Value Collection JY4834321 Hand Tap 4-32 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4834321 is a straight-flute hand tap designed for cutting 4-32 unified national special (UNS) internal threads by hand. Built from high speed steel (HSS) with a bright, uncoated finish, this tap handles general-purpose threading in a wide range of materials. The plug chamfer — 3 to 5 threads of lead — makes it suitable as a starter tap in through-holes or as a follow-up to a taper tap in blind holes. With 3 flutes and an H2 thread limit, it holds tight tolerance suitable for 3B class-of-fit applications. Overall length is 1-7/8 inches. Machinists, toolroom technicians, and maintenance mechanics reach for this style of tap when hand-threading small-diameter fastener holes.

This tap is used in bench work, fixture building, and repair applications where a 4-32 UNS threaded hole is required. It is commonly used in light manufacturing, electronics enclosure fabrication, instrument repair, and general metal shop maintenance. The 3-flute straight-flute geometry works well in through-hole and moderately deep blind-hole threading where chip clearance is manageable. Right-hand thread direction matches standard 4-32 fasteners.

Key Features

• 4-32 UNS thread form, right-hand direction, for standard small-fastener applications
• Plug chamfer (3-5 thread lead) suits through-holes and follow-up blind-hole tapping
• High speed steel construction provides wear resistance across steel, aluminum, brass, and plastics
• H2 thread limit maintains close tolerance for 3B class-of-fit requirements
• Bright, uncoated finish — no coating buildup to affect thread tolerance in precision work
• 3-flute straight-flute design for controlled chip formation in hand-tapping operations

Compatibility

Designed as an OEM-style hand tap for cutting 4-32 UNS right-hand internal threads in standard tap wrench and holder setups used in general metalworking and maintenance applications.

Installation Notes

Install using a properly sized tap wrench to maintain axial alignment and avoid tap breakage. Apply cutting fluid appropriate to the workpiece material before and during tapping. Back off the tap periodically to break chips and prevent binding, particularly in deeper holes. Follow standard shop safety practices and secure the workpiece firmly before starting.