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Technical Data Sheet
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1239003 — Technical Data Sheet

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— · 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

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include frequency_rating: 1250.0 MEGAHERTZ NOMINAL FIRST FREQUENCY OPERATING, special_features: FSC APPLICATION DATA:ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT. This part is cataloged in the Federal Logistics Information System under NSN 3120-00-383-3836, 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
1239003
NSN: 3120-00-383-3836
FSC: 3120
CAGE: 66654 — TVH PARTS CO. (USA)
SPECIFICATIONS
frequency_rating1250.0 MEGAHERTZ NOMINAL FIRST FREQUENCY OPERATING
special_featuresFSC APPLICATION DATA:ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
NSN3120-00-383-3836
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1239003 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
14550InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7309BYGInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
245044InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
25216InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AA7G238InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
989023800DA106InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1239003?
1239003 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace 1239003?
There are 20 known substitutes for 1239003: 14550, 7309BYG, 245044 and 17 more. Substitute compatibility should be verified for your specific system.
Is 1239003 still available?
1239003 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026