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R21021 — COIL,RADIO FREQUENCY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

R21021: COIL,RADIO FREQUENCY.

The COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 932 OVERALL, body_width: 0.400 INCHES MAXIMUM IN, body_height: 0.450 INCHES NOMINAL IN, body_length: 1.625 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, rating_method: WINDING TURNS SINGLE COMPONENT SINGLE WINDING. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-287-7188, 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
R21021
NSN: 3120-00-287-7188
NIINs: 002877188, 010573255
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 932 OVERALL
body_width0.400 INCHES MAXIMUM IN
body_height0.450 INCHES NOMINAL IN
body_length1.625 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE WINDING
turn_quantity2400 SINGLE COMPONENT SINGLE WINDING
coil_form_typeSOLID SINGLE COMPONENT
inclosure_typeFULLY INCLOSED
overall_length0.8650 INCHES MINIMUM AND 0.8850 INCHES MAXIMUM IN
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
NSN3120-00-287-7188
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: R21021 · 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: 1.3755 INCHES MINIMUM AND 1.3760 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-701 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 1.2490 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 932 OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER1.3755 INCHES MINIMUM AND 1.3760 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-701 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.8650 INCHES MINIMUM AND 0.8850 INCHES MAXIMUM IN
BODY INSIDE DIAMETER1.2490 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 932 OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
GP3205AReference document
Same NSN cross-reference
Reference document — Secondary reference
7696579Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GR3205Reference document
Same NSN cross-reference
Reference document — Secondary reference
7696519Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
R2102Reference document
Same NSN cross-reference
Reference document — Secondary reference
GP3205Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R21021?
R21021 is a COIL,RADIO FREQUENCY.
What parts can replace R21021?
There are 6 known substitutes for R21021: GP3205A, 7696579, GR3205 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R21021?
R21021 is cataloged in the U.S. Government catalog under NSN 3120-00-287-7188. This indicates validated use in U.S. government and defense supply chains.
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