Value Collection JY4847083 Straight Flute Tap 3/4-12 Uns

Product Description

The VALUE COLLECTION JY4847083 is a straight flute bottoming tap designed to cut internal threads in pre-drilled holes where full thread depth close to the bottom of a blind hole is required. Manufactured from high-speed steel with a bright uncoated finish, this tap produces a 3/4-12 UNS right-hand thread to a 3B class of fit with an H3 thread limit. The 4-flute straight flute geometry provides stable cutting action in a range of ferrous and non-ferrous materials. At 4.25 inches overall length, it fits standard tap wrenches and machine holders used in production and maintenance environments.

This tap is suited for machine shops, maintenance and repair operations, and production threading applications where a 3/4-12 UNS thread form is required. The bottoming chamfer — typically 1 to 2 threads of lead — allows threading to within a few pitches of the bottom of a blind hole, making it the correct choice when full thread engagement depth is critical. It is commonly used as the final tap in a tapping sequence following a taper or plug tap, or as a standalone tool in through-hole applications where maximum thread depth is needed.

Key Features

• 3/4-12 UNS thread form, right-hand direction, 3B class of fit
• H3 thread limit for controlled fit and tolerance consistency
• Bottoming chamfer for threading close to the bottom of blind holes
• 4 straight flutes for stable cutting in a variety of materials
• High-speed steel construction for durability across general-purpose threading tasks
• Bright uncoated finish — no coating buildup to affect thread tolerance

Compatibility

Designed for use in any application requiring a 3/4-12 UNS internal thread. Compatible with standard tap wrenches, T-handle tap wrenches, and machine tap holders sized for the tap shank. Intended for use in manual or low-speed machine tapping setups.

Installation Notes

Secure the workpiece firmly before tapping and ensure the pilot hole diameter matches the recommended tap drill size for a 3/4-12 UNS thread. Apply a suitable cutting fluid appropriate for the workpiece material to reduce friction and extend tap life. When using a bottoming tap in a blind hole, back the tap out periodically to clear chips and prevent tap breakage. Do not exceed the tap's rated torque range — use a calibrated tap holder or torque-limiting driver when machine tapping to avoid tool failure.