D 513 – Lock Nut

D 513 – Lock Nut for Bag Closer Machines

The D 513 Lock Nut is a durable and precisely manufactured spare part designed to securely fasten for block pin feed dog carrier component in bag closer sewing machines. Made from high-strength steel, it ensures a tight grip, prevents loosening under vibration, and maintains proper alignment of machine parts during continuous heavy-duty operations.

This lock nut plays a vital role in the stability and reliability of the machine’s moving assemblies. It is suitable for widely used Bag Closer Machine models including Newlong, Fischbein, DA Model, and GK-26-1A.

Key Features:

• Manufactured from premium-grade steel for strength and durability

• Prevents loosening caused by vibration and heavy usage

• Ensures secure fitting and reliable machine performance

• Easy to install and replace

• Compatible with Newlong, Fischbein, DA Model, and GK-26-1A Bag Closer Machines

D 513 for Block Pin