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646 — DUMMY LOAD,ELECTRICAL

✓ Government record, cited
3M · TAPERED BEARING
PRODUCT OVERVIEW

646: DUMMY LOAD,ELECTRICAL.

Hectic life? Scratches to your tablet screen? You need a screen protector.

However, if you use your device on-the-go, you know how easy it is to read over another’s shoulder. That is why 3M, market leading providers of notebook privacy filters, has created the easiest way to protect your tablet screen from scratches and those prying eyes. Privacy on-the-go Protect your privacy by blocking the view of others.

Vivid image Clear finish maintains high image clarity. Touch compatible No compromise to touch screen functionality. Stay-clean edges Innovative technology prevents dust and grime from collecting on the edges of screen protector.

Easy to clean (microfibre cloth included for tablets) Fingerprints and smudges wipe away cleanly with a soft, lint-free cloth. Residue-free removal Unique adhesive technology means your screen protector goes on easily and removes cleanly. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-144-8882, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
646
NSN: 3110-00-144-8882
NIINs: 001448882, 001729079, 001949933, 002483325, 003318141, 003344500, 004029513, 004029515, 004030875, 004708304, 004708305, 004708306, 004708308, 004708309, 004737636, 004790133, 005671296, 006264816, 006467576, 007772000, 007936214, 008529759, 011470108, 011677109, 012541155, 014174550, 014739659, 015271183, 015450371, 016439245, 017079489
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 35377 — MAKINO INC (USA)
SPECIFICATIONS
angle60.0 DEGREES
shapeRECTANGULAR W/ROUNDED CORNERS
width2.000 INCHES NOMINAL IN
length72.000 INCHES IN
materialBRONZE ACTUATING ELEMENT
dial_size2 IN. DIA IN
food_typeSPONGE
thickness0.188 INCHES NOMINAL IN
bezel_typeSNAP-ON
body_width1.500 INCHES NOMINAL IN
bore_shapeSTRAIGHT
scale_namePRESSURE
NSN3110-00-144-8882
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 646 · 3M ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 32.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH10.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER32.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 3 CLASS AND 00 GRADE
LOAD DIRECTIONRADIAL
SUBSTITUTES & CROSS-REFERENCES 10
SKA1621Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA1-228Reference document
Same NSN cross-reference
Reference document — Secondary reference
228Reference document
Same NSN cross-reference
Reference document — Secondary reference
22-228Reference document
Same NSN cross-reference
Reference document — Secondary reference
221-183Reference document
Same NSN cross-reference
Reference document — Secondary reference
6013142Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 646?
646 is a DUMMY LOAD,ELECTRICAL manufactured by 3M.
What parts can replace 646?
There are 10 known substitutes for 646: SKA1621, AA1-228, 228 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 646?
646 is cataloged in the U.S. Government catalog under NSN 3110-00-144-8882. This indicates validated use in U.S. government and defense supply chains.
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