T-H Marine Jack Plate Bolt Kit BK-1, 1/2-20 x 2-3/4 Inch Stainless Steel Bolts with Lock Nuts and Washers

The T-H Marine BK-1 Jack Plate Bolt Kit is a complete stainless steel hardware set designed to mount outboard motors to jack plates. Each kit includes four 1/2-20 x 2-3/4 inch fine thread stainless steel bolts with a shoulder for a precise, secure fit, along with four brass lock nuts featuring nylon inserts to resist vibration loosening, and eight flat stainless steel washers for load distribution and a clean finish. The stainless steel construction resists corrosion in saltwater and freshwater marine environments, making this kit suited for the demands of outboard rigging.

This kit is offered as a partially (half) threaded bolt configuration; boaters who need a fully threaded bolt for their setup should confirm they are ordering the correct variant, as that is a separate part. With sixteen total pieces (bolts, nuts, and washers), the BK-1 kit provides everything needed to complete a jack plate to outboard motor mounting job without sourcing individual fasteners.

Specifications

• Brand: T-H Marine
• Manufacturer Part Number: BK-1
• Kit Contents: 4 bolts, 4 lock nuts, 8 washers (16 pieces total)
• Bolt Thread Size: 1/2-20 inch (fine thread)
• Bolt Length: 2-3/4 inches
• Bolt Style: Shouldered bolt, partially threaded
• Bolt Material: Stainless Steel
• Washer Material: Stainless Steel, flat style
• Lock Nut Material: Brass with nylon insert
• Finish: Stainless Steel, brushed
• Weight: 1.08 pounds
• Product Dimensions: 8.5 x 5.5 x 5.5 inches
• UPC: 733572002201

Fitment

This is a universal mounting hardware kit for attaching outboard motors to jack plates; it is not restricted to a specific engine make or model.

Frequently Asked Questions

What does the T-H Marine BK-1 Jack Plate Bolt Kit include? The BK-1 kit includes four 1/2-20 x 2-3/4 inch stainless steel shoulder bolts, four brass lock nuts with nylon inserts, and eight stainless steel flat washers, for 16 pieces total.

What is the bolt thread size on the BK-1 kit? The bolts in the T-H Marine BK-1 kit are 1/2-20 fine thread, measuring 2-3/4 inches in length.

Are the bolts in the BK-1 kit fully threaded? No, the BK-1 kit uses partially (half) threaded shoulder bolts. A fully threaded version of this bolt kit is available as a separate part for buyers who need that configuration.

What material is the BK-1 Jack Plate Bolt Kit made from? The bolts and washers are stainless steel with a brushed finish, and the included lock nuts are brass with a nylon insert for vibration resistance.

What is the BK-1 kit used for? This T-H Marine hardware kit is used to mount an outboard motor to a jack plate, providing the bolts, nuts, and washers needed for the job.

Does the BK-1 kit fit a specific outboard motor make or model? The BK-1 kit is a universal mounting hardware set for attaching outboard motors to jack plates and is not limited to one engine make or model.

How much does the T-H Marine BK-1 kit weigh? The BK-1 Jack Plate Bolt Kit weighs 1.08 pounds.

Are the lock nuts included with the BK-1 kit reusable? The BK-1 kit's lock nuts have a nylon insert designed to resist loosening from vibration, which is standard for marine mounting hardware, though heavily worn nylon inserts should be replaced with fresh hardware for a secure mount.

What is the difference between the BK-1 and BK-2 bolt kits? The T-H Marine BK-1 kit uses partially threaded (half-threaded) bolts, while the BK-2 kit uses fully threaded bolts; both are otherwise similar hardware kits for jack plate mounting.

Is the stainless steel hardware in the BK-1 kit corrosion resistant? Yes, the bolts and washers in the BK-1 kit are stainless steel, built to withstand saltwater and freshwater marine environments.

How many pieces come in one BK-1 kit? One T-H Marine BK-1 kit contains 16 pieces: 4 bolts, 4 lock nuts, and 8 washers.

What are the dimensions of the BK-1 kit packaging? The T-H Marine BK-1 Jack Plate Bolt Kit ships in packaging measuring 8.5 x 5.5 x 5.5 inches.