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Csk Head Machine Screws M4 x 40mm Pack of 25

Product Code: 86879

Rated 4.7 out of 5 by 3 reviewers.

BZP. Countersunk head. Prodrive®. Free of hexavalent chrome.

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From £1.72 (inc. 20% VAT)

4.6667 5 3

Bulk savings

No. of packs 1 - 9 10 - 14 15 +
Price per
£2.15 £1.94 £1.72

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Page 1 of 3
Rated 4 out of 5 by Nut Screws Washer & Bolts What can I say? It's shiny and countersunk, with a machine screw thread. It's 40mm long and the thread is 4mm wide. They fit an M4 threaded hole just perfectly. Even though it's called a machine screw, you can use it anywhere with a suitable and deep enough threaded hole. How's that for versatility? 25 Aug 2014
Rated 5 out of 5 by GETTING ELECTRICIANS OUT OF TR When the M3.5 or 4BA female thread strip in a mounting box, especially the old metal ones with the plastic inserts, I use a M4 tap. These M4 CSK screws with relatively small heads are ideal. Pity they are not available in 30mm lengths for shallower boxes. 25 Jan 2013
Rated 5 out of 5 great purchase more machine screws than other DIY shops at haft the price 23 Feb 2010
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Bolt Size M4
Head Type Csk
Manufacturing Standards DIN 965
Model No BZP-CH-04040-SF
Pack Size 25
Product Diameter 4 mm
Product Length 40 mm
Product Type Machine Screws