Value Collection JY4842480 Hand Tap 3/8-48 Uns

Product Description

The VALUE COLLECTION JY4842480 is a straight-flute hand tap designed for cutting 3/8-48 UNS internal threads in a right-hand direction. Built from high speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread form across a range of ferrous and non-ferrous workpiece materials. The plug chamfer style features a gradual lead-in, making it the standard choice for through-holes and moderately deep blind holes where chip clearance is adequate. With a 4-flute configuration and an overall length of 2-15/16 inches, the JY4842480 is sized for use in bench or machine tapping operations where hand-tap tolerances are required.

This tap is suited for machinists, toolroom technicians, and maintenance professionals cutting 3/8-48 UNS threads in production or repair applications. The 3B class of fit and H3 thread limit specify a standard tolerance range used widely in general mechanical assembly where moderate clearance between mating parts is acceptable. It is appropriate for use in steel, aluminum, brass, and similar materials when paired with appropriate cutting fluid. Typical use cases include threading fastener holes in fabricated parts, repair tapping of stripped threads, and prototype or low-volume production work.

Key Features

• 3/8-48 UNS thread form for fine-pitch unified special threading applications
• Plug chamfer provides gradual thread engagement, suitable for through-holes and open blind holes
• High speed steel construction offers durability across common workpiece materials
• Bright, uncoated finish allows direct visual inspection of tool wear during use
• 4-flute straight-flute geometry delivers stable chip formation in hand-tapping operations
• H3 thread limit and 3B class of fit meet standard tolerance requirements for general mechanical assembly

Compatibility

Designed as a standard hand tap for cutting 3/8-48 UNS right-hand internal threads. Compatible with standard tap wrenches and tapping fixtures sized for 3/8-inch shank hand taps.

Installation Notes

This tap is installed by licensed machinists or qualified maintenance technicians using a tap wrench or tapping fixture. Secure the workpiece fully before beginning the tapping operation and apply a suitable cutting fluid throughout to reduce heat and extend tool life. Never force the tap against resistance; back off a quarter turn periodically to break and clear chips, particularly in blind-hole applications. Replace the tap if thread form shows visible wear or if torque increases unexpectedly during use.