Dormer Cobalt Steel, 75mm Overall, 4 mm Shank Drill Bit

RS Stock No.:: 794-7606
Mfr. Part No.:: A7774.0
Manufacturer:: Dormer

Dormer Cobalt Steel, 75mm Overall, 4 mm Shank Drill Bit

Subtotal (1 box of 10 units)*

TWD2,878.00

(exc. GST)

TWD3,021.90

(inc. GST)

FREE delivery for orders over NT$1,300.00

In Stock

Plus 39 unit(s) shipping from November 09, 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Box(es)	Per Box	Per unit*
1 +	TWD2,878.00	TWD287.80

*price indicative

RS Stock No.:: 794-7606
Mfr. Part No.:: A7774.0
Manufacturer:: Dormer

Specifications

Product overview and Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Dormer
	Product Type	Drill Bit
	Material	Cobalt Steel
	Number of Flutes	4
	Flute Type	Helical
	Overall Length	75mm
	Shank Type	Cylindrical
	Number of Pieces	10
	Finish	Bronze
	Drill Point Angle	135°
	Cutting Direction	Right
	Drilling Length	43mm
	Shank Size	4mm
	Standards/Approvals	DIN 338

	Select all
	Brand Dormer
	Product Type Drill Bit
	Material Cobalt Steel
	Number of Flutes 4
	Flute Type Helical
	Overall Length 75mm
	Shank Type Cylindrical
	Number of Pieces 10
	Finish Bronze
	Drill Point Angle 135°
	Cutting Direction Right
	Drilling Length 43mm
	Shank Size 4mm
	Standards/Approvals DIN 338

Catalogue - Holemaking

RoHS Status: Exempt

Dormer A777 Series Drill Bit, HSS-E, Twist - A7774.0

This high-quality Dormer drill bit with a 4mm diametre is an essential tool for professionals in automation, electronics, electrical, and mechanical industries. Made of durable HSS-E material, this precision drill bit from the A777 series ensures long-lasting performance and high cutting precision.

Features & Benefits

• Premium Dormer drill bit designed for metal cutting applications

• High-speed steel twist drill bit for superior performance

• 10-piece drill bit set for versatility in different projects

• 4mm diametre for precise drilling operations

Applications

• Ideal for use in automation, electronics, electrical, and mechanical industries

• Perfect for creating holes in metal surfaces with precision

• Suitable for DIY enthusiasts, professionals, and hobbyists alike

Can it be used for drilling holes in stainless steel?

Yes, this high-performance drill bit is perfect for drilling holes in stainless steel due to its HSS-E material.

Will it work well on aluminium surfaces?

Yes, this Dormer drill bit is designed to provide efficient drilling on aluminium surfaces with ease.

Is it suitable for use on wood materials?

While primarily designed for metal cutting, this drill bit can also be used on wood materials if necessary.