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4-10370-1 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4-10370-1: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OVERALL, hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, knuckle_length: 0.491 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN, overall_length: 3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM IN, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-045-3963, 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
4-10370-1
NSN: 5340-01-045-3963
FSC: 5340 — Hardware, Commercial
CAGE: 79U29 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length0.491 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
overall_length3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM IN
knuckle_quantity4
performance_typeNOT RATED
style_designatorBUTT BLANK
reversible_featureNOT INCLUDED
knuckle_inside_diameter0.067 INCHES NOMINAL IN
NSN5340-01-045-3963
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4-10370-1 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: 0.067 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BUTT BLANK
•
HINGE PIN: NOT INCLUDED
•
KNUCKLE QUANTITY: 4
•
KNUCKLE LENGTH: 0.491 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OVERALL
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.067 INCHES NOMINAL IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM IN
HINGE PINNOT INCLUDED
KNUCKLE QUANTITY4
KNUCKLE LENGTH0.491 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OVERALL
KNUCKLE TYPEFRICTION
PERFORMANCE TYPENOT RATED
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 4-10370-1?
4-10370-1 is a LEAF,BUTT HINGE.
What is the NSN for 4-10370-1?
4-10370-1 is cataloged in the U.S. Government catalog under NSN 5340-01-045-3963. 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.