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A7391 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

A7391: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, body_width: 1.250 INCHES NOMINAL IN, body_height: 1.500 INCHES NOMINAL IN, body_length: 1.250 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, inclosure_type: OPEN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-661-9151, 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
A7391
NSN: 3120-00-661-9151
NIINs: 006619151, 009507707
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_width1.250 INCHES NOMINAL IN
body_height1.500 INCHES NOMINAL IN
body_length1.250 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
inclosure_typeOPEN
overall_length1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
transformer_functionLINE
NSN3120-00-661-9151
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A7391 · 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: 0.7500 INCHES MINIMUM AND 0.7510 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: 0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.7500 INCHES MINIMUM AND 0.7510 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
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-11734 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
OVERALL LENGTH1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 1
8684341Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A7391?
A7391 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace A7391?
There is 1 known substitute for A7391: 8684341. Substitute compatibility should be verified for your specific system.
What is the NSN for A7391?
A7391 is cataloged in the U.S. Government catalog under NSN 3120-00-661-9151. This indicates validated use in U.S. government and defense supply chains.
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