Hillman 3/8 in. Diameter x 4 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-Pack
SKU: 37040353714

Hillman 3/8 in. Diameter x 4 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-Pack

Sale price$73.79 Regular price$81.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Hillman 3/8 in. Diameter x 4 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-PackHillman Grade 8 Hex Head Cap Screws, 3 8" x 4", 50 Pack Heavy duty hex head cap screws made from heat treated Grade 8 steel for superior strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for fastening into nuts or tapped holes. Coarse thread design ensures reliable assembly in demanding applications. Key Features: Grade 8 Strength: Heat treated steel delivers high tensile performance for heavy

Hillman Grade 8 Hex Head Cap Screws, 3/8" x 4", 50-Pack

Heavy-duty hex head cap screws made from heat-treated Grade 8 steel for superior strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for fastening into nuts or tapped holes. Coarse thread design ensures reliable assembly in demanding applications.


Key Features:

  • Grade 8 Strength: Heat-treated steel delivers high tensile performance for heavy-duty projects
  • Washer Face Seal: Built-in washer face under the head helps create a better seal
  • Partially Threaded Shank: Provides alignment strength with threaded grip where it counts
  • Corrosion-Resistant Finish: Yellow dichromate coating enhances durability and wear resistance
  • Multipack Convenience: Boxed 50-pack for jobsite or shop efficiency

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 4 inch
Material Steel
Finish Heat-treated yellow dichromate
Grade Grade 8
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded
Number in Package 50
Packaging Type Boxed
Use For use with a nut or in a tapped hole; tighten with wrench or drill

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are partially threaded along the shank.


Q: What tools are needed for installation?
A: Tighten with a wrench or a compatible drill/driver and hex socket.


Q: What thread type do these bolts use?
A: Coarse thread.


Q: Can these be used with nuts or tapped holes?
A: Yes. They are designed for use with a nut or in a properly tapped hole.


Q: What is the diameter and length?
A: 3/8 inch diameter and 4 inch length.


Industrial Polish with Uncompromising Strength

These Grade 8 cap screws bring a refined industrial character to custom builds, pairing a clean hex silhouette with a luminous yellow dichromate finish. The partially threaded shank offers a tailored, architectural look while maximizing performance. Style them with exposed hardware on thick timber or steel frames for a confident, modern edge. A must-have detail that elevates craftsmanship and durability in any luxe workspace or loft setting.


Choose Hillman Grade 8 cap screws for reliable, high-strength fastening—perfect for your next heavy-duty build.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37040353714

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 2191 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
mmanderson8
Cuba, US
★★★★★ 5
Exactly as described
Color: Red2
Very sturdy and definitely protects my iPad. Great buy even has a part of the pen. Fits perfectly no issues putting it on and it has layers to ensure that your iPad is protected. Color is exactly as pictured. Easy to use and charges fine with the case on
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
N
Verified Purchase
NY
Whiting, US
★★★★★ 5
Not broken yet.
Color: Light Purple
I bought this for my daughter’s tablet and she has put it through the test. It has been dropped multiple times and the tablets still good. It was easy to put on, looks good, and does the job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
Durable and good case!
Color: Black
Excellent sturdy case to protect iPad. Would buy again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
K
Verified Purchase
Kelley Mitchell
Port Orchard, US
★★★★★ 5
Well made
Color: Blue
It’s great, better than I expected. I love I love the color and the fit is perfect. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
C
Verified Purchase
Carrie A Balashaitis
Fort Morgan, US
★★★★★ 4
Good buy
Color: Black
Sturdy and fits perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

recommand products