Value Collection JY4849147 Straight Flute Tap 1-16 Uns

Product Description

The VALUE COLLECTION JY4849147 is a straight flute tap designed to cut internal threads in through-holes and open-ended blind holes. Built from high-speed steel with a bright/uncoated finish, this tap handles 1-16 UNS threading with a plug chamfer that provides a gradual lead-in of approximately 3 to 5 threads. With 4 flutes and an H4 thread limit, it is suited for producing 3B class of fit threads in a range of workpiece materials. At 5.125 inches overall length, it fits standard tap wrenches and machine holders used in production and maintenance environments. Machinists, toolmakers, and maintenance technicians are the primary users of this tap.

This tap is applied in situations where a 1-16 UNS internal thread is required in metalworking, industrial fabrication, or equipment repair. The 1-16 UNS designation is an Unified National Special thread, used when standard coarse or fine pitch threads do not meet the design requirement. The plug chamfer makes this tap appropriate for starting in a pre-drilled hole and cutting to depth in through-hole applications. The right-hand thread direction matches the standard cutting orientation for most tapping operations by hand or machine.

Key Features

• 1-16 UNS thread form for specialized unified national special threading requirements
• Plug chamfer provides a 3 to 5 thread lead-in for smooth starting in pre-drilled holes
• 4-flute design channels chips and supports accurate thread form during cutting
• H4 thread limit maintains 3B class of fit tolerances for standard internal thread assemblies
• High-speed steel construction provides durability across a broad range of workpiece materials
• Bright/uncoated finish allows direct inspection of tool condition and wear

Compatibility

Designed as an OEM-style replacement or standard tooling option for any application requiring a 1-16 UNS, 3B class of fit internal thread in through-hole or open blind-hole configurations.

Installation Notes

This tap is installed and used by machinists and maintenance technicians in manual or machine tapping operations. Always secure the workpiece and ensure the pilot hole diameter matches the recommended tap drill size for 1-16 UNS before starting. Apply appropriate cutting fluid to extend tool life and improve thread quality. Reverse the tap periodically during hand tapping to break chips and prevent tap breakage.