Value Collection JY4847075 Straight Flute Tap 3/4-12 Uns

Product Description

The VALUE COLLECTION JY4847075 is a straight flute tap designed to cut internal threads in a 3/4-12 UNS thread form. It features four flutes and a plug chamfer, making it suited for threading through-holes and moderately deep blind holes where chips can be managed manually. Manufactured from high-speed steel with a bright, uncoated finish, this tap delivers reliable cutting performance across a range of ferrous and non-ferrous workpiece materials. The H3 thread limit provides a controlled tolerance for a 3B class of fit, ensuring consistent thread quality in production and maintenance environments. Overall length is 4.25 inches with a right-hand thread direction.

This tap is used in machine shops, maintenance facilities, and manufacturing operations where 3/4-12 UNS threads are required. The plug chamfer style — typically 3 to 5 threads of chamfer lead — suits general-purpose tapping in power-feed and hand-tapping applications. It is appropriate for machinists, tool and die makers, and maintenance mechanics working with standard UNS thread specifications on steel, aluminum, and similar materials.

Key Features

• 3/4-12 UNS thread form with right-hand thread direction
• Plug chamfer for versatile through-hole and blind-hole tapping
• 4-flute geometry supports chip clearance and thread form accuracy
• H3 thread limit for 3B class of fit — controlled tolerance for standard thread assemblies
• High-speed steel construction for durability across common workpiece materials
• 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 with a 3B class of fit. Suitable for use with standard tap holders and tapping heads that accept the corresponding shank size for this tap geometry.

Installation Notes

This tap should be installed in a rigid tap holder or floating tap holder appropriate for the machine type — drill press, CNC machining center, or hand-tapping setup. Always apply cutting fluid appropriate to the workpiece material before and during tapping to reduce heat buildup and extend tap life. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the work surface before engaging. Do not force a tap that has seized — back off to clear chips before continuing.