NEEDLE CLAMP #445790 Household Sewing Machine Spare Parts For SINGER 974 | eBay
552R NEEDLE CLAMP THUMB SCREW 15K | College Sewing Machine Parts Ltd
FQTANJU "Needle Clamp Set Screw" and "Thumb/Foot Screw" (4 Screws/Set) for Juki Single Needle Industrial Sewing Machines : Amazon.co.uk: Home & Kitchen