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Technical Data Sheet
PartsTable / COMPONENT / AA304-2
AA304-2 ✓ 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

The RESISTOR NETWORK,FIXED,FILM is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 1.301 INCHES NOMINAL IN, opening_diameter: 2.093 INCHES MINIMUM IN, style_designator: EXTERNAL-INTERNAL, surface_treatment: CHROMIUM AND NICKEL AND OXIDE OVERALL, wrenching_surface_size: 3.562 INCHES NOMINAL SINGLE END 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 3120-00-146-5630, 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
AA304-2
NSN: 3120-00-146-5630
FSC: 3120
CAGE: 02077 — MILLER-HOLZWARTH INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length1.301 INCHES NOMINAL IN
opening_diameter2.093 INCHES MINIMUM IN
style_designatorEXTERNAL-INTERNAL
surface_treatmentCHROMIUM AND NICKEL AND OXIDE OVERALL
wrenching_surface_size3.562 INCHES NOMINAL SINGLE END IN
wrenching_surface_shapeHEXAGON SINGLE END INTERNAL
drive_end_outside_diameter1.710 INCHES NOMINAL IN
nondefinitive_spec/std_data148 COMPONENT
wrenching_end_outside_diameter2.244 INCHES NOMINAL IN
NSN3120-00-146-5630
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: AA304-2 · 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
•
BODY OUTSIDE DIAMETER: 0.3770 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.5000 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.3770 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
GGG-W-646Interchangeable
interchangeable cross-reference
interchangeable
A-A-3042Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-646 TY2CL1STAFMBPT146Interchangeable
interchangeable cross-reference
interchangeable
A-A-3042 COMPONENT 148Interchangeable
interchangeable cross-reference
interchangeable
A-A-3042 #147Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-646 TY2CL1STAFMBPT145Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA304-2?
AA304-2 is a RESISTOR NETWORK,FIXED,FILM.
What parts can replace AA304-2?
There are 14 known substitutes for AA304-2: GGG-W-646, A-A-3042, GGG-W-646 TY2CL1STAFMBPT146 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA304-2?
AA304-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-146-5630. 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