# 3/8"-16 x 1-3/4" Hex Head Shoulder Bolt – 3/4" Shoulder, 1" Thread, Zinc Plated Steel

Get strength you can count on with our Hex Head Bolt – 3/8"-16 x 1-3/4" Zinc Plated Steel, designed for tough fastening tasks across industrial, automotive, and general construction use. Engineered from durable steel with a zinc-plated finish, this bolt offers exceptional tensile strength and corrosion resistance, making it suitable for both indoor and outdoor projects.

Featuring a 3/8"-16 UNC coarse thread pitch, this bolt is designed with a 3/4" smooth shoulder and 1" of threaded length. The shoulder provides proper spacing and allows for smooth pivot or hinge movement, while the threaded portion ensures a secure hold when used with a hex nut or in a pre-tapped hole. The hex head design enables easy tightening with a wrench, ratchet, or socket, allowing for high torque applications with minimal slippage.

Whether you're installing garage door hardware, assembling steel frameworks, or performing automotive repairs, this bolt offers dependability, durability, and precision fit. Its zinc coating adds an extra layer of rust protection, extending service life in damp, humid, or outdoor environments.

Perfect for builders, mechanics, and DIYers alike, this bolt delivers professional-grade performance where strength and corrosion resistance matter most.

-   Zinc-Plated for Superior Corrosion Resistance: The zinc plating acts as a protective barrier against moisture and oxidation, making it ideal for use in garages, outdoor frames, or metal assemblies exposed to harsh elements.
-   Heavy-Duty Steel Build for Maximum Strength: Manufactured from high-grade carbon steel, this 3/8"-16 bolt offers exceptional durability and tensile strength, ideal for mechanical, structural, or automotive applications.
-   3/4" Shoulder with 1" Threaded Section: Provides proper spacing and support for pivoting components while maintaining secure threaded engagement.
-   Hex Head Design for Easy Tool Engagement: The six-sided head design allows secure tightening with common hand tools and power drivers, giving better torque without rounding or slippage.
-   Perfect for Garage Door, Automotive & Construction Use: Commonly used in garage door systems, machinery, brackets, and metal assemblies. Compatible with standard 3/8"-16 hex nuts.

## Details

- **Price:** 1.99 USD - 29.99 USD
- **Vendor:** Express Garage Doors

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 5 Pack | 1.99 USD | In stock |
| 10 Pack | 3.99 USD | In stock |
| 25 Pack | 8.99 USD | In stock |
| 100 Pack | 29.99 USD | In stock |

## Images

- Hex Head Full Thread Bolt – 3/8"-16 x 1-3/4" Zinc Plated Steel
- Hex head full thread bolt 3/8"-16 x 1-3/4" zinc plated – close-up front angle
- Side profile of 3/8"-16 x 1-3/4" zinc-coated steel bolt showing full threading
- Zoomed-in hex bolt showing thread spacing and head structure for secure fastening
- Pack of zinc plated 3/8"-16 bolts ideal for garage doors, construction and metal assemblies
- Assorted full thread bolts scattered to show detail and bulk appearance
- High quantity of hex head 3/8"-16 x 1-3/4" bolts for heavy-duty industrial or contractor use

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> Source: [Express Garage Doors](www.expressgaragedoors.com/products/3-8-16-x-1-3-4-hex-shoulder-bolt-3-4-shoulder-1-thread-zinc)
> Updated: 2026-04-13