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303690 — CIRCUIT BOARD

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

303690: CIRCUIT BOARD.

The CIRCUIT BOARD is a the manufacturer industrial component. Key specifications include FSC APPLICATION DATA: TELETYPE AND FACSIMILE EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-115-1283, 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
MRO→ MRO_GENERAL→ 303690
NSN: 3120-00-115-1283
NIINs: 001151283, 009745948, 011651593, 012843854
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
FSC APPLICATION DATATELETYPE AND FACSIMILE EQUIPMENT
NSN3120-00-115-1283
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 303690 · 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: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.9980 INCHES MINIMUM AND 0.9985 INCHES MAXIMUM IN
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STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J461,ALLOY 64 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.8128 INCHES MINIMUM AND 0.8133 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.9980 INCHES MINIMUM AND 0.9985 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J461,ALLOY 64 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.1750 INCHES MINIMUM AND 1.1810 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.8128 INCHES MINIMUM AND 0.8133 INCHES MAXIMUM IN
SPECIAL FEATURESID AND OD CONCENTRIC WITH IN 0.0005 IN. TOTAL INDICATOR READING IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY2 HOLE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 303690?
303690 is a CIRCUIT BOARD. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 303690?
303690 is cataloged in the U.S. Government catalog under NSN 3120-00-115-1283. 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.