Value Collection JY4870325 Straight Flute Tap 1-1/4-32 Uns

Product Description

The VALUE COLLECTION JY4870325 is a straight flute tap designed to cut internal threads in a 1-1/4-32 UNS configuration. Built from high-speed steel (HSS) with a bright/uncoated finish, this tap is suited for threading operations in a range of metals and materials where a standard, uncoated tool meets the application. The plug chamfer style features a moderate lead-in of approximately 3 to 5 threads, making it appropriate for through-hole threading where the tap can extend beyond the workpiece. With 6 flutes and an H4 thread limit, it is capable of producing accurate 3B class of fit threads in production and maintenance machining environments. Overall length is 4 inches.

This tap is used in machining, fabrication, and maintenance repair operations requiring a 1-1/4-32 UNS thread form. The plug chamfer style is the most common general-purpose chamfer and is well suited for through-hole applications on manual mills, drill presses, and CNC tapping setups. The right-hand thread direction matches standard fastener conventions. Machinists, tool-and-die makers, and maintenance technicians working in industrial, commercial, or field settings will encounter this size in specialty thread applications outside standard UN or metric series.

Key Features

• 1-1/4-32 UNS thread form for specialty non-standard thread applications
• High-speed steel construction provides durability across a range of workpiece materials
• 6-flute design for improved thread finish and tool stability during the cut
• Plug chamfer with moderate lead-in suited for through-hole threading
• H4 thread limit produces consistent 3B class of fit internal threads
• Bright/uncoated finish — no coating buildup, ready for use with standard cutting fluids
• Coolant-through: No — standard external coolant or cutting oil application

Compatibility

Designed as a general-purpose straight flute tap for cutting 1-1/4-32 UNS internal right-hand threads in through-hole applications on compatible machining equipment.

Installation Notes

Tapping operations should be performed by a qualified machinist using the appropriate tap wrench, tapping head, or machine tapping attachment rated for the tap size. Always apply a suitable cutting fluid or tapping compound to extend tool life and improve thread quality. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the hole before starting the cut. Back the tap off periodically to break chips when tapping blind holes, even though this is a through-hole configuration.