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#21 (.159) 1/4-28 Threaded Drill Bit HSS 1-1/4 Long

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#21 (.159) 1/4-28 Threaded Drill Bit HSS 1-1/4 Long

https://www.roctexo.com/web/image/product.template/93355/image_1920?unique=4821d38
Part numbers : RX1-12-03966 , #21HSSH , 12-03966
Unit of Measure: EA

4.39 EUR / EA 4.39 EUR 4.39 € excl. VAT

4.39 EUR / EA excl. VAT

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Availability
Up to 3 EA ready to ship on Monday 2026-09-28
Order before 17:00 CET on Friday 2026-09-25
6 EA available on request, fees apply
Special order from vendor stock.

High-speed-steel threaded drill bit for use with compatible 1/4-28 UNF threaded drilling adaptors. This #21 drill has a nominal diameter of 0.159 in (4.04 mm) and an overall length of approximately 32 mm.

  • Roctexo part number: RX1-12-03966
  • Manufacturer part number: #21HSSH
  • Drill size: #21, 0.159 in (4.04 mm)
  • Material: high-speed steel (HSS)
  • Thread: 1/4-28 UNF, Class 2A male thread
  • Construction: NAS 965 Type B
  • Surface treatment: steam oxide
  • Overall length: 1-1/4 in (approximately 32 mm)

Suitable for general to medium-duty drilling of low-tensile-strength materials where access is limited.

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