Search  for anything...
Fullerkreg

(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg

  • Based on 934 reviews
Condition: New
Checking for the best price...
$10.99 Why this price?
Save $27.00 was $37.99

Buy Now, Pay Later

As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Jun 23
Order within 23 hours and 23 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: (5 Sets) 5/16x4"


Features

  • A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners.
  • As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together.
  • Made from 18-8 stainless steel, FullerkregR brand screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
  • Screws that meet ASME specifications comply with these dimensional standards.DIMENSIONS: Diameter: 5/16" | Length: 4" | Thread Type: 18 tpi Coarse Thread (Standard)
  • Package includes ten each of bolts, hex nuts , Flat & Lock washers

Size: (5 Sets) 5/16x4"


Color: Plain


Material: Stainless Steel


Brand: Fullerkreg


Fastener Type: Bolt


Size Name: (5 Sets) 5/16x4"


Item Diameter: 0.31 Inches


Number of Pieces: 5


Outside Diameter: 0.31 Inches


Screw Head Style: Hex


Thread Size: 5/16"-18


Compatible Groove Diameter: 0.31 Inches


Color: Plain


Item Shape: Cylindrical


Material Type: Stainless Steel


Finish Types: Plain


Brand: Fullerkreg


Fastener Type: Bolt


Number Of Items: 10


Set Name: 5-Piece Stainless Steel Hex Bolt Set with Nuts and Washers


Manufacturer: Fullerdongluo


UPC: 799862376933


Part Number: 1


Model: 1


Unit Count: 5 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Quality set
Size: (10 Sets) 5/16x1-1/2"
Very good kit with various sizes, works perfect. Good value for the price.
Reviewed in the United States on April 26, 2026 by S. Bates
    • Awesome bolts!
Size: (10 Sets) 5/16x1-1/4"
I recently needed a robust fastening solution for a project that required strength and corrosion resistance, and this 5/16-18x1-1/4" Stainless Steel Hex Head Screw and Nut Kit with 5/16 Nuts and 5/16 Fender Flat Washers proved to be exactly what I needed. I'm extremely impressed with the quality and performance of these fasteners. Right out of the box, you can tell these are made to last. The stainless steel construction is top-notch, giving them excellent resistance to rust and corrosion, which is crucial for outdoor and other demanding applications. What really stood out to me was how incredibly strong these screws and nuts are. I put them to the test in a demanding application, and they held up flawlessly. There was no stripping, bending, or any signs of weakness, even under significant stress. The inclusion of the fender washers is a great bonus. They provide a wider bearing surface, distributing the load more evenly and preventing damage to the materials being fastened. This added stability and security is a big plus. The threads on the screws are clean and precisely cut, making for smooth and easy installation. The nuts fit perfectly, and the whole assembly feels incredibly solid and secure once tightened. If you're looking for a reliable and incredibly strong fastening solution, especially one that can withstand harsh conditions, I highly recommend this 5/16-18x1-1/4" Stainless Steel Hex Head Screw and Nut Kit. The quality and strength of these fasteners are exceptional, and they've exceeded my expectations in every way. Great set of bolts! ... show more
Reviewed in the United States on December 16, 2024 by Alan R
    • good value
Size: (10 Sets) 5/16x1-1/2"
great quality
Reviewed in the United States on April 22, 2026 by russell sidebottom
    • Type 304 SS Bolts
Size: (10 Sets) 5/16x2-1/2"
Good product for boat trailers.
Reviewed in the United States on April 19, 2026 by Amazon Customer
    • Quality threading and Strength!!
Size: (10 Sets) 5/16x3"
Threading was of good quality and was easy to work with throughout the process.
Reviewed in the United States on May 18, 2026 by Highlander
    • Nice bolt sets, packaged well, arrived quickly.
Size: (10 Sets) 5/16x2-1/2"
We're using this for customizing a hot tub and due to the chlorine and massive amounts of water, stainless was the best option. These arrived quickly and proved to be perfect for our application. The ratcheted up nice and tight, without breaking or stripping and being stainless, rust and corrosion are not a concern. The price for 10 sets is quite fair, so it's safe to say these are good bargain for a specialty fastener. ... show more
Reviewed in the United States on October 29, 2024 by Wookieecantina
    • I appreciate it
Size: (5 Sets) 5/16x4"
Thank you
Reviewed in the United States on May 4, 2026 by Jada Savage
    • Good item
Size: (10 Sets) 5/16x1"
Appears to be a good product and it should work well.
Reviewed in the United States on September 25, 2025 by wow

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...