Jack Check Spring Standard 145519-001 Industry Standard Check Spring for Jack Sewing Machine. Part number 145519-001. Also known as Part number S02620-001 100399-001 This Check Spring is used widely though out the industry. Especially on Brother Drop Feed walking foot machines. Trojan Sewing Machines Supply Equivalent Plain Sewer & Needle Feed Lockstitch Machines. Model’s Jack fully Electronic A4 & A4-7H, Jack JK-9100BS-7, JK-609C and Jack JK-T1900BSK All with modern designs and the latest technology. All competitively priced.
