£72.98

Drill America 5/16" Cobalt Heavy Duty Drill Bit (Pack of 12), D/ACO Series

D/ACO5/16P12

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£73 today · usual range £0–£0 · best ever £54

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Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 554 days • 554 data points (No recent data available)

Historical
Generating forecast...
£76.11 £51.39 £56.79 £62.18 £67.57 £72.96 £78.36 06 June 2024 22 October 2024 09 March 2025 25 July 2025 11 December 2025

Price Distribution

Price distribution over 554 days • 5 price ranges

Days at Price
Current Price
82 days 39 days 144 days 52 days 237 days · current 0 59 119 178 237 £54-58 £58-63 £63-67 £67-72 £72-76 Days at Price

Price Analysis

Most common range: £72-76 (237 days, 42.8%)

Price range: £54 - £76

Price levels: 5 price ranges over 554 days

Description

Drill America jobber length drill bit. Manufactured to National Aerospace standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds upto 30 percent greater than High-Speed Steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium.

Key Features

Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

Round shanks allow use with a wide variety of toolholding systems

When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging

Manufactured to National Aerospace standard 907

Product Specifications

Size
16 Inches
Format
DIY & Tools
Pack Size
12 items
Domain
Amazon UK
Release Date
11 April 2025
Listed Since
22 October 2013

Barcode

No barcode data available

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