCHES NOMINAL IN
•
REVERSIBLE FEATURE: NOT INCLUDED
•
STYLE DESIGNATOR: BUTT
•
PIN CENTER TO BODY EDGE DISTANCE: 1.500 INCHES NOMINAL IN
•
HINGE MOUNTING TYPE: FULL SURFACE
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
PIN REMOVABILITY: NONREMOVABLE
TECHNICAL CHARACTERISTICS
PIN DIAMETER0.375 INCHES NOMINAL IN
REVERSIBLE FEATURENOT INCLUDED
STYLE DESIGNATORBUTT
OVERALL LENGTH72.000 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE1.500 INCHES NOMINAL IN
HINGE MOUNTING TYPEFULL SURFACE
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
PIN REMOVABILITYNONREMOVABLE
MATERIALUNABLE TO DECODE
KNUCKLE TYPEFRICTION
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 1577A56?
1577A56 is a HINGE,BUTT.
What is the NSN for 1577A56?
1577A56 is cataloged in the U.S. Government catalog under NSN 5340-01-240-8253. 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.