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1581A371 — HINGE,BUTT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1581A371: HINGE,BUTT.

The HINGE,BUTT is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, body_width: 36.000 INCHES NOMINAL IN, rising_pin: NOT INCLUDED, knuckle_type: FRICTION, knuckle_quantity: 48, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-236-5822, 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
1581A371
NSN: 5340-01-236-5822
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
body_width36.000 INCHES NOMINAL IN
rising_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_quantity48
performance_typeNOT RATED
pin_removabilityREMOVABLE
style_designatorBUTT
material_thickness0.050 INCHES NOMINAL IN
reversible_featureINCLUDED
hinge_mounting_typeFULL SURFACE
pin_center_to_body_edge_distance1.000 INCHES NOMINAL IN
NSN5340-01-236-5822
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1581A371 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: INCLUDED
•
BODY WIDTH: 36.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BUTT
•
PIN CENTER TO BODY EDGE DISTANCE: 1.000 INCHES NOMINAL IN
•
HINGE MOUNTING TYPE: FULL SURFACE
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
PIN REMOVABILITY: REMOVABLE
•
KNUCKLE QUANTITY: 48
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATUREINCLUDED
BODY WIDTH36.000 INCHES NOMINAL IN
STYLE DESIGNATORBUTT
PIN CENTER TO BODY EDGE DISTANCE1.000 INCHES NOMINAL IN
HINGE MOUNTING TYPEFULL SURFACE
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
PIN REMOVABILITYREMOVABLE
KNUCKLE QUANTITY48
MATERIALUNABLE TO DECODE
RISING PINNOT INCLUDED
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
A9654-SSReference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 1581A371?
1581A371 is a HINGE,BUTT.
What parts can replace 1581A371?
There is 1 known substitute for 1581A371: A9654-SS. Substitute compatibility should be verified for your specific system.
What is the NSN for 1581A371?
1581A371 is cataloged in the U.S. Government catalog under NSN 5340-01-236-5822. 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.