There are always those pieces that you come across when sorting that you can’t figure out what they are. Most pieces have a number on it but the numbers are very small on most pieces. You can use the magnifier in the accessibility options on your iPhone. That is what I do. This page will feature some of the most asked about and hard to figure out pieces. I will keep adding to this when I come across more. Click on the item number and you will go to the catalog listing for the piece on Bricklink.
WATCH BEZEL ROUND: bb1008
This is one of the most asked pieces that you can come across while sorting. It is a bezel from a watch but it is listed in the Gear category.
CANISTER HANGER CLIP, BIONICLE BOHROK: x349
This isn’t really a piece. This is part of the container that the Bionicle Bohroks came in. It clipped onto the Bohrok so it could hang in the container.
BIONICLE KRANA HOLDER: 42042
This is also from the Bohrok but it is a piece from the Bohrok and not the container.
ELECTRIC MOTOR 9v MICROMOTOR PULLEY: 2983
The 9v Micromotor isn’t used anymore but you might find the pulley that attaches to the motor.
VEHICLE TIPPER END FLAT WITH PINS: 3145
This one was last in a set from 1980 so you might not run into one.
VEHICLE TIPPER END FLAT WITHOUT PINS: 30022
A piece that looks similar to the one above was still in use in 2016.
HINGE COUPLING NYLON: 650
This actually a hinge from the old Samsonite sets. Even though it is old, I run into this one often.
MINIFIGURE, BODY PART RACERS DRIVER: x351
This piece has changed categories on Bricklink. Being now a minifig part doesn’t make it easier to find.
TECHNIC ROTATION JOINT BALL LOOP: 47455
This is listed in the general Technic category. It can be hard to find since it has never been in a Technic set
MINIFIGURE WEAPON SPEAR TIP WITH FINS: 24482
This looks like a soft tip from a throwing dart. It is smaller than those but this one is a minifigure weapon
PART FROM ELECTRIC MOTOR: bb0007pb01
This is a piece that falls off an old 4.5V motor. If you click on the above link you can see the 2 metal tubes on the end. This goes underneath. This part isn’t listed on Bricklink since it isn’t supposed to come off.