Volkel Machine Taps DIN 376 HSS-E Spiral Flute - UNF

Genuine VÖLKEL machine taps to DIN 376, HSS-E, Form C with a 35° spiral flute for cutting internal UNF (Unified Fine) threads on CNC and manual milling/drilling machines. The spiral flute pulls chips up and out of the hole, making these ideal for blind holes. Stocked by San Tools in the UAE from 7/16" to 1".

Features

• DIN 376 Standard — machine tap geometry for use in tapping heads, collet chucks and rigid tapping setups
• HSS-E (Cobalt) Construction — improved heat resistance and edge life over standard HSS, suited to steel and stainless
• Form C, 35° Spiral Flute — pulls chips upward and out of the hole, ideal for blind-hole tapping
• UNF Thread Form — Unified Fine thread profile for precision imperial fasteners
• Size Range — 7/16" x 20 through 1" x 14 covers common medium-to-large imperial machine tapping work
• Machine Tap Shank — designed for power tapping on CNC mills, machining centres and tapping arms

How to Use

• Drill the Correct Tap Drill Size — use the correct pilot hole diameter for the UNF thread you're cutting
• Use a Tapping Head or Rigid Tapping Cycle — set feed to match the thread pitch exactly for rigid tapping
• Run at the Recommended Speed — reduce speed for blind holes and harder materials
• Flood or Mist Coolant — lubricate to extend tap life and improve thread finish
• Retract Fully on Blind Holes — allow the spiral flute to clear chips fully before backing out

Specifications

Type: Machine Tap (Form C, Spiral Flute)
Standard: DIN 376
Thread Form: UNF (Unified Fine)
Material: HSS-E (Cobalt High-Speed Steel)
Flute: 35° Spiral
Size Range: 7/16" x 20 – 1" x 14
Brand: VÖLKEL (Germany)
Origin: Imported, distributed by San Tools UAE
Note: Two SKUs (77738 / 77740) are both listed by the supplier as UNF 1" x 14 — kept as separate variants pending vendor clarification