Dormer HSS, 157 mm Overall 20 mm 1

View all Drill Bits

Subtotal (1 unit)*

£48.55

(exc. VAT)

£58.26

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 14 unit(s) shipping from 09 February 2026
  • Plus 7 unit(s) shipping from 09 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£48.55

*price indicative

Maintenance tools on a dark background.
Every Fix Made Easy. Every Day.
Keep your operations running smoothly with our curated selection of high‑performing tools, equipment and consumables—built for everyday maintenance tasks through to mission‑critical repairs. Whatever the job, our trusted range is ready to go when you are.
Shop the Maintenance Essentials
RS Stock No.:
299-7861
Mfr. Part No.:
A170-17,00
Brand:
Dormer
Find similar products by selecting one or more attributes.
Select all

Brand

Dormer

Product Type

Drill Bit

Material

HSS

Number of Flutes

1

Overall Length

157mm

Flute Type

Spiral

Shank Type

Cylindrical

Number of Pieces

1

Finish

Tin, Bronze, Steel, Titanium Aluminium Nitride, Bright, Bright Steel

Drill Bit Size

20 mm

Cutting Direction

Righ

Drilling Length

84mm

Shank Size

12.7 mm

Coolant Through

Yes

Standards/Approvals

No

RoHS Status: Exempt

COO (Country of Origin):
BR

Dormer Drill Bit, 84mm Flute Length, Steam-Tempered Surface Treatment - A170 Series - A17017.0


Work holes into hard materials with this drill bit from Dormer. It works together with a drilling machine and rotates rapidly to apply axial force on surfaces, creating channels for fastener installation. The part is built for tough settings, thanks to a high-speed steel body that can withstand impact and wear. It supports right-hand rotation, which reduces the risk of chip accumulation and heat build-up in the cutting area.

Features & Benefits


• Steam-tempered surface treatment fortifies it against corrosion, assuring you of long-lasting service

• Installation is simple and doesn't need complex tools, saving time and hassle

Applications


• Automotive manufacturing

• HVAC systems

• Construction sites

What's the cutting diameter of this drill bit?


This drill bit has a cutting diameter of 17mm, so it fits the bill for medium-sized fasteners.

Related links