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424493-2 — ARM,BRAKE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

424493-2: ARM,BRAKE.

The ARM,BRAKE is a the manufacturer industrial component. Key specifications include material: STEEL, peripheral_diameter: 4.748 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN, center_hole_diameter: 4.003 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN, cross-sectional_height: 1.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-309-4620, 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
424493-2
NSN: 5330-01-309-4620
NIINs: 013094620, 013384606
FSC: 5330 — Packing and Gasket Materials
CAGE: 0RK88 — KOCSIS TECHNOLOGIES INC DBA KOCSIS TECHNOLOGIES INC (USA)
SPECIFICATIONS
materialSTEEL
special_featuresINTERNAL SPUR GEAR,62 TEETH;INCLUDES ROLLER SWAGE SPHERICAL BRG(1);CASEHARDENED;INTEGRAL THUMB RELEASE PROTRUSION-NOT INCL.;SURFACE TREAT.-CADMIUM PLATED
peripheral_diameter4.748 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
center_hole_diameter4.003 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN
cross-sectional_height1.000 INCHES NOMINAL IN
cross-sectional_shape_styleV
NSN5330-01-309-4620
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 424493-2 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
•
CROSS-SECTIONAL HEIGHT: 1.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: V
•
PERIPHERAL DIAMETER: 4.748 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 4.003 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 861 OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT1.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEV
PERIPHERAL DIAMETER4.748 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
SPECIAL FEATURESCHAMFER 0.062 IN. X 45 DEG IN
CENTER HOLE DIAMETER4.003 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 861 OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
424493-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 424493-2?
424493-2 is a ARM,BRAKE.
What parts can replace 424493-2?
There is 1 known substitute for 424493-2: 424493-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 424493-2?
424493-2 is cataloged in the U.S. Government catalog under NSN 5330-01-309-4620. 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.