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20646-300FB — FERRULE,GROOVED CLAMP COUPLING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

20646-300FB: FERRULE,GROOVED CLAMP COUPLING.

The FERRULE,GROOVED CLAMP COUPLING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, flange_length: 0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN, overall_length: 0.6300 INCHES NOMINAL IN, ferrule_inside_diameter: 0.5225 INCHES NOMINAL IN, flange_outside_diameter: 3.5050 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN, cross-sectional_shape_style: FLANGED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-397-3355, 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
20646-300FB
NSN: 5340-01-397-3355
FSC: 5340 — Hardware, Commercial
CAGE: 15284 — EATON CORPORATION DIV FED (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
flange_length0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN
overall_length0.6300 INCHES NOMINAL IN
ferrule_inside_diameter0.5225 INCHES NOMINAL IN
flange_outside_diameter3.5050 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN
cross-sectional_shape_styleFLANGED
NSN5340-01-397-3355
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20646-300FB 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 SHAPE STYLE: FLANGED
•
FLANGE LENGTH: 0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN
•
FERRULE INSIDE DIAMETER: 0.5225 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
FLANGE OUTSIDE DIAMETER: 3.5050 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.6300 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLANGED
FLANGE LENGTH0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN
FERRULE INSIDE DIAMETER0.5225 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
FLANGE OUTSIDE DIAMETER3.5050 INCHES MINIMUM AND 3.5150 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
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FREQUENTLY ASKED QUESTIONS
What is 20646-300FB?
20646-300FB is a FERRULE,GROOVED CLAMP COUPLING.
What is the NSN for 20646-300FB?
20646-300FB is cataloged in the U.S. Government catalog under NSN 5340-01-397-3355. 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.