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C251M1250 — FILTER ELEMENT,FLUID

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

C251M1250: FILTER ELEMENT,FLUID.

The FILTER ELEMENT,FLUID is a the manufacturer industrial component. Key specifications include material: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN, body_outside_diameter: 0.4390 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-542-1155, 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
C251M1250
NSN: 3120-00-542-1155
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70651 — ATLAS BRASS FOUNDRY INC (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE ALL CORNERS
overall_length1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
body_outside_diameter0.4390 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-542-1155
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: C251M1250 · 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
•
BODY OUTSIDE DIAMETER: 0.4390 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.4390 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 1
124859Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C251M1250?
C251M1250 is a FILTER ELEMENT,FLUID.
What parts can replace C251M1250?
There is 1 known substitute for C251M1250: 124859. Substitute compatibility should be verified for your specific system.
What is the NSN for C251M1250?
C251M1250 is cataloged in the U.S. Government catalog under NSN 3120-00-542-1155. 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.