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138937-1 — MICROCIRCUIT,LINEAR

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

138937-1: MICROCIRCUIT,LINEAR.

The MICROCIRCUIT,LINEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_width: 0.252 INCHES NOMINAL IN, overall_height: 0.047 INCHES MAXIMUM IN, overall_length: 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, special_features: LEAD FREE. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-185-2275, 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
138937-1
NSN: 3120-01-185-2275
NIINs: 011852275, 017319993
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 75477 — FM AF, LLC DBA AMERICAN FAN COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_width0.252 INCHES NOMINAL IN
overall_height0.047 INCHES MAXIMUM IN
overall_length0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
special_featuresLEAD FREE
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES, INTERNAL FLANGE ONE END
features_providedELECTROSTATIC SENSITIVE
surface_treatmentCADMIUM OVERALL
inclosure_materialPLASTIC
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
body_inside_diameter3.1496 INCHES MINIMUM AND 3.1498 INCHES MAXIMUM IN
NSN3120-01-185-2275
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 138937-1 · 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
•
LEFT INTERNAL FLANGE WIDTH: 0.1250 INCHES NOMINAL IN
•
LEFT INTERNAL FLANGE HOLE DIAMETER: 2.8125 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BODY OUTSIDE DIAMETER: 3.4790 INCHES MINIMUM AND 3.4800 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES, INTERNAL FLANGE ONE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
LEFT INTERNAL FLANGE WIDTH0.1250 INCHES NOMINAL IN
LEFT INTERNAL FLANGE HOLE DIAMETER2.8125 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
BODY OUTSIDE DIAMETER3.4790 INCHES MINIMUM AND 3.4800 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES, INTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.5625 INCHES NOMINAL IN
BODY INSIDE DIAMETER3.1496 INCHES MINIMUM AND 3.1498 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
FF12989 PIECE 14Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 138937-1?
138937-1 is a MICROCIRCUIT,LINEAR.
What parts can replace 138937-1?
There is 1 known substitute for 138937-1: FF12989 PIECE 14. Substitute compatibility should be verified for your specific system.
What is the NSN for 138937-1?
138937-1 is cataloged in the U.S. Government catalog under NSN 3120-01-185-2275. This indicates validated use in U.S. government and defense supply chains.
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