Schaefer Double, Upset Shackle
Availability: Please call to check availability. Not available for expedited shipping. Usually Ships Within 20 Days
Shipping and Delivery
Enjoy free shipping on qualifying orders of $145 or more delivered within the 48 contiguous United States. Alaska, Hawaii, Puerto Rico, and other U.S. territories are excluded.
Delivery for qualifying free-shipping orders takes 8 to 10 business days.
Free shipping does not apply to:
- Orders containing only clearance items
- Customized special orders made to your detailed requirements
- Sails and boats
- Long tracks, spinnaker poles, whisker poles, and large tubes
- Oversized or heavy items, including items that require less-than-truckload (LTL) freight shipping
Standard Shipping
- UPS and FedEx Ground: Delivery usually takes 2 to 5 business days for in-stock orders.
- USPS: Allow an additional 3 business days beyond the standard shipping time.
- Saturday delivery: UPS and FedEx deliver on Saturdays only for overnight shipments sent on Friday. Additional charges may apply.
Oversized Items and Freight Shipping
Oversized items, such as whisker poles, spinnaker poles, and tracks longer than 8 feet, require freight shipping. The estimated shipping cost is $500, depending on the destination.
For freight deliveries, provide a commercial address, such as the marina, yacht club, or boatyard where your sailboat is located. The recipient must sign for the shipment upon delivery.
International Orders
International customers are responsible for all applicable import duties, fees, and taxes.
Schaefer Double, Upset Shackle
2 Series Blocks are perfect for vangs, outhauls, backstays, cunninghams and other control blocks on a wide variety of boats. .
Schaefer's 8 Series Stainless Blocks add strength and brilliance to your deck. Featuring Delrin sheaves, forged stainless steel D shackles, bolted construction for strength and Stainless Steel cheeks polished to a high luster add beauty and confidence to your boat.
| Features | American | Metric |
|---|---|---|
| Description | Double Block with Upset Shackle | |
| Length | 3 9 /32 in | 83 mm |
| Width | 1 3/16 in | 30 mm |
| Overall Thickness | 1 1/8 in | 28 mm |
| Sheave | 1 1/16 in | 27 mm |
| Sheave Width | 3/8 in | 9 mm |
| Maximum Line | 5/16 in | 8 mm |
| Pin | 3/16 in | 5 mm |
| Safe Working Load Stainless | 900 lb | 410 kg |
| Safe Working Load Ball Bearing | 500 lb | 225 kg |
| Weight | 3 oz | 83 g |
Cheeks are constructed of tumbled and polished stainless steel for maximum resistance to corrosion and cracking common to other plastic designs. Sheaves are made of tough, high impact Delrin, and turn on polished, stainless steel spacers that prevent the cheeks from binding the sheave even under heavy load.
Manufacturer part number: 02-24
2 Series Blocks are perfect for vangs, outhauls, backstays, cunninghams and other control blocks on a wide variety of boats. .
Schaefer's 8 Series Stainless Blocks add strength and brilliance to your deck. Featuring Delrin sheaves, forged stainless steel D shackles, bolted construction for strength and Stainless Steel cheeks polished to a high luster add beauty and confidence to your boat.
| Features | American | Metric |
|---|---|---|
| Description | Double Block with Upset Shackle | |
| Length | 3 9 /32 in | 83 mm |
| Width | 1 3/16 in | 30 mm |
| Overall Thickness | 1 1/8 in | 28 mm |
| Sheave | 1 1/16 in | 27 mm |
| Sheave Width | 3/8 in | 9 mm |
| Maximum Line | 5/16 in | 8 mm |
| Pin | 3/16 in | 5 mm |
| Safe Working Load Stainless | 900 lb | 410 kg |
| Safe Working Load Ball Bearing | 500 lb | 225 kg |
| Weight | 3 oz | 83 g |
Cheeks are constructed of tumbled and polished stainless steel for maximum resistance to corrosion and cracking common to other plastic designs. Sheaves are made of tough, high impact Delrin, and turn on polished, stainless steel spacers that prevent the cheeks from binding the sheave even under heavy load.
Manufacturer part number: 02-24
