Dormer Cobalt Steel, 151 mm Overall 5

RS Stock No.:: 794-7650
Mfr. Part No.:: A77712.0
Brand:: Dormer

Subtotal (1 box of 5 units)*

£214.92

(exc. VAT)

£257.90

(inc. VAT)

FREE delivery for orders over £50.00

Temporarily out of stock

2 unit(s) shipping from 24 March 2026

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

Box(es)	Per Box	Per unit*
1 +	£214.92	£42.984

*price indicative

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RS Stock No.:: 794-7650
Mfr. Part No.:: A77712.0
Brand:: Dormer

Specifications

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	151mm
	Number of Pieces	5
	Shank Type	Cylindrical/Straight
	Finish	Bronze
	Drill Point Angle	135°
	Shank Size	12 mm
	Cutting Direction	Right
	Drilling Length	101mm
	Standards/Approvals	DIN 338

	Select all
	Brand Dormer
	Product Type Drill Bit
	Material Cobalt Steel
	Number of Flutes 4
	Flute Type Helical
	Overall Length 151mm
	Number of Pieces 5
	Shank Type Cylindrical/Straight
	Finish Bronze
	Drill Point Angle 135°
	Shank Size 12 mm
	Cutting Direction Right
	Drilling Length 101mm
	Standards/Approvals DIN 338

RoHS Status: Exempt

COO (Country of Origin):: FR

Dormer Drill Bit, Tempered Bronze Finish, 100.2g Weight - A777 Series - A77712.0

Bore into superalloy workpieces with ease thanks to this drill bit from Dormer. It pairs with your drilling machine and rotates swiftly into hard surfaces to create helical holes for screw and bolt installation. Its overall length of 151mm allows you to reach deep into your material. The unit's HSS-E construction makes it tough as nails, so it's fit for heavy-duty tasks. A bronze finish improves its resistance to corrosion, meaning you can count on it for long-lasting service.

Features & Benefits

• Right-hand rotation for use with standard drills

• Compact diameter of 12mm for precision drilling

• Light weight of 100.2g for comfortable handling during operation

Applications

• Construction sites

• Carpentry workshops

• Machine building

What's the split point angle of this drill bit?

This unit has a 135° split point angle, which provides enhanced centering when boring. It also reduces the tendency of the bit to wander when starting a hole, giving you a precise cut.