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TW401C1 — BEARING,WASHER,THRUST

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

TW401C1: BEARING,WASHER,THRUST.

The BEARING,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN, material: IRON OVERALL, corner_shape: SQUARE ALL CORNERS, outside_diameter: 4.2470 INCHES MINIMUM AND 4.2490 INCHES MAXIMUM IN, style_designator: ROUND, overall_thickness: 0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-293-9989, 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
TW401C1
NSN: 3120-00-293-9989
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 07524 — DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER (USA)
SPECIFICATIONS
diameter3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN
materialIRON OVERALL
corner_shapeSQUARE ALL CORNERS
outside_diameter4.2470 INCHES MINIMUM AND 4.2490 INCHES MAXIMUM IN
style_designatorROUND
overall_thickness0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
surface_conditionGROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN3120-00-293-9989
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: TW401C1 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
OVERALL THICKNESS: 0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND
•
DIAMETER: 3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN
•
SURFACE CONDITION: GROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 4.2470 INCHES MINIMUM AND 4.2490 INCHES MAXIMUM IN
•
MATERIAL: IRON OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
OVERALL THICKNESS0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
STYLE DESIGNATORROUND
DIAMETER3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN
SURFACE CONDITIONGROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER4.2470 INCHES MINIMUM AND 4.2490 INCHES MAXIMUM IN
MATERIALIRON OVERALL
CENTER HOLE SHAPE STYLEROUND
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES 10
D2-9420PC229Reference document
Same NSN cross-reference
Reference document — Secondary reference
E1874-46Reference document
Same NSN cross-reference
Reference document — Secondary reference
356951Reference document
Same NSN cross-reference
Reference document — Secondary reference
E1873PC46Reference document
Same NSN cross-reference
Reference document — Secondary reference
D2-9420-229Reference document
Same NSN cross-reference
Reference document — Secondary reference
E2390PC46Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TW401C1?
TW401C1 is a BEARING,WASHER,THRUST.
What parts can replace TW401C1?
There are 10 known substitutes for TW401C1: D2-9420PC229, E1874-46, 356951 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TW401C1?
TW401C1 is cataloged in the U.S. Government catalog under NSN 3120-00-293-9989. 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.