Sewing Machine Thumb Screw Part 51347 Knurled Slotted Metal Replacement Part Replacement thumb screw for sewing machines, identified by part number 51347. This durable metal component features a knurled head for easy manual adjustment and a slotted top for use with a screwdriver when extra torque is needed. The tapered collar design ensures a secure fit for vintage or modern compatible sewing machine models. Perfect for repairs or as a spare part to keep your machine in top working order. Measurements: • Length: 0.75" Please look carefully at the pictures to determine if the physical condition meets your expectations before purchasing. I will not respond to any offers given through direct messages. I will only accept payment through the official payment method. I will only ship to the address the buyer has on file.