PartsTable
Technical Data Sheet
Download PDF

3-40512-5 — LIGHT EMITTING DIODE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

3-40512-5: LIGHT EMITTING DIODE.

The LIGHT EMITTING DIODE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 955 OVERALL, corner_shape: SQUARE ALL CORNERS, flange_width: 0.0590 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN, overall_length: 0.2500 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, EXTERNAL FLANGE ONE END. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-841-9201, 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
3-40512-5
NSN: 3120-00-841-9201
NIINs: 008419201, 014278048
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 65910 — MAYDAY MANUFACTURING CO. (USA)
SPECIFICATIONS
materialCOPPER ALLOY 955 OVERALL
corner_shapeSQUARE ALL CORNERS
flange_width0.0590 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN
overall_length0.2500 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, EXTERNAL FLANGE ONE END
surface_treatmentCADMIUM OUTSIDE DIAMETER SURFACE OF BODY
body_inside_diameter0.3730 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
body_outside_diameter0.5009 INCHES MINIMUM AND 0.5015 INCHES MAXIMUM IN
flange_outside_diameter0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-841-9201
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3-40512-5 · 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: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
FLANGE OUTSIDE DIAMETER: 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH32.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
CORNER SHAPESQUARE ALL CORNERS
FLANGE OUTSIDE DIAMETER0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.5009 INCHES MINIMUM AND 0.5015 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
SUBSTITUTES & CROSS-REFERENCES 1
107-104Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 3-40512-5?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 3-40512-5?
3-40512-5 is a LIGHT EMITTING DIODE.
What parts can replace 3-40512-5?
There is 1 known substitute for 3-40512-5: 107-104. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-40512-5?
3-40512-5 is cataloged in the U.S. Government catalog under NSN 3120-00-841-9201. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 3-40512-5

✓ 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.