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Technical Data Sheet
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ST4M166 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

ST4M166: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.419 INCHES NOMINAL IN, special_features: 0.416 LENGTH; MATERIAL 17-4PH CORROSION RESISTANT STEEL PER AMS5643 CONDITION H-1025, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-006-4028, 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
ST4M166
NSN: 3120-01-006-4028
NIINs: 010064028, 014552888
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.419 INCHES NOMINAL IN
special_features0.416 LENGTH; MATERIAL 17-4PH CORROSION RESISTANT STEEL PER AMS5643 CONDITION H-1025
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentPASSIVATE OVERALL
body_inside_diameter0.563 INCHES NOMINAL IN
body_outside_diameter0.749 INCHES NOMINAL IN
end_item_identificationAIRCRAFT,EAGLE F-15
part_name_assigned_by_controlling_agencyBUSHING, CLAMP-UP
NSN3120-01-006-4028
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: ST4M166 · 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: 0.4360 INCHES MINIMUM AND 0.4365 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 2 HOLE
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.4360 INCHES MINIMUM AND 0.4365 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.1610 INCHES MINIMUM AND 1.1660 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
ANTIROTATION/LUBRICATION TYPE AND QUANTITY2 HOLE
MATERIALSTEEL COMP 630 OVERALL
HOLE DIAMETER0.0780 INCHES MINIMUM AND 0.0830 INCHES MAXIMUM FIRST IN
SUBSTITUTES & CROSS-REFERENCES 1
ST4M166-5-1025Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST4M166?
ST4M166 is a BUSHING,SLEEVE.
What parts can replace ST4M166?
There is 1 known substitute for ST4M166: ST4M166-5-1025. Substitute compatibility should be verified for your specific system.
What is the NSN for ST4M166?
ST4M166 is cataloged in the U.S. Government catalog under NSN 3120-01-006-4028. This indicates validated use in U.S. government and defense supply chains.
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