Hertel K008074AS Hand Tap 4-36 Uns Taper 3-flute Hss

Product Description

The HERTEL K008074AS is a 4-36 UNS straight-flute hand tap designed for cutting internal threads in a right-hand direction. Made from high speed steel with a bright uncoated finish, it delivers consistent thread cutting in a wide range of ferrous and non-ferrous materials. The taper chamfer eases entry and distributes cutting forces across the leading threads, reducing the risk of tap breakage during starting. With an overall length of 1.875 inches and a thread length of 0.5625 inches, this compact tap is suited for shallow-hole and through-hole threading applications. The H2 thread limit provides a controlled tolerance class appropriate for standard UNS thread fits.

This tap is intended for use in hand tapping operations where a 4-36 UNS thread form is required. The 3-flute straight-flute geometry performs well in through-hole applications and in materials that produce broken chips. Typical installation contexts include precision metalworking, instrument repair, toolroom work, and maintenance applications where fine-thread fastener holes must be cut or restored by hand. A taper chamfer style is the standard starting tap in a tap set sequence and is appropriate when full thread engagement is not needed at the very bottom of a hole.

Key Features

• 4-36 UNS thread form with taper chamfer for controlled thread entry
• High speed steel construction for durability across common shop materials
• Bright uncoated finish suitable for use with standard cutting fluids
• H2 thread limit for consistent tolerance control on standard UNS fits
• 3-flute straight-flute design promotes chip clearance in through-hole applications
• Compact 1.875-inch overall length fits standard tap handles and T-handle wrenches

Compatibility

Designed as a standard replacement or service hand tap for any application requiring a 4-36 UNS right-hand internal thread. Fits standard tap handles sized for a 0.110-inch square drive.

Installation Notes

Hand taps are installed by machinists and toolroom technicians using a T-handle or adjustable tap wrench. Secure the workpiece before tapping and apply appropriate cutting fluid for the material being tapped. Back off the tap periodically to break chips and prevent binding. Never force a tap against resistance, as high speed steel taps are brittle and susceptible to breakage under torsional overload.