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Technical Data Sheet
4956 ✓ Verified by PartsTable
Zyxel · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SHAFT,OUTPUT is a Zyxel industrial component. Key specifications include material: NICKEL ALLOY OVERALL, overall_width: 0.500 INCHES NOMINAL IN, overall_length: 0.800 INCHES NOMINAL IN, special_features: 20DB MIN. ISOLATION; 0.5DB MAX.; 1.25:1 MAX.

VSWR DB, peripheral_diameter: 1.375 INCHES NOMINAL IN, center_hole_diameter: 1.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-218-2693, 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
MRO MRO_GENERAL 4956
NSN: 5330-00-218-2693
FSC: 5330
CAGE: 54641 — LEAR SIEGLER INC SHERWOOD DIV (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
overall_width0.500 INCHES NOMINAL IN
overall_length0.800 INCHES NOMINAL IN
special_features20DB MIN. ISOLATION; 0.5DB MAX.; 1.25:1 MAX. VSWR DB
peripheral_diameter1.375 INCHES NOMINAL IN
center_hole_diameter1.000 INCHES NOMINAL IN
cross-sectional_height0.187 INCHES NOMINAL IN
frequency_range_rating+11000.0 TO 14000.0 MEGAHERTZ
end_item_identification8MCVD-RD-LU REDUCTION GEARBOX
cross-sectional_shape_styleSQUARE/RECTANGULAR
NSN5330-00-218-2693
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4956 MFR: Zyxel ⚠ 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
PERIPHERAL DIAMETER: 1.375 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT: 0.187 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
CENTER HOLE DIAMETER: 1.000 INCHES NOMINAL IN
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER1.375 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.187 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CENTER HOLE DIAMETER1.000 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
4956Interchangeable
interchangeable cross-reference
interchangeable
4950Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4956?
4956 is a SHAFT,OUTPUT manufactured by Zyxel. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4956?
There are 2 known substitutes for 4956: 4956, 4950. Substitute compatibility should be verified for your specific system.
What is the NSN for 4956?
4956 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-218-2693. This indicates validated use in U.S. government and defense supply chains.
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