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A51B48503 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A51B48503: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, knuckle_length: 0.244 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN, overall_length: 2.105 INCHES NOMINAL IN, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-160-7791, 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
A51B48503
NSN: 5340-00-160-7791
FSC: 5340 — Hardware, Commercial
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length0.244 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
overall_length2.105 INCHES NOMINAL IN
knuckle_quantity4
performance_typeNOT RATED
style_designatorBUTT PARALLEL HOLES
end_knuckle_length0.160 INCHES NOMINAL IN
material_thickness0.220 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
hinge_mounting_typeFULL SURFACE
NSN5340-00-160-7791
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A51B48503 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: 2
•
REVERSIBLE FEATURE: NOT INCLUDED
•
KNUCKLE INSIDE DIAMETER: 0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT PARALLEL HOLES
•
MOUNTING HOLE DIAMETER: 0.186 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
PIN CENTER TO BODY EDGE DISTANCE: 1.000 INCHES NOMINAL IN
•
HINGE MOUNTING TYPE: FULL SURFACE
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY2
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT PARALLEL HOLES
MOUNTING HOLE DIAMETER0.186 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
OVERALL LENGTH2.105 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE1.000 INCHES NOMINAL IN
HINGE MOUNTING TYPEFULL SURFACE
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.220 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 1
A51B48503-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51B48503?
A51B48503 is a LEAF,BUTT HINGE.
What parts can replace A51B48503?
There is 1 known substitute for A51B48503: A51B48503-13. Substitute compatibility should be verified for your specific system.
What is the NSN for A51B48503?
A51B48503 is cataloged in the U.S. Government catalog under NSN 5340-00-160-7791. 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.