Value Collection JY4839999 Hand Tap 7/32-40 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4839999 is a 7/32-40 UNS straight flute hand tap designed for cutting internal threads in a wide range of materials. Built from high speed steel with a bright uncoated finish, this tap holds up under the friction and heat typical of hand tapping operations. The plug chamfer — ground with 3 to 5 leading threads — allows the tool to start easily in through-holes and blind holes with adequate clearance. The 4-flute straight flute design provides good chip control and is well-suited to use with a standard tap wrench in maintenance, repair, and fabrication settings.

This tap is used in metalworking and maintenance environments where 7/32-40 UNS threads are required. The UNS thread standard covers unified national special thread forms not found in standard UNC or UNF series, making this tap appropriate for applications with non-standard pitch requirements at this diameter. Machinists, toolmakers, and maintenance technicians working in industrial, commercial, and repair shop settings will find this tap useful for producing Class 3B fit threads — a close tolerance suitable for most precision fastener applications. It is sized for hand-driven operation using a T-handle or adjustable tap wrench.

Key Features

• 7/32-40 UNS thread form for non-standard pitch applications at this diameter
• High speed steel construction for durability during hand tapping operations
• Bright uncoated finish — ready to use as shipped, compatible with cutting fluid application
• Plug chamfer with 3 to 5 leading threads for reliable starting in through-holes and open blind holes
• 4-flute straight flute geometry promotes chip control and consistent thread form
• Class 3B fit and H2 thread limit for close-tolerance internal thread production

Compatibility

Designed as an OEM-style hand tap for use in standard tap wrenches sized for 7/32-inch shanks, suitable for through-hole and blind-hole tapping in metals and similar materials where 7/32-40 UNS internal threads are specified.

Installation Notes

This tap is intended for hand operation by a machinist or maintenance technician using a properly sized tap wrench. Always apply an appropriate cutting fluid for the workpiece material to reduce friction and extend tool life. Back the tap off periodically to break chips and prevent binding, especially in deeper holes. Keep the tap aligned perpendicular to the workpiece surface when starting to avoid cross-threading or tap breakage.