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PartsTable / COMPONENT / A121
A121 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include shape: STRAIGHT, length: 2.000 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, material: TUNGSTEN CARBIDE, hole_type: DRILLED, head_style: HEXAGON. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5660-00-224-8663, 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
A121
NSN: 5660-00-224-8663
FSC: 5660
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
shapeSTRAIGHT
length2.000 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
materialTUNGSTEN CARBIDE
hole_typeDRILLED
head_styleHEXAGON
body_length1.125 INCHES NOMINAL IN
head_height0.250 INCHES NOMINAL IN
thread_class2A A
hole_diameter0.081 INCHES NOMINAL IN
hole_quantity1
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
NSN5660-00-224-8663
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COIL,RADIO FREQUENCY TITLE COMPONENT PN A121 MFR COIL,RADIO FREQUENCY
KEY FEATURES
•
SINGLE WIRE CROSS-SECTIONAL SHAPE: ROUND
•
SURFACE TREATMENT: ZINC
•
BARB POINT QUANTITY: 4
•
BARB CROSS-SECTIONAL WIDTH: 0.080 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CONTENT WITHIN EACH UNIT PACKAGE: 80 RODS
•
FEATURES PROVIDED: TWO-STRAND WIRE
•
CENTER TO CENTER DISTANCE BETWEEN BARBS: 5.000 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SINGLE WIRE CROSS-SECTIONAL SHAPEROUND
SURFACE TREATMENTZINC
BARB POINT QUANTITY4
BARB CROSS-SECTIONAL WIDTH0.080 INCHES NOMINAL IN
MATERIALSTEEL
CONTENT WITHIN EACH UNIT PACKAGE80 RODS
FEATURES PROVIDEDTWO-STRAND WIRE
CENTER TO CENTER DISTANCE BETWEEN BARBS5.000 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
BARB CROSS-SECTIONAL SHAPEROUND
WIRE CROSS-SECTIONAL WIDTH0.099 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
RR-F-221Interchangeable
interchangeable cross-reference
interchangeable
A-A-1001Interchangeable
interchangeable cross-reference
interchangeable
RR-F-221/3Interchangeable
interchangeable cross-reference
interchangeable
A-12-1Interchangeable
interchangeable cross-reference
interchangeable
3009Interchangeable
interchangeable cross-reference
interchangeable
278-2129-030Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A121?
A121 is a COIL,RADIO FREQUENCY.
What parts can replace A121?
There are 12 known substitutes for A121: RR-F-221, A-A-1001, RR-F-221/3 and 9 more. Substitute compatibility should be verified for your specific system.
Is A121 still available?
A121 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: July 2026