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A8121 — COIL,RADIO FREQUENCY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

A8121: COIL,RADIO FREQUENCY.

The COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, body_length: 0.563 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, overall_width: 0.350 INCHES NOMINAL IN, rating_method: WINDING TURNS SINGLE COMPONENT SINGLE WINDING, turn_quantity: 5 SINGLE COMPONENT SINGLE WINDING. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-097-8979, 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
A8121
NSN: 3120-00-097-8979
NIINs: 000978979, 004027670, 016170998
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70417 — CHRYSLER CORP AMPLEX DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_length0.563 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
overall_width0.350 INCHES NOMINAL IN
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE WINDING
turn_quantity5 SINGLE COMPONENT SINGLE WINDING
coil_form_typeHOLLOW SINGLE COMPONENT
inclosure_typeOPEN
overall_height0.344 INCHES NOMINAL IN
overall_length0.9950 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
mounting_methodTERMINAL SINGLE GROUP
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
NSN3120-00-097-8979
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A8121 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.8140 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.6875 INCHES MINIMUM AND 0.6885 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE OR A COMPOSITION
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.8140 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.9950 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.6875 INCHES MINIMUM AND 0.6885 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE OR A COMPOSITION
MATERIALCOPPER ALLOY OVERALL
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 4
SL685-16Reference document
Same NSN cross-reference
Reference document — Secondary reference
MILB5687Reference document
Same NSN cross-reference
Reference document — Identification reference
3120PL1076475Reference document
Same NSN cross-reference
Reference document — Informative reference only
AA812-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 A8121?
A8121 is a COIL,RADIO FREQUENCY.
What parts can replace A8121?
There are 4 known substitutes for A8121: SL685-16, MILB5687, 3120PL1076475 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A8121?
A8121 is cataloged in the U.S. Government catalog under NSN 3120-00-097-8979. This indicates validated use in U.S. government and defense supply chains.
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