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

Convert Straight-Line Cable Systems to High-Capacity Compound Lifts

Transform your boat-lift from a straight-line setup into a higher-capacity compound system with our USA-made 316 Stainless Compounding Kit. Each kit contains four 4" diameter × 3/4" wide aluminum sheaves manufactured in the United States with Oilite® bronze bushings, plus matching 3/4"-10 × 3-1/2" axle bolts precision-machined in the USA and equipped with built-in zerk grease fittings. All hardware is A4 (316) marine-grade stainless for maximum corrosion resistance in saltwater environments.

Key Features

• Made in the USA: Both sheaves and axle bolts are domestically produced for strict quality control.
• Complete Compounding Kit: 4 sheaves, 4 axle bolts (grease-fit), 4 lock washers, 4 hex nuts—all 316 stainless or aluminum/Oilite®.
• 316 (A4) Stainless Hardware: Outperforms 18-8 in salt, sun & moisture, ensuring long-term reliability.
• Built-In Zerk Grease Fittings: Quick lubrication extends bearing life and keeps lifts quiet.
• Oilite® Bronze Bushings: Self-lubricating inserts provide smooth cable travel and minimize wear.
• Enhanced Lift Capacity: Converts 8K-rated aluminum cradles (or similar) to compound routing for greater load distribution.

Product Description

Upgrade Your Lift—American Quality:
This kit streamlines the switch to compound cabling, boosting capacity and reducing strain. USA-made sheaves ensure precise groove tolerances, while U.S.-machined axle bolts deliver perfect thread fit and concentricity.

Marine-Grade Peace of Mind:
A4/316 stainless resists pitting and rust in saltwater. Integrated grease fittings make service simple, keeping your lift in motion and out of the repair shop.

Universal Compatibility:
Designed to fit most 3/4" pulley brackets and cradle beams, ideal for side-mount, overhead, and pile-mount boat-lift systems—or any industrial application requiring rugged sheave assemblies.

Specifications

• Sheaves (x4): Made in USA – 4" Ø × 3/4", aluminum, Oilite® bronze bushing
• Cable Capacity: Up to 5/16"
• Axle Bolts (x4): Machined in USA from imported blanks– 316 SS, 3/4"-10 × 3-1/2", built-in zerk fitting
• Lock Washers (x4) & Hex Nuts (x4): 316 SS, imported to Monster Bolts specifications
• Recommended Use: Upgrading straight lifts to compound, dock/boat-lift assemblies

*Kit assembled in Florida. Sheaves are U.S.-manufactured; axle bolts are machined in the USA from imported 316 stainless blanks; lock washers & nuts are globally sourced to ASTM/ISO specs.

Why Choose This U.S.-Made Kit?

American Craftsmanship: Tighter tolerances and consistent quality.
316 Stainless Reliability: Superior rust defense for saltwater installs.
Built-In Maintenance: Zerk fittings keep bearings greased without teardown.
All-in-One Convenience: Everything matched and ready—no piecemeal sourcing.

Order Yours Today!

Upgrade to an American-made, corrosion-proof compound lift with our 316 Stainless Cradle Compounding Kit. Buy now and get fast U.S. shipping plus Monster Bolts’ expert support.

✔️ Proudly made & machined in the USA   ✔️ Trusted by marine professionals