Value Collection LS-21 Differential Screw 10-32 3/32 Hex

Product Description

The VALUE COLLECTION LS-21 is a differential screw designed for use with indexable cutting tool assemblies. Differential screws use opposing thread directions on each end to create precise clamping force when tightened, securing indexable inserts firmly against the tool body. The LS-21 features a 10-32 thread size and a 3/32 inch hex socket drive. Overall length is 0.87 inches, with a right-hand thread length of 0.50 inches and a left-hand thread length of 0.25 inches. This type of fastener is a standard consumable component in CNC and manual machining operations.

The LS-21 differential screw is used in machine shops and production environments where indexable toolholders require periodic insert changes. The clamp-compatible hardware design makes it suitable for standard indexable turning, milling, and boring tooling assemblies that rely on differential-thread clamping systems. Machinists and toolroom technicians replace these screws during routine maintenance or when thread wear reduces consistent clamping performance. Industry standard number LS-21 allows for straightforward cross-referencing with tooling catalogs.

Key Features

• Differential thread design generates precise clamping force on indexable inserts
• 10-32 thread size compatible with standard indexable clamp hardware
• 3/32 inch hex socket drive for use with standard hex keys
• Right-hand thread length of 0.50 inches and left-hand thread length of 0.25 inches
• Overall length of 0.87 inches for compact toolholder fitment
• Industry standard number LS-21 for easy catalog cross-reference

Compatibility

Designed as a standard LS-21 differential screw replacement for indexable toolholders using 10-32 thread clamp hardware with a 3/32 inch hex socket drive.

Installation Notes

Installation is typically performed by a machinist or toolroom technician during insert indexing or toolholder maintenance. Disengage machine power and ensure the spindle is fully stopped before servicing any toolholder hardware. Use a properly sized 3/32 inch hex key to seat and tighten the screw without over-torquing, which can cause thread damage in the toolholder body. Inspect the screw threads for wear or galling whenever indexable inserts are changed.