Value Collection JY4743209 Hand Tap 7/16-20 Unf

Product Description

The VALUE COLLECTION JY4743209 is a 7/16-20 UNF straight-flute hand tap designed for cutting right-hand internal threads in metalworking and maintenance applications. Built from bright, uncoated high speed steel, this tap features a plug chamfer with four flutes that help evacuate chips during through-hole and blind-hole threading. It carries an H11 thread limit, meaning the tap is ground to produce threads at the high end of the tolerance range, accommodating plated or coated fasteners. Overall length is 3-5/32 inches, and the tap is ground 0.005 inches oversize to allow for material springback and coating allowance in finished threads.

This hand tap is suited for job shop, MRO, and field repair work where a 7/16-20 UNF thread form is required. The plug chamfer style makes it a versatile choice as a starter or only tap for through-holes and moderately deep blind holes. Machinists, tool and die technicians, and maintenance mechanics typically reach for this tap when chasing or cutting 7/16-20 threads in steel, aluminum, and similar machinable materials. It is used in a standard tap wrench or T-handle driver.

Key Features

• 7/16-20 UNF thread form with right-hand thread direction
• H11 thread limit for threads that accept plated or coated fasteners
• 0.005 inches oversize grind compensates for material springback
• Plug chamfer for versatile use in through-holes and moderate blind holes
• Four-flute straight-flute geometry aids chip clearance during cutting
• Bright, uncoated high speed steel construction with no coating buildup

Compatibility

Designed as an OEM-style replacement or standard tooling solution for any application requiring a 7/16-20 UNF right-hand internal thread, compatible with standard tap wrenches and holders accepting straight-shank hand taps.

Installation Notes

This tap is intended for use by machinists or maintenance mechanics working on metalworking equipment or machinery repair. Always secure the workpiece before tapping and use an appropriate cutting fluid to extend tool life and improve thread finish. Apply steady, even pressure and back off periodically to break and clear chips, especially in deeper holes. Inspect the tap for chipping or wear before each use to avoid thread damage in the workpiece.