Value Collection MSC-04475190 Straight Flute Tap 9/16-18 Unf

Product Description

The VALUE COLLECTION MSC-04475190 is a straight flute bottoming tap designed for cutting right-hand internal threads in a 9/16-18 UNF configuration. Manufactured from high-speed steel with a bright, uncoated finish, this tap is built for threading operations that require reaching the bottom of blind holes. With 4 flutes and an H3 thread limit tolerance, it delivers consistent thread form in ferrous and non-ferrous materials. The overall length is 3.625 inches, with a thread length of 1.656 inches. This tap suits production and repair threading tasks in machine shops, maintenance facilities, and field service environments.

The MSC-04475190 is suited for applications requiring clean, fully formed threads close to the bottom of a blind hole. The bottoming chamfer style leaves minimal unthreaded length at the hole base, making it a common choice for fastener repair, fixture fabrication, and component assembly work. It is typically used in manual tap handles or machine tapping operations where a UNF fine-thread pitch is required at the 9/16-inch nominal diameter.

Key Features

• Bottoming chamfer for threading to the base of blind holes
• 9/16-18 UNF right-hand thread form
• H3 thread limit for consistent fit with standard UNF fasteners
• 4-flute straight design for chip clearance in through and blind holes
• High-speed steel construction for durability across a range of workpiece materials
• Bright, uncoated finish with no additional surface treatment

Compatibility

Designed as a standard replacement or production tap for 9/16-18 UNF right-hand threaded holes in applications requiring a bottoming chamfer and H3 thread tolerance class.

Installation Notes

This tap is installed by machinists or maintenance technicians using a compatible tap handle or machine tapping setup. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for 9/16-18 UNF before use. Apply appropriate cutting fluid to extend tool life and improve thread quality. Do not force the tap if resistance is encountered, as high-speed steel tools are susceptible to breakage under excessive torque.