Harken 16mm Air Block (404)
The 16 mm Harken Air Block is Harken’s® smallest block. It is perfect for small control lines found on high-tech boats. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load. The 404 uses an O-ring to keep the line in the sheave during intermittent loading.
- Sheave Ø (mm) - 16 mm
- Length (mm) - 29 mm
- Weight (g) - 10 g
- Maximum line Ø (mm) - 5 mm
- Maximum working load (kg) - 113 kg
- Breaking load (kg) - 544 kg
Delivery and Costs
We try to treat delivery as a pass through cost and keep the cost to you as low as possible, on top of our already competitive product prices.
We offer free UK standard delivery for orders over £50, this does exclude boats, trolleys, masts, booms and large items which can't be sent via standard mail.
Any order placed by midday will leave us the same working day unless there is a lead time which we detail on the product page.
UK 2nd Class Small Packet - £3.99
UK 1st Class Small Packet - £4.50
UK 1st Class Small Packet - Over 1KG - £5.99
DHL Next Day Courier - £8.99
Courier - Long Items - Masts, Booms Etc - £40
Close to England - £10
We do not have other shipping destinations set up currently due to customs charges and the cost of shipping, this will be reviewed soon. If you would like to order an item and can't see your location simply drop us an email to firstname.lastname@example.org with the items you are planning on ordering and your address.