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538378 — PISTON,ACTUATOR,LIM

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

538378: PISTON,ACTUATOR,LIM.

The PISTON,ACTUATOR,LIM is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.2510 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-662-4861, 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
538378
NSN: 3120-00-662-4861
NIINs: 006624861, 007940876
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.2510 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentCADMIUM OVERALL
body_inside_diameter0.1880 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN
body_outside_diameter0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
NSN3120-00-662-4861
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 538378 · 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
•
SURFACE FINISH: 250.0 MICROINCHES LEFT END SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TECHNICAL CHARACTERISTICS
SURFACE FINISH250.0 MICROINCHES LEFT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH250.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH250.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.2510 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.1880 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 538378?
538378 is a PISTON,ACTUATOR,LIM.
What is the NSN for 538378?
538378 is cataloged in the U.S. Government catalog under NSN 3120-00-662-4861. 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.