Name: A976 3.80x175mm HSS-E Straight Shank Parabolic Flute Extra Length Drill
Brand: Dormer
SKU: DOR0259319F
Price: 31.39 EUR
Availability: OutOfStock

Long Series Drills

Also referred to as twist or jobber drills, long series drill bits have long been a staple of a well-stocked toolkit. Available as single bits or as a long series drill set, they are often made from high-speed steel or high-speed cobalt and are coated for prolonged product life.

However, their length can work against them somewhat, with the tasks in which they're used expounding the problem of breakages. Long series drill bits aren't as rigid as their shorter counterparts, and if not held straight they can wander and break. In these cases, a centre punch can help to keep you on track, and to prevent drilling too deeply, a depth stop is an ideal accessory to keep those hole depths accurate.

Cromwell is proud to stock a wide choice of long series drill bits from reliable brands like Guhring®, Dormer® and our own brand, Sherwood®.

## When are long drill bits used?
Long series drill bits are used specifically for adding depth to a hole or drilling in a space that's difficult to reach. Used by builders and electricians to cut through walls and ceilings to thread cables, long drill bits have their set place in a trade toolkit.

## Long drill bit types
Long series drill bits are differentiated according to the material they're made from. The two most commonly found are HSS (high-speed steel) and HSCO (high-speed cobalt).

There are, however, a wide choice of finishes or surface treatments available, (outlined below) which offer various benefits according to the job type. All types of long series drill bits must conform to BS 328-1:1993 standard.

**• Blue oxide**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;Protects against corrosion

**• Black oxide**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;Adds a thickness to steel and protects against corrosion and friction

**• Titanium Nitride**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;(TiN) resists wear and reduces friction for a prolonged tool life

**• Titanium Aluminium Nitride**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;(TiAN) high hardness finish for cutting harder materials and alloys

**• Titanium Carbon Nitride**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;(TiCN) is suitable for cutting harder materials and high and low alloys

**• Bright**&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;&nbsp;Uncoated and ideal for drilling wood, PVC and soft metals

## Considerations when choosing a long drill bit
• **Material** - it's important that you use the right tool for the right job. Choose your drill bit according to the material you'll be drilling into to ensure the best results.

• **Length**- Choose the length of your drill bit or set it according to the depth of the holes you'll be needing.

• **Precision** - Some drill bits give cleaner results than others. Decide on the finish you want before committing to a product.

## Long drill bit jargon buster
There are lots of technical terms used when describing a jobber drill. We want to make it easy for you to find just what you're looking for, so we've put together a list of definitions of the most common terms.

**• Parabolic** - a flute shape that enables efficient chip removal to allow greater drilling depths in one pass

**• Morse taper** - is a bit mounting shape that allows for secure mounting onto the spindle of a driver

**• Threaded shank** - this type of drill bit works in conjunction with a threaded adapter on a handheld drill

**• Weldon shank** - a drill bit with flat edges on the shank to ensure a secure hold

**• Ball nose** - mainly used for die sinking, this type of drill bit features a rounded tip

**• Slot drills** - where the tip of a drill bit appears flat, with two cutting edges on either side

**• Spur** - the centralised tip of the drill bit

### FAQs
*Can I protect my HSS long series drill bit from breaking?*

To a point, yes, regular maintenance helps to prolong the life of any tool. Keep long drill bits clean, store them properly and try using cutting oil on metal surfaces to smooth the way.

Elevate your drilling capabilities with long series drills from Cromwell UK. Find the perfect cutting tool for deep-hole drilling, delivering exceptional accuracy and productivity in your projects.

Long Drill Bits | Cromwell UK

Cutting Tools

Drilling

Dormer

A976 Parabolic flute unique point and special web drill suitable for use on a range of  materials, including Stainless Steel, Carbon/Alloy Steels, Cast Iron & non-ferrous materials.

Features 
• HSS-E
• Straight shank PFX extra length
• Bright finish
• 15XD
• 130° point angle
• Manufactured to DIN1869/1
• Sizes 1.50mm to 14.00mm  


Series A976 HSS-E Straight Shank Parabolic Flute Extra Length Drill - Metric 

A976 3.80x175mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.00x125mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.10x125mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.20x135mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.30x135mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.40x140mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976, Extra Length, Long Series Drill, 2.5mm, Straight Shank, Cobalt High Speed Steel, Bright

A976 2.60x140mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.70x150mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.80x150mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

A976 2.90x150mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

Brand	Dormer
Coolant Delivery	External
Cutting Direction	Right Hand
Drill Diameter Tolerance	h8
EAN	7320760279823
ECLASS Code	21010101
Finish/Coating	Bright
Flute Construction	Ground Flute
Flute Length	120mm
Flute Type	Parabolic
Helix Type	High Helix
Material	Cobalt High Speed Steel
MFR Part No.	A9763.8X175
Number of Flutes	2
Overall Length	175mm
Point Angle	130°
Series	A976
Standards Met	DIN 1869/1
UNSPSC Code	23241637

Dormer

A976 3.80x175mm HSS-E Straight Shank Parabolic Flute Extra Length Drill

OUT OF STOCK

Product Information

Overview

Product Specification

Brand

Coolant Delivery

Cutting Direction

Drill Diameter Tolerance

EAN

ECLASS Code

Finish/Coating

Flute Construction

Flute Length

Flute Type

Helix Type

Material

MFR Part No.

Number of Flutes

Overall Length

Point Angle

Series

Standards Met

UNSPSC Code

Product Documents

Key Information

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