Name: Conquest 5/16" x 4-1/2" Carriage Bolt - 316 Stainless Steel
SKU: CB316SS-516X412
Price: 1.59 USD
Availability: InStock
Rating: 5.0 (15 reviews)

Conquest 5/16" x 4-1/2" Carriage Bolt - 316 Stainless Steel

When pairing a nut with a hex bolt, the material and finish must match. If these do not match, the nut will not fit the bolt.

The Conquest 5/16" Carriage Bolt made from 316 stainless steel is engineered to excel in the toughest environments. Whether you’re building near the coast, working with chemically treated wood, or constructing outdoor structures, this bolt offers exceptional resistance to rust and corrosion.

5/16" 316 Stainless Steel Carriage Bolts with Corrosion-Resistant Strength

Its rounded head and square neck design ensure a flush, tamper-resistant appearance with a secure grip that prevents rotation. Ideal for both structural and decorative use in marine, industrial, or outdoor residential applications.

Key Features

Diameter: 5/16"
Thread Type: Coarse
Threads Per Inch (TPI): 18
Material: 316 Stainless Steel – maximum corrosion protection
Head Type: Round domed head with square neck
Finish: Natural stainless for clean, polished appearance

Applications

Dock and pier construction
Decks, fences, and outdoor structures
Furniture, pergolas, gazebos
Trailer, marine, and equipment assembly
Coastal or chemically sensitive industrial builds

Installation Tips

Drill a clearance hole for proper neck seating.
Insert bolt with the domed head outward; ensure neck locks into material.
Secure from the nut side using a compatible 5/16" 316 stainless nut and washer (sold separately).
No need to hold the bolt head—tighten only from the nut side.

California Residents: WARNING

Industry-best Customer Service

As employee-owners, we take customer service very seriously. Our team members are dedicated, professionally-trained, and have decades of combined experience serving the industry. Always speak with a real person and never wait more than 1 business day.

Had the fasteners

Had a little trouble getting through the first step. The size i was looking for didn't show up, but I clicked on a simular bolt which takes you the real menu. Then I was able to put in all the specs and found exactly what I was looking for. Don't give up if your first search doesn't display the part you want.

The shipment arrived and is in great shape. However, it was delayed, which is fine, but after three notices of ‘your delivery will be there tomorrow’ I had no confidence and was annoyed with the updates.

On time, excellent quality, Perfect

Neede replacement bolt, washers and nuts for snow blower that and rusted. These SS parts were perfect and got it ready for next year.

Conquest 5/16" x 4-1/2" Carriage Bolt - 316 Stainless Steel

Description

Conquest 5/16" x 4-1/2" Carriage Bolt - 316 Stainless Steel