Value Collection JY9037029 Straight Flute Tap M39x3

Product Description

The VALUE COLLECTION JY9037029 is a straight flute tap designed to cut M39x3 metric fine internal threads in through-holes and blind holes requiring a bottoming chamfer. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable performance in ferrous and non-ferrous materials where metric fine threading is specified. The bottoming chamfer style allows thread cutting to run nearly to the bottom of a blind hole, making it a practical choice when thread engagement length is critical. With an overall length of 6.0625 inches and a thread length of 3.1875 inches, the JY9037029 is sized for use in industrial machine shops, maintenance facilities, and production tooling applications.

This tap is suited for applications requiring M39x3 metric fine threads, commonly encountered in heavy machinery, hydraulic components, and precision mechanical assemblies. The right-hand, four-flute straight flute design works well with CNC tapping machines, rigid tapping attachments, and manual tap wrenches. It is appropriate for use in medium to large diameter thread production where chip control and thread accuracy are priorities. The D6 thread limit designation supports standard fit classes for metric fine threads.

Key Features

• M39x3 metric fine thread form for precise thread engagement in large-diameter workpieces
• Bottoming chamfer allows thread cutting close to the bottom of blind holes
• High-speed steel (HSS) construction provides toughness and wear resistance across a wide range of materials
• Four-flute straight flute design supports consistent chip evacuation and thread quality
• Right-hand thread direction, compatible with standard tapping equipment and toolholders
• D6 thread limit for standard metric fine fit class requirements
• Bright, uncoated finish suitable for use with cutting fluids and standard tapping compounds

Compatibility

Designed as an OEM-style replacement or standard production tap for applications requiring M39x3 metric fine right-hand internal threads. Verify thread limit and chamfer requirements against your specific workpiece and fit class specifications before installation.

Installation Notes

This tap should be installed and operated by machinists or tool and die professionals familiar with tapping procedures for large-diameter metric threads. Power down all equipment and secure the workpiece before tool changes. Use an appropriate cutting fluid or tapping compound for the workpiece material to extend tap life and improve thread quality. Do not exceed the recommended feed rate for the thread pitch, and back off periodically to break chips when tapping deep blind holes.