316 Stainless Steel Cradle Compounding Kit (4-Pack) – 4" x 3/4" Sheaves & 3/4"-10 x 3-1/2" Axle Bolts

Convert Straight-Line Cable Systems to Compound Configurations

Transform your boat lift from a standard straight-line cable setup into a higher capacity compounded system with our 316 Stainless Steel Cradle Compounding Kit. Designed for heavy-duty performance in marine environments, this kit includes four 4" diameter x 3/4" wide aluminum sheaves with oilite bronze bushings, plus matching 3/4"-10 x 3-1/2" axle bolts—each with a built-in Zerk grease fitting for easy lubrication. Unlike standard 18-8 hardware, our A4 (316) marine-grade stainless steel resists rust, pitting, and corrosion in the harshest saltwater conditions, making it the ideal solution for boat lifts, dock assemblies, and more.

Key Features

• Complete Compounding Kit: Includes four 4" diameter x 3/4" wide sheaves (with oilite bronze bushings), four 3/4"-10 x 3-1/2" axle bolts (316 stainless), four 316 stainless lock washers, and four 316 stainless nuts.
• 316 (A4) Marine-Grade Stainless Steel: Superior corrosion and rust resistance compared to 18-8, ensuring long-lasting performance in saltwater and harsh outdoor environments.
• Built-In Zerk Grease Fittings: Each bolt features a 1/4" grease fitting for quick, convenient lubrication—reducing friction and extending component life.
• Aluminum Sheaves with Oilite Bronze Bushings: Smooth cable operation and reduced wear; fits cable sizes up to 5/16".
• Enhanced Lift Capacity: Converts existing straight-line cable systems into compounded setups for improved strength on 8K (or similarly rated) aluminum boat cradles.

Product Description

Upgrade Your Boat Lift Easily:
This kit simplifies the process of adding compound cable routing to your lift system, increasing lifting capacity and reducing strain on cables. Whether you’re retrofitting an existing 8,000 lb. aluminum cradle or building a new dock installation, each component is engineered for durability and reliable performance.

Premium Marine-Grade Construction:
By choosing 316 (A4) stainless steel hardware, you gain superior resistance to corrosion, oxidation, and pitting—particularly crucial in saltwater or brackish water environments. The integrated grease (Zerk) fittings allow for quick maintenance, helping ensure smooth sheave rotation and minimal downtime.

Versatile Compatibility:
Perfectly sized to fit most aluminum pulley brackets and cradle beams, the kit is an excellent upgrade for side-mount, overhead, or pile-mount boat lift configurations. It’s also suitable for a wide variety of industrial or marine applications requiring 3/4" axle bolts and robust sheave components.

Specifications

• Sheaves (x4): 4" diameter x 3/4" wide, aluminum, oilite (oil-impregnated) bronze bushings
• Cable Acceptance: Up to 5/16"
• Axle Bolt (x4): 3/4"-10 x 3-1/2", 316 (A4) stainless steel, with 1/4" grease fitting
• Lock Washers (x4): 316 (A4) stainless steel
• Hex Nuts (x4): 316 (A4) stainless steel
• Recommended Use: Converting standard cable lifts to compound setups, sheave housing kits, and dock/boat lift assemblies

Why Choose This Compounding Kit?

Corrosion Resistance: 316 (A4) stainless steel stands up to salt, sun, and moisture better than 18-8 hardware.
Increased Lift Efficiency: Compounded cable routing distributes load more effectively, enhancing lift capacity.
Convenient Maintenance: Integrated grease fittings on each bolt streamline lubrication for smooth, quiet operation.
All-In-One Solution: Get sheaves, bolts, lock washers, and nuts—no separate parts required for installation.

Order Yours Today!

Convert your straight-line cable system into a more robust, compounded setup with our 316 Stainless Steel Cradle Compounding Kit. Order now to enjoy Monster Bolts’ fast shipping and exceptional customer service, and upgrade your boat lift or dock system to its fullest potential!

✔️ Trusted by marine professionals and DIY enthusiasts alike

✔️ Built to last in demanding marine environments