✨ Get 20% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Best Seller 1-8 X 3 1/2 Grade 8 Hex Cap Screw Plain Domestic Usa (10) Save 55% Now [Z1joPaDz]

$29.99 $95.99 -69%

1-8 x 3 1/2 Grade 8 Hex Cap ScrewIntroducing our premium 1-8 x 3 1/2 Grade 8 Hex Cap Screws, designed for exceptional strength and durability. These screws are meticulously crafted in the USA from high-quality medium carbon alloy steel, ensuring supe

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

1-8 x 3 1/2 Grade 8 Hex Cap Screw

Introducing our premium 1-8 x 3 1/2 Grade 8 Hex Cap Screws, designed for exceptional strength and durability. These screws are meticulously crafted in the USA from high-quality medium carbon alloy steel, ensuring superior performance in a variety of applications. With a diameter range from 1/4 to 1 1/2 inches, our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications, and diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD. This means you can rely on the integrity and quality of these screws for your most demanding projects.
  • Manufactured in the USA for top-notch quality assurance
  • Meets or exceeds SAE J429 and ASTM A354 specifications

Technical Specifications and Features

Our Grade 8 Hex Cap Screws are engineered to deliver exceptional performance. Each screw is produced with rolled threads for increased strength and resistance to stripping. The yellow zinc plated finish not only enhances corrosion resistance but also meets or exceeds ASTM F1941 standards. With typical hardness ranging from HRC 33-39 for diameters 1/4 to 2 1/2 inches, and HRC 31-39 for diameters over 2 1/2 inches, these screws are built to last. Tensile strength is also impressive, with a minimum of 150,000 psi for diameters 1/4 to 2 1/2 inches and a minimum of 140,000 psi for diameters over 2 1/2 inches.
  • Yellow zinc plated for enhanced corrosion resistance
  • High tensile strength with a minimum of 150,000 psi

Practical Applications and Benefits

Whether you're a professional tradesperson or a DIY enthusiast, our Grade 8 Hex Cap Screws are the ideal choice for a wide range of applications. From construction projects to automotive repairs, these screws offer the strength and reliability you need to get the job done right. With their exceptional hardness and tensile strength, they are perfect for heavy-duty use, ensuring long-lasting performance. Invest in our Grade 8 Hex Cap Screws and experience the peace of mind that comes with knowing you've chosen the best for your projects.
  • Perfect for heavy-duty applications and construction projects
  • Enhanced reliability and strength for all your projects

What Our Customers Say

December 26, 2025

Absolutely no complaints!

It’s a very useful and impressive gadget.

- Dyfed D..

December 26, 2025

Absolutely no complaints!

A great product that is worth having.

- Pembroke F..

December 26, 2025

Absolutely no complaints!

A product that is a joy to work with.

- Rowena D..

Write a Review

You Might Also Like

Discover more great products from our collection.

Pulse

Pulse

(815)
$48.99 $156.99 -69%
33AH Battery w/Harness

33AH Battery w/Harness

(353)
$37.99 $121.99 -69%
15 oz Bubble Mug - Egg Hunt

15 oz Bubble Mug - Egg Hunt

(724)
$17.99 $57.99 -69%
12'6

12'6" X 29" S.I.C Okeanos

(419)
$67.99 $217.99 -69%
All Day Bra Sets

All Day Bra Sets

(48)
$18.99 $60.99 -69%

Copyright 2025 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY