Drill bit set DeWalt DT4944-QZ, Ø unspecified, length 133 mm, for metal, pack of 5

DeWalt DT4944-QZ drill bit set for metal contains five high-speed steel bits, each with a length of 133 mm. Designed for portable or stationary drilling of high-alloy steels and other metals with tensile strength up to 1100 N/mm², this pack is intended for use with compatible hand drills and drill presses. The set features a no-walk tip for easier penetration on a range of surfaces and a three-sided, spin-proof shank for secure clamping in the drill chuck. Diameters are not specified in the supplied product data.

Advantages

The bits are manufactured from HSS with a cobalt alloy for improved life and heat resistance when drilling hard metals. The no-walk tip reduces the need for center punching and improves drill centring, resulting in cleaner, more accurate and burr-free holes thanks to recessed cutting wings. The three-sided shank prevents slipping in the chuck, offering stable torque transfer during both hand-held and press operations.

Suitable for

• Drilling high-alloy steels and metals with tensile strength up to 1100 N/mm²
• Use with hand-held electric drills for on-site fastening and maintenance
• Use with drill presses for fabrication and workshop holemaking
• Applications requiring reduced walking and burr-free holes, such as fitting and assembly

Key specifications

• Length: 133 mm per bit
• Material: High Speed Steel alloyed with cobalt (approx. 5% cobalt as provided)
• Tip type: no-walk (self-centering) tip with recessed cutting wings for cleaner holes
• Shank: three-sided, spin-proof shank for improved grip in the chuck
• Pack quantity: 5 pieces
• Intended material strength: suitable for metals up to 1100 N/mm² tensile strength

How to use

Install a bit into a compatible drill chuck and ensure the three-sided shank seats firmly to prevent slipping. Select an appropriate cutting speed and apply steady pressure; when drilling high-strength metals use cutting fluid or coolant to reduce heat and prolong tool life. The no-walk tip allows easier penetration—position the tip on the marked point and start drilling at low speed until the tip locates, then increase to the recommended speed for the material. Withdraw periodically to clear chips when drilling deep holes.

Usage recommendations

Use appropriate personal protective equipment (eye protection, gloves) and clamp workpieces securely. For best results on hard or high-alloy steels, use cutting fluid, moderate feed, and controlled speed. Replace bits once wear or chipping affects hole quality.