Value Collection JY4840260 Hand Tap 1/4-27 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4840260 is a straight-flute hand tap designed for cutting 1/4-27 UNS internal threads in a range of materials. Manufactured from high speed steel with a bright, uncoated finish, this tap provides the hardness and edge retention needed for hand-tapping operations in shop and field environments. The plug chamfer style features a moderate lead-in, making it suitable for through-hole threading where a starting tap is not required. With 4 flutes and a right-hand thread direction, it produces clean, accurate threads in a 3B class of fit held to an H3 thread limit. Overall length is 2.5 inches.

This tap is suited for machinists, tool-and-die workers, and maintenance professionals performing hand-threading tasks on through holes in metals, plastics, and similar workpiece materials. The 1/4-27 UNS thread form is a unified national special designation, used where standard UNC or UNF pitch counts do not meet design requirements. The plug chamfer and straight-flute geometry work best in open, through-hole applications where chip clearance is not a concern.

Key Features

• 1/4-27 UNS thread form — unified national special designation for non-standard pitch applications
• Plug chamfer with 4 to 5 thread lead-in for through-hole threading
• High speed steel construction for hardness and wear resistance in hand-tapping operations
• Bright, uncoated finish — ready for use as supplied, no coating to chip or flake
• 4-flute straight-flute design produces consistent thread form and surface finish
• Class 3B fit held to H3 thread limit for close-tolerance internal thread applications

Compatibility

Designed as an OEM-style replacement or direct-use hand tap for any application requiring a 1/4-27 UNS right-hand internal thread in a 3B class of fit.

Installation Notes

Hand taps of this type are installed by machinists and maintenance technicians using a standard tap wrench or T-handle. Secure the workpiece before tapping and ensure the starting hole diameter is correct for a 1/4-27 UNS thread to achieve proper fit and avoid tap breakage. Apply cutting fluid appropriate to the workpiece material throughout the operation. Back the tap out periodically to break and clear chips, even in through-hole applications.