Amazon.com: Rubatone Metal Guitar Knobs Flat Top Control with Black Knurled Barrels 6mm Split Shafts Volumn Tone Screw Type for Tele Strat Style Electric or Bass Pack of 4pcs. (NS 004-BK) :
Amazon.com: Traxxas 4859 Hex-Drive Flat Head Screws, 3x10mm (set of 4) : Toys & Games
RATTMMOTOR RM/SFU1605 BallScrew Kit, 300mm Length Ball Screw with SFU1605 Ball Screw Nut+BK/BF12 Ball Screw End Supports+1605 Ball Screw Nut Housing for CNC Machine: Amazon.com: Industrial & Scientific