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%

Pay in installments of $20.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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

4.2 ★★★★★
Based on 6 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
Erica
Houston, US
★★★★★ 5
Great tux
Size: Medium, Color: Black
The tux was delivered on time and was perfect for prom!!! Good material fit well and saved me a ton on rental!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
I
Verified Purchase
Ivis Lissette Campos
Phoenix, US
★★★★★ 4
It’s very beautiful, light fabric, fits well, my son is 6’7 and it fit perfectly
Size: Medium, Color: Navy Blue, Size: Medium, Color: Navy Blue
It’s absolutely beautiful, nice material but thin light pants, nice for hot weather, my son is very tall 6’7 and it fit like a glove, looked gorgeous in it, I recommend it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
S
Verified Purchase
Sabrina Brown
Los Angeles, US
★★★★★ 5
Excellent quality suit
Size: Medium, Color: Dark Green, Size: Medium, Color: Dark Green
This suit is EVERYTHING!! First it was the right price. I purchased this suit for my son's 8th grade formal. He's 5'9 167 lbs. I ordered a medium and it fit him very well. No alterations were needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
L
Verified Purchase
L. Cadle
Birmingham, US
★★★★★ 5
Great quality and price!
Size: X-Small, Color: Black Green, Size: X-Small, Color: Black Green
My son wore this to prom and it fit perfectly! He’s 5’8’’ and 140 pounds. XS was perfect! He wore a black shirt instead of white.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
K
Verified Purchase
Karl H.
Phoenix, US
★★★★★ 3
Not bad for price but they run small on size
Size: 3X-Large, Color: Black
Not bad for the price but they definitely run small. Thank God I ordered a 2x and a 3x for my daughter’s wedding this weekend I mailed the other back.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026

recommand products