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3-3896 — SWITCH,THERMOSTATIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

3-3896: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include diameter: 1.6150 INCHES NOMINAL IN, material: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, hardness_rating: 40.0 ROCKWELL C NOMINAL OVERALL, flange_thickness: 0.0680 INCHES NOMINAL IN, outside_diameter: 2.0625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-448-6731, 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
MRO→ MRO_GENERAL→ 3-3896
NSN: 3120-00-448-6731
NIINs: 004486731, 012512180, 015836642
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
diameter1.6150 INCHES NOMINAL IN
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
hardness_rating40.0 ROCKWELL C NOMINAL OVERALL
flange_thickness0.0680 INCHES NOMINAL IN
outside_diameter2.0625 INCHES NOMINAL IN
style_designatorROUND
overall_thickness0.3906 INCHES NOMINAL IN
shank_outside_diameter1.7510 INCHES MINIMUM AND 1.7520 INCHES MAXIMUM IN
center_hole_shape_styleROUND
cross-sectional_shape_styleSHOULDERED
material_document_and_classificationAMS 4820 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-448-6731
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3-3896 · 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
•
FLANGE THICKNESS: 0.0680 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.3906 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 ROCKWELL C NOMINAL OVERALL
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4820 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 1.6150 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SHOULDERED
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
FLANGE THICKNESS0.0680 INCHES NOMINAL IN
OVERALL THICKNESS0.3906 INCHES NOMINAL IN
HARDNESS RATING40.0 ROCKWELL C NOMINAL OVERALL
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4820 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER1.6150 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESHOULDERED
OUTSIDE DIAMETER2.0625 INCHES NOMINAL IN
SHANK OUTSIDE DIAMETER1.7510 INCHES MINIMUM AND 1.7520 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-3896?
3-3896 is a SWITCH,THERMOSTATIC. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 3-3896?
3-3896 is cataloged in the U.S. Government catalog under NSN 3120-00-448-6731. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.