Value Collection L0B104626 Thread Roll 1/2-20 Unf Axial

Product Description

The VALUE COLLECTION L0B104626 is an axial thread roll designed for cold-form threading operations on 1/2-20 UNF fasteners and threaded components. This roll features a 5 TRRB head style with 5 starts, making it suited for high-efficiency thread rolling where multiple lead starts reduce cycle time and improve thread form consistency. Cold-form thread rolling work-hardens the material surface rather than cutting it, producing stronger threads with better surface finish than tapped alternatives. It weighs 0.5 pounds and is sold individually.

This thread roll is used in production threading applications across metalworking, fastener manufacturing, and precision machining environments. The axial orientation suits through-feed and in-feed threading setups on CNC lathes, thread rolling machines, and similar equipment. The 1/2-20 UNF specification targets fine-pitch unified thread work common in automotive, aerospace, and general mechanical assembly applications where close tolerances and thread strength are required.

Key Features

• 1/2-20 UNF thread size for fine-pitch unified thread forming
• Axial roll type for through-feed and in-feed threading setups
• 5 TRRB head style for compatibility with standard axial roll heads
• 5-start design for reduced cycle time and improved threading efficiency
• Cold-form process work-hardens thread flanks, increasing thread strength

Compatibility

Designed as an OEM-style replacement or production replacement thread roll for axial thread rolling heads accepting 5 TRRB style rolls configured for 1/2-20 UNF threading.

Installation Notes

Thread rolls are installed and serviced by machining professionals familiar with thread rolling equipment setup and tooling changes. Before changing rolls, power down and lock out the machine per OSHA lockout/tagout procedures. Rolls must be installed in matched sets at equal spacing to maintain proper thread form and avoid uneven wear. Consult the thread rolling head manufacturer's documentation for correct roll positioning, preload, and feed rate settings specific to the work material and thread size.