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3949 — SWITCH,THERMOSTATIC

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

3949: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, body_length: 1.734 INCHES NOMINAL IN, bore_diameter: 0.290 INCHES NOMINAL IN, coil_quantity: 11, overall_width: 0.562 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-126-4173, 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
3949
NSN: 3120-00-126-4173
NIINs: 001264173, 002409162, 010225123, 011168810, 016086558
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
body_length1.734 INCHES NOMINAL IN
bore_diameter0.290 INCHES NOMINAL IN
coil_quantity11
overall_width0.562 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
overall_height0.656 INCHES NOMINAL IN
inside_diameter0.210 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
special_featuresBEARING,PLAIN,UNMOUNTED
style_designatorRECTANGULAR, OPEN FRAME
NSN3120-00-126-4173
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3949 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESBEARING,PLAIN,UNMOUNTED
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 3949?
3949 is a SWITCH,THERMOSTATIC.
What is the NSN for 3949?
3949 is cataloged in the U.S. Government catalog under NSN 3120-00-126-4173. This indicates validated use in U.S. government and defense supply chains.
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