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BACH20AA-2-4 — LEAF,BUTT HINGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BACH20AA-2-4: 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, knuckle_length: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, overall_length: 9.990 INCHES MINIMUM AND 10.010 INCHES MAXIMUM IN, performance_type: NOT RATED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-898-9637, 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
BACH20AA-2-4
NSN: 5340-00-898-9637
FSC: 5340 — Hardware, Commercial
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hinge_pinNOT INCLUDED
knuckle_typeFRICTION
knuckle_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
overall_length9.990 INCHES MINIMUM AND 10.010 INCHES MAXIMUM IN
knuckle_quantity4
performance_typeNOT RATED
style_designatorBUTT BLANK
surface_treatmentCHROMATE OVERALL
end_knuckle_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
material_thickness0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
reversible_featureNOT INCLUDED
NSN5340-00-898-9637
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BACH20AA-2-4 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: 0.094 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT BLANK
•
PIN CENTER TO BODY EDGE DISTANCE: 0.750 INCHES NOMINAL IN
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
•
KNUCKLE QUANTITY: 4
TECHNICAL CHARACTERISTICS
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.094 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH9.990 INCHES MINIMUM AND 10.010 INCHES MAXIMUM IN
PIN CENTER TO BODY EDGE DISTANCE0.750 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
KNUCKLE QUANTITY4
END KNUCKLE LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
KNUCKLE LENGTH0.990 INCHES MINIMUM AND 1.010 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 1
VS20101-2-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 BACH20AA-2-4?
BACH20AA-2-4 is a LEAF,BUTT HINGE.
What parts can replace BACH20AA-2-4?
There is 1 known substitute for BACH20AA-2-4: VS20101-2-4. Substitute compatibility should be verified for your specific system.
What is the NSN for BACH20AA-2-4?
BACH20AA-2-4 is cataloged in the U.S. Government catalog under NSN 5340-00-898-9637. This indicates validated use in U.S. government and defense supply chains.
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