TWSBI Diamond 580 nib assembly

Genuine replacement nibs for the TWSBI Diamond 580 fountain pen. Fully compatible with the Diamond 530 and Diamond 540 models. Also fits the Diamond 580RB and Diamond 580AL models by changing the front section (this just slides off). A complete assembly of nib/feed/collar mounted in a transparent gripping section (sorry, other colours not yet available). The nib itself is manufactured by Jowo.

To replace the nib on your Diamond 580 fountain pen, empty and clean the pen then unscrew the front section from the barrel by gripping the metal collar (the transparent grip section will just rotate so don't grip this part). Replace with the new nib section and gently screw in until hand tight. Replace the original nib in the canister for safe keeping. Note that the small black plastic part that comes as part of the nib packaging can be used to plug a 530, 540 or 580 barrel if it is to be stored without a nib unit.

See our reference section for more details on TWSBI nibs.

Writing samples are 300 DPI and the paper is 8mm spacing

Shipping cost
UK postage is FREE over £35 but otherwise starts at £1.80 for small items (converters, refills etc) or £3.30 for ink, stationery etc.

Overseas shipping starts at only £4.00. The exact cost varies by price, weight and delivery country so to find out your final shipping cost just add the item to your shopping basket and select the delivery country. You don't have to enter any personal details - just an e-mail address but this isn't stored unless you create an account. We offer a choice of shipping services from Royal Mail and DHL.

VAT (at 20%) is automatically taken off for destinations outside the UK. Note that if you are ordering within the EU you will have to pay VAT when your parcel arrives.

Availability
If an item is in stock, the words "In stock" will be shown. If an item is out of stock, the approximate number of days before we get another delivery will be shown instead. You may still be able to order the item, but there will be a delay before we can dispatch your item(s). If the words "Please enquire" are shown, it's best to check with us first before ordering.

Nib choices for fountain pens
If we show the pen with the default nib selection shown in stock it means we have stock of that pen. If you select another nib size and the website doesn't say "in stock" we can usually supply that pen immediately as we keep extensive supplies of nibs from all our manufacturers.