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SM-12 — SEMICONDUCTOR DEVICE,DIODE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

SM-12: SEMICONDUCTOR DEVICE,DIODE.

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: PLASTIC ENCLOSURE, shank_style: EXTERNALLY THREADED, thread_class: 3A A, bore_diameter: 0.7495 INCHES MINIMUM AND 0.7515 INCHES MAXIMUM IN, overall_width: 0.083 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN, overall_height: 0.034 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-331-9761, 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
SM-12
NSN: 3120-01-331-9761
NIINs: 013319761, 013489096, 013842985, 015190873
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 56644 — TIMKEN AURORA BEARING COMPANY (USA)
SPECIFICATIONS
materialPLASTIC ENCLOSURE
shank_styleEXTERNALLY THREADED
thread_class3A A
bore_diameter0.7495 INCHES MINIMUM AND 0.7515 INCHES MAXIMUM IN
overall_width0.083 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
overall_height0.034 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
overall_length0.110 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
drive_end_shapeSQUARE SINGLE END INTERNAL
mounting_methodTERMINAL
thread_diameter0.7500 INCHES NOMINAL IN
style_designatorBALL TYPE
thread_directionRIGHT-HAND
NSN3120-01-331-9761
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SM-12 · 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
•
SHANK THREAD LENGTH: 1.7190 INCHES MINIMUM AND 1.8120 INCHES MAXIMUM IN
•
BORE CENTER TO SHANK END DISTANCE: 2.8600 INCHES MINIMUM AND 2.8900 INCHES MAXIMUM IN
•
INNER MEMBER WIDTH: 0.8700 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
•
OUTER MEMBER WIDTH: 0.6820 INCHES MINIMUM AND 0.6920 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BALL TYPE
•
THREAD DIAMETER: 0.7500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SHANK THREAD LENGTH1.7190 INCHES MINIMUM AND 1.8120 INCHES MAXIMUM IN
BORE CENTER TO SHANK END DISTANCE2.8600 INCHES MINIMUM AND 2.8900 INCHES MAXIMUM IN
INNER MEMBER WIDTH0.8700 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.6820 INCHES MINIMUM AND 0.6920 INCHES MAXIMUM IN
STYLE DESIGNATORBALL TYPE
THREAD DIAMETER0.7500 INCHES NOMINAL IN
OVERALL LENGTH3.7500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SHANK STYLEEXTERNALLY THREADED
SURFACE TREATMENTCHROMATE INNER MEMBER
SUBSTITUTES & CROSS-REFERENCES 2
ARE-12SSReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
23038591-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SM-12?
SM-12 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace SM-12?
There are 2 known substitutes for SM-12: ARE-12SS, 23038591-1. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-12?
SM-12 is cataloged in the U.S. Government catalog under NSN 3120-01-331-9761. This indicates validated use in U.S. government and defense supply chains.
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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.