Value Collection JY9037631 M48x1.5 Straight Flute Tap 6H Hss

Product Description

The VALUE COLLECTION JY9037631 is a straight flute tap designed to cut M48x1.5 metric fine internal threads in ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright uncoated finish, this tap delivers reliable thread cutting in production and maintenance machining environments. The plug chamfer configuration provides a moderate lead-in, making it suitable for through-hole and most blind-hole applications where a starting chamfer is acceptable. With 6 flutes and a D6 thread limit, the tap produces a 6H class of fit — a standard tolerance suitable for general-purpose metric fastener assemblies. Overall length is 6-1/16 inches with a 3-inch thread length.

This tap is intended for machinists, toolmakers, and maintenance technicians working with large-diameter metric fine threads. The M48x1.5 pitch is common in precision mechanical assemblies, heavy equipment, and large-diameter fastener applications where fine thread engagement is required for load control or adjustability. Right-hand thread direction follows standard cutting conventions. Coolant-through capability is not included, so flood or brush-applied coolant is recommended for extended cuts in steel or stainless materials.

Key Features

• M48x1.5 metric fine thread form — large-diameter fine-pitch cutting in a single tool
• 6H class of fit with D6 thread limit for general-purpose metric tolerance compliance
• High-speed steel construction provides toughness and re-sharpenability
• Plug chamfer (3-5 thread lead) suits through-holes and accessible blind holes
• 6-flute design improves chip load distribution on large-diameter cuts
• Bright uncoated finish — compatible with standard cutting fluids and easy to inspect for wear

Compatibility

Designed as a straight flute tap for cutting M48x1.5 metric fine right-hand internal threads in standard tapping operations on drill presses, CNC machining centers, and manual lathes equipped for tapping.

Installation Notes

Installation of this tap should be performed by a qualified machinist. Ensure the workpiece is securely fixtured and the pre-drilled tap hole diameter is correct for M48x1.5 before beginning. Apply appropriate cutting fluid throughout the tapping operation to reduce heat and extend tool life. Do not exceed the tap's rated torque capacity — at this diameter, powered tapping with a torque-limiting chuck is strongly recommended to prevent breakage.