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Dormer A321 21P Set 3 - 13mm
Dormer A321 21P Set 3 - 13mm

Dormer A321 21 Piece HSS Steam & Bronze Tempered 3mm-13mm By 0.5mm Drill Set

The Dormer A321 is a 21-piece HSS drill bit set covering 3mm to 13mm in 0.5mm increments, designed for professional and workshop drilling applications. Each drill bit features a three-flat shank that prevents slipping in the chuck, making them ideal for use in both hand-held power tools and pillar drill machines.

Manufactured from high-speed steel with a steam and bronze tempered surface finish, these jobber length drill bits deliver reliable performance across a wide range of materials including steel, stainless steel, aluminium, brass, and plastics. The 135° split point ensures clean, accurate hole starts and reliable penetration, whilst the optimised helix design provides efficient chip removal and a smooth finish.

Supplied in a practical plastic storage case, this set is particularly suited for general engineering workshops, metal fabrication, automotive maintenance, and construction applications. The flatted shank design make these drill bits especially effective in pillar drill machines where consistent accuracy is essential, whilst also providing excellent grip security when used in hand-held power tools.

Features and Benefits:

  • Three-flat shank design prevents drill bit slipping in the chuck
  • Steam and bronze tempered finish reduces friction and extends tool life
  • 135° split point for clean, accurate hole starts
  • Complete 21-piece set covering 3mm to 13mm in 0.5mm increments
  • Supplied in plastic storage cassette for organised workshop storage
  • Suitable for multi-material drilling including steel, aluminium, brass, and plastics
  • Jobber length provides ideal balance between strength and reach
  • Dormer A321 21P Set 3 - 13mm

Dormer A321 21P Set 3 - 13mm

  • By Dormer Tools
  • Stock Code: D421424
  • Now £90.00 (£75.00 ex. VAT)
  • Was: £112.50 (£93.75 ex. VAT)
  • Save: 20% (£18.75 / £22.50 inc. VAT)
Free Delivery In Stock
Quantity:
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Standard delivery days are Monday - Friday
Saturday delivery is a non-standard service and subject to an additional charge.

Dormer A321 21 Piece HSS Steam & Bronze Tempered 3mm-13mm By 0.5mm Drill Set

The Dormer A321 is a 21-piece HSS drill bit set covering 3mm to 13mm in 0.5mm increments, designed for professional and workshop drilling applications. Each drill bit features a three-flat shank that prevents slipping in the chuck, making them ideal for use in both hand-held power tools and pillar drill machines.

Manufactured from high-speed steel with a steam and bronze tempered surface finish, these jobber length drill bits deliver reliable performance across a wide range of materials including steel, stainless steel, aluminium, brass, and plastics. The 135° split point ensures clean, accurate hole starts and reliable penetration, whilst the optimised helix design provides efficient chip removal and a smooth finish.

Supplied in a practical plastic storage case, this set is particularly suited for general engineering workshops, metal fabrication, automotive maintenance, and construction applications. The flatted shank design make these drill bits especially effective in pillar drill machines where consistent accuracy is essential, whilst also providing excellent grip security when used in hand-held power tools.

Features and Benefits:

  • Three-flat shank design prevents drill bit slipping in the chuck
  • Steam and bronze tempered finish reduces friction and extends tool life
  • 135° split point for clean, accurate hole starts
  • Complete 21-piece set covering 3mm to 13mm in 0.5mm increments
  • Supplied in plastic storage cassette for organised workshop storage
  • Suitable for multi-material drilling including steel, aluminium, brass, and plastics
  • Jobber length provides ideal balance between strength and reach
Technical Specification
Material
High-Speed Steel (HSS)
Point Angle
135° split point
Shank Type
Three-flat shank
Surface Finish
Steam and bronze tempered
Drill Length
Jobber length
Set Range
3.0mm to 13.0mm
Increment
0.5mm
Number of Pieces
21
Storage
Plastic case
 

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Delivery Information

We will aim to despatch goods the next working day subject to availability of stock. Standard delivery days are Monday - Friday. Saturday delivery is a non-standard service and subject to an additional charge. If however the item is in stock in our warehouse on the day of ordering we may be able to despatch it for a Next Day Service upon request. We must stress that next day delivery cannot be guaranteed.

UK Mainland

Free Delivery - £0.00

Order Value over £60.00 ex VAT and under 25Kg
Delivery by DHL

Regular Service - £6.99 ex VAT

Order Value below £60.00 ex VAT and under 25Kg
Delivery by DHL

Saturday AM Delivery - £24.25 ex VAT

Goods to be ordered at least 3 working days prior

Parcels over 25Kg & Pallet Deliveries

Price to be advised before shipping

Scottish Highlands, Offshore UK Islands and Northern Ireland

Scottish Highlands, Offshore UK Islands and Northern Ireland are not subject to our normal carriage rates - price on request.

These postcodes - BT, KA27 - KA28, KW, HS, IM, IV, PA20 - PA49, PA60 - PA78, PH17 - PH44, PH49 - PH50, PO30 - PO41, TR21 - TR25 and ZE.

Overseas orders

For delivery addresses not in the United Kingdom, please email marstongreen.web@energas.co.uk for instructions before placing your order.

More information can be found here

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