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KFB3-440-20ET — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

KFB3-440-20ET: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN, diameter: 0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, material: COPPER ALLOY OVERALL, thread_length: 0.375 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN, surface_treatment: TIN OVERALL, cross-sectional_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-253-6778, 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
KFB3-440-20ET
NSN: 5340-01-253-6778
FSC: 5340 — Hardware, Commercial
CAGE: 46384 — PENN ENGINEERING & MANUFACTURING CORP (USA)
SPECIFICATIONS
length0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
diameter0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
materialCOPPER ALLOY OVERALL
thread_length0.375 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
surface_treatmentTIN OVERALL
cross-sectional_shapeROUND
surface_treatment_document_and_classificationMIL-T-10727, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5340-01-253-6778
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: KFB3-440-20ET 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
•
LENGTH: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-T-10727, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.375 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
DIAMETER: 0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE: ROUND
•
SURFACE TREATMENT: TIN OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
LENGTH0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-T-10727, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.375 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
DIAMETER0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPEROUND
SURFACE TREATMENTTIN OVERALL
MATERIALCOPPER ALLOY OVERALL
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
18099B-0440-14Reference 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 KFB3-440-20ET?
KFB3-440-20ET is a STANDOFF,THREADED,SPACING.
What parts can replace KFB3-440-20ET?
There is 1 known substitute for KFB3-440-20ET: 18099B-0440-14. Substitute compatibility should be verified for your specific system.
What is the NSN for KFB3-440-20ET?
KFB3-440-20ET is cataloged in the U.S. Government catalog under NSN 5340-01-253-6778. 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.