USA-Machined 3/4" × 3-1/2" 316 Stainless Steel Axle Bolt with Zerk Grease Fitting

Secure Fastening for Sheave Systems, Dock Assemblies & Boat-Lift Mechanisms

Experience rust-proof reliability with our 3/4"-10 × 3-1/2" Axle Bolt, precision-machined in Florida from imported 316 stainless blanks. A built-in 1/4" zerk grease fitting lets you lubricate on the fly, keeping sheaves, beam clamps, and other rotating assemblies running smoothly in harsh marine environments.

Key Features

• USA Machining: CNC-finished threads and concentricity for a perfect fit.
• Heavy-Duty Size: 3/4" diameter × 3-1/2" length, 10 TPI coarse.
• Built-In Grease Fitting: 1/4" stainless zerk simplifies maintenance.
• 316 (A4) Stainless: Superior corrosion resistance for salt, sun & spray.
• Universal Compatibility: Coarse UNC threads fit standard sheave housings and I-beam brackets.

Product Description

Marine-Ready Durability: A4 stainless shrugs off pitting, chlorides & UV—ideal for dock hardware.

Smooth Operation: Zerk fitting lets you grease without teardown, reducing friction and noise.

Versatile Installation: Perfect for aluminum sheaves, cable winders, and heavy industrial rigs requiring a robust 3/4" axle bolt.

Specifications

• Bolt Size: 3/4"-10 × 3-1/2"
• Material: 316 (A4) stainless steel
• Origin: Machined in USA from imported blank
• Grease Fitting: 1/4" stainless zerk (press-fit)
• Thread Type: Coarse UNC, 10 TPI
• Weight: ≈ 0.5 lb
• Recommended Use: Sheave housings, aluminum I-beam clamps, boat-lift cable systems, dock installs

Why Choose This Axle Bolt?

Corrosion Armor: Full 316 stainless defends against rust & pitting.
Domestic Precision: U.S. machining ensures flawless threads and straightness.
Maintenance Friendly: Zerk fitting keeps lubrication quick and clean.

*Bolt blank sourced internationally; final machining and QC performed in Florida, USA.*

Order Yours Today!

Upgrade your lift or dock with this USA-machined 316 Axle Bolt. Buy now for fast shipping and expert support from Monster Bolts.

✔️ Trusted by marine & industrial pros  ✔️ Built for long-term saltwater exposure