PartsTable
Technical Data Sheet
Download PDF

A51B20273-19 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A51B20273-19: LEAF,BUTT HINGE.

The LEAF,BUTT HINGE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hinge_pin: NOT INCLUDED, knuckle_type: FRICTION, overall_length: 5.760 INCHES NOMINAL IN, performance_type: NOT RATED, style_designator: BUTT PARALLEL HOLES. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-286-6230, 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
A51B20273-19
NSN: 5340-01-286-6230
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
overall_length5.760 INCHES NOMINAL IN
performance_typeNOT RATED
style_designatorBUTT PARALLEL HOLES
surface_treatmentPLASTIC EPOXY AND PLASTIC POLYAMIDE OVERALL
end_knuckle_length0.380 INCHES NOMINAL IN
material_thickness0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
reversible_featureNOT INCLUDED
mounting_hole_diameter0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
mounting_hole_quantity5
NSN5340-01-286-6230
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A51B20273-19 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: 5
•
REVERSIBLE FEATURE: NOT INCLUDED
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
KNUCKLE INSIDE DIAMETER: 0.093 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BUTT PARALLEL HOLES
•
MOUNTING HOLE DIAMETER: 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
•
PIN CENTER TO BODY EDGE DISTANCE: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY5
REVERSIBLE FEATURENOT INCLUDED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
KNUCKLE INSIDE DIAMETER0.093 INCHES NOMINAL IN
STYLE DESIGNATORBUTT PARALLEL HOLES
MOUNTING HOLE DIAMETER0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
OVERALL LENGTH5.760 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE0.625 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM 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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy A51B20273-19?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is A51B20273-19?
A51B20273-19 is a LEAF,BUTT HINGE.
What is the NSN for A51B20273-19?
A51B20273-19 is cataloged in the U.S. Government catalog under NSN 5340-01-286-6230. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — A51B20273-19

✓ 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.