Blackjax Japanned Woodscrews PZ Round Head Black Organic

Blackjax Japanned Woodscrews are twin-threaded black organic screws built specifically for use alongside black ironmongery — hinges, latches, handles and the like. The black japan finish gives a consistent, traditional appearance that sits well against period-style fittings, and the organic coating means the colour is part of the finish rather than a painted-on afterthought. These are the screws you reach for when the ironmongery on the door is black and a bright zinc screw would look completely out of place.

The Pozidriv recess makes for a clean, efficient drive with minimal cam-out, which matters when you are fitting a dozen cabinet hinges or hanging a run of internal doors and you want the heads to sit flush without any chewed-up marks. Twin threading gives good pull-through resistance in timber and MDF, and the screws bite quickly without you needing to pre-drill in most softwood situations.

Where Blackjax Japanned Woodscrews Are Used

These are a straightforward trade staple for joiners, carpenters and furniture makers working with traditional or heritage-style hardware. Cottage-style kitchens, barn conversions, period property refurbishments — anywhere the finished appearance of the fixings is as important as the fixing itself. They are also commonly used by shopfitters and cabinet makers specifying black hardware throughout, where mixing silver and black fixings would simply not pass a client walkthrough.

Part Threading on Longer Lengths

Worth noting: from 1¼ inch upwards these screws are partially threaded. That is standard practice for longer woodscrews, and it actually helps when pulling two pieces of timber together — the plain shank in the top piece lets the thread below do the drawing work properly. If you are only fixing into a single thickness, keep that in mind when selecting your length.

Sold in boxes of 200, these are priced for trade use and available across a good range of gauges and lengths to suit most common joinery applications.