PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 387511PC57
387511PC57 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.3438 INCHES MINIMUM AND 0.3594 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, body_outside_diameter: 0.6870 INCHES MINIMUM AND 0.6880 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-469-1291, 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
387511PC57
NSN: 3120-00-469-1291
FSC: 3120
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.3438 INCHES MINIMUM AND 0.3594 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
body_outside_diameter0.6870 INCHES MINIMUM AND 0.6880 INCHES MAXIMUM IN
NSN3120-00-469-1291
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 387511PC57 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL: COPPER ALLOY OVERALL
•
BODY OUTSIDE DIAMETER: 0.6870 INCHES MINIMUM AND 0.6880 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY INSIDE DIAMETER: 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALCOPPER ALLOY OVERALL
BODY OUTSIDE DIAMETER0.6870 INCHES MINIMUM AND 0.6880 INCHES MAXIMUM IN
OVERALL LENGTH0.3438 INCHES MINIMUM AND 0.3594 INCHES MAXIMUM IN
CORNER SHAPESQUARE ALL CORNERS
BODY INSIDE DIAMETER0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
B54SC2Interchangeable
interchangeable cross-reference
interchangeable
B54-2Interchangeable
interchangeable cross-reference
interchangeable
BW54-2Interchangeable
interchangeable cross-reference
interchangeable
4638Interchangeable
interchangeable cross-reference
interchangeable
502-5019Interchangeable
interchangeable cross-reference
interchangeable
836553Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 387511PC57?
387511PC57 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 387511PC57?
There are 17 known substitutes for 387511PC57: B54SC2, B54-2, BW54-2 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 387511PC57?
387511PC57 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-469-1291. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026