Harken 125mm Aluminum Footblock
Harken 125mm Aluminum Footblock is backordered and will ship as soon as it is back in stock.
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Payment
Payment
- Credit Cards: We accept major credit cards, including Visa, Mastercard, American Express, and Discover.
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- Shop Pay: For faster checkouts and secure payment processing.
Shipping
Shipping
Ground, 2nd Day Air and Next Day Air available ! Same Day Shipping if your order is placed by 4pm Eastern
Returns
Returns
At Harbor Supply, we aim to ensure you’re completely satisfied with your purchase. If you need to return an item, you have 90 days from the date of delivery to initiate a return.
Eligibility for Returns:
To be eligible for a return:
- The item must be in its original condition—unused, unworn, with all tags still attached, and in its original packaging.
- You’ll need the receipt or proof of purchase.
Please note, returns must be authorized before sending any items back. Items returned without prior authorization will not be accepted.
Description
Description
Product Description
The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same. Carrying some of the highest loads imposed by running rigging, these strong, lightweight blocks feature Torlon® roller bearings housed in a center cage. Rollers stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum sideplates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. Blocks are easily disassembled with a single hex wrench. Either metric or imperial flathead fasteners may be used for mounting and are not exposed.
| Sheave Ø (mm) | 125 mm |
| Sheave Ø (in) | 4 15/16 in |
| Length (mm) | 176 mm |
| Length (in) | 6 15/16 in |
| Weight (g) | 972 g |
| Weight (oz) | 34.29 oz |
| Maximum line Ø (mm) | 19 mm |
| Maximum line Ø (in) | 3/4 in |
| Fasteners (mm) | 12 FH mm |
| Fasteners (in) | 1/2 FH in |
| Maximum working load (kg) | 4990 kg |
| Maximum working load (lb) | 11000 lb |
| Breaking load (kg) | 9979 kg |
| Breaking load (lb) | 22000 lb |
| Height (mm) | 43 mm |
| Height (in) | 1 11/16 in |
| Number of fasteners | 4 |
| A (mm) | 17 mm |
| A (in) | 21/32 in |
| B (mm) | 45 mm |
| B (in) | 1 25/32 in |
| C (mm) | 113 mm |
| C (in) | 4 7/16 in |
| D (mm) | 34.5 mm |
| D (in) | 1 11/32 in |
| E (mm) | 127.5 mm |
| E (in) | 5 1/32 in |
| F (mm) | 176 mm |
| F (in) | 6 29/32 in |
| G (mm) | 28 mm |
| G (in) | 1 3/32 in |


