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Technical Data Sheet
PartsTable / COMPONENT / 21C5781A
21C5781A ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The ROLLER AND SHAFT ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,PLAIN BOTH ENDS, base_style: MINIATURE SCREW, body_width: 0.715 INCHES MAXIMUM IN, bulb_style: TL (TUBULAR, LENS END), body_height: 0.650 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-774-3528, 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
21C5781A
NSN: 3120-00-774-3528
FSC: 3120
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,PLAIN BOTH ENDS
base_styleMINIATURE SCREW
body_width0.715 INCHES MAXIMUM IN
bulb_styleTL (TUBULAR, LENS END)
body_height0.650 INCHES MAXIMUM IN
body_length0.780 INCHES MAXIMUM IN
load_rating0.750 POUNDS MINIMUM AND 1.000 POUNDS MAXIMUM LBS
coil_quantity12-3/4
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeFULLY INCLOSED
overall_length0.938 INCHES MAXIMUM IN
NSN3120-00-774-3528
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 21C5781A · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
333-0005-243Interchangeable
interchangeable cross-reference
interchangeable
GE243Interchangeable
interchangeable cross-reference
interchangeable
87-0090Interchangeable
interchangeable cross-reference
interchangeable
1A4852-1Interchangeable
interchangeable cross-reference
interchangeable
S2-43Interchangeable
interchangeable cross-reference
interchangeable
13401Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21C5781A?
21C5781A is a ROLLER AND SHAFT ASSEMBLY.
What parts can replace 21C5781A?
There are 17 known substitutes for 21C5781A: 333-0005-243, GE243, 87-0090 and 14 more. Substitute compatibility should be verified for your specific system.
Is 21C5781A still available?
21C5781A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026