Hillman 3/8 in. Diameter x 3 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-Pack
SKU: 45408115550

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

Sale price$46.79 Regular price$51.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Hillman 3/8 in. Diameter x 3 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-PackHillman Grade 8 Hex Head Cap Screw 3 8 in. x 3 in. (50 Pack) Heavy duty hex head cap screws from Hillman deliver Grade 8 strength for demanding fastening applications. Made of heat treated steel with a protective yellow dichromate finish, these partially threaded bolts are ideal for use with a nut or tapped hole. Key Features: Grade 8 Strength: Heat treated steel provides high tensile performance for heavy duty assemblies Washer Face Head: Built in

Hillman Grade 8 Hex Head Cap Screw 3/8 in. x 3 in. (50-Pack)

Heavy-duty hex head cap screws from Hillman deliver Grade 8 strength for demanding fastening applications. Made of heat-treated steel with a protective yellow dichromate finish, these partially threaded bolts are ideal for use with a nut or tapped hole.


Key Features:

  • Grade 8 Strength: Heat-treated steel provides high tensile performance for heavy-duty assemblies
  • Washer Face Head: Built-in washer face under the hex head for improved load distribution and sealing
  • Partially Threaded Shank: Enhances shear strength and alignment in structural connections
  • Corrosion-Resistant Finish: Yellow dichromate coating adds wear and rust resistance
  • Bulk Pack Convenience: 50-pack for jobsite efficiency and consistent hardware matching

Specifications Table:

Specification Details
Brand Hillman
Diameter 3/8 inch
Length 3 inch
Material Steel
Grade Grade 8
Finish Heat-treated yellow dichromate
Thread Type Coarse (USS)
Head Type Hex head with washer face
Threading Partially threaded shank
Packaging Quantity 50 pack
Packaging Type Boxed
Use For use with a nut or tapped hole; tighten with wrench or drill

Frequently Asked Questions (FAQ):

Q: What size are these screws?
A: Each hex head cap screw is 3/8 inch diameter and 3 inches long.


Q: Are they fully threaded?
A: No. They are partially threaded along the shank for improved strength.


Q: What material and grade are they?
A: They are Grade 8 heat-treated steel for high strength applications.


Q: What thread type do they use?
A: Coarse thread (USS).


Q: How are they typically installed?
A: Tighten with a wrench or a drill driver into a nut or tapped hole.


Industrial Strength, Refined Utility

A bolt with presence—its burnished yellow dichromate sheen brings a subtle, utilitarian polish to exposed hardware moments. The crisp hex head and clean, partial thread feel engineered and intentional, perfect for cabinetry details or custom metalwork where hardware becomes part of the composition. Pair with matte black or oiled bronze elements to let the warm metallic tone sing. For projects that demand both beauty and brawn, this is a quiet essential.


Equip your project with Grade 8 confidence—add this 50-pack of Hillman hex head cap screws to your cart now.

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: 45408115550

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 1003 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
Gabriel L. De Mattos
Chelsea, US
★★★★★ 5
One cable does it all, rock solid Ethernet and great 4K output
This hub has simplified my desk setup considerably. I plug it into my MacBook and instantly have Ethernet, 4K HDMI, two USB-A ports, and 100W charging all from one connection. The Ethernet is Gigabit and the speeds are as fast as plugging directly into the router. The 4K HDMI output to my monitor is clean with no flickering. It runs slightly warm during extended use but nothing alarming. Build quality feels solid and UGREEN has been consistently reliable in my experience. Worth every penny if you need to expand a USB-C only laptop.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
R
Verified Purchase
Ruckus
Charlottesville, US
★★★★★ 4
Nothing Special
Works as intended. I bought it mostly for the Ethernet adapter which was plug and play with the latest installation of Fedora Linux and uses an AX88179 Gigabit Ethernet chipset. The Ethernet portion does not have activity lights. A bit of a lazy omission. Port locations are smartly placed with the HDMI output and power input at the back facing one direction, and the Type A USB peripheral ports facing the other. This is great for cable routing. The single Type C port is only for power delivery. It will not work for data to connect other peripherals.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
A
Verified Purchase
Ana Lucia Gonzalez
Charlottesville, US
★★★★★ 5
UGREEN
Very useful and compact USB-C hub. It easily expands connectivity with HDMI, USB ports, and fast charging support. The 4K HDMI output works well for presentations and streaming, and the 100W power delivery keeps devices charged without issues. Build quality feels solid, and it’s perfect for travel or daily use. Great value for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
C
Verified Purchase
ChrisJE
Lowell, US
★★★★★ 5
Compact and useful.
It's small and light enough to fit in my bag easily. My computer uses a USB-c charger, and there's only one port, but I was able to use it for ethernet, and pass the charging through the same port. I've had issues with my computer not recognizing charging from some sources before, so this was great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
Y
Verified Purchase
Yolando G.
Belleville, US
★★★★★ 5
Good choice
I like the design it looks sturdy. Te Number or ports is very useful
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026

recommand products