Hillman 5/16-18 x 4 in. Stainless Steel Hex Head Cap Screws (25-Pack)
SKU: 69585900087

Hillman 5/16-18 x 4 in. Stainless Steel Hex Head Cap Screws (25-Pack)

Sale price$37.79 Regular price$41.99
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 5/16-18 x 4 in. Stainless Steel Hex Head Cap Screws (25-Pack)Stainless Steel 5 16 18 x 4 in. Hex Head Cap Screws, 25 Pack Durable 18 8 stainless steel hex head cap screws designed for high torque fastening in corrosive environments. Partially threaded with a washer face under the head for a better seal, ideal for use with nuts or tapped holes. Key Features: Corrosion Resistant 18 8 Stainless: Withstands moisture and outdoor exposure for long lasting hold. High Torque Hex Head: Machine threads and hex cap design

Stainless Steel 5/16-18 x 4 in. Hex Head Cap Screws, 25-Pack

Durable 18-8 stainless steel hex head cap screws designed for high-torque fastening in corrosive environments. Partially threaded with a washer face under the head for a better seal, ideal for use with nuts or tapped holes.


Key Features:

  • Corrosion Resistant 18-8 Stainless: Withstands moisture and outdoor exposure for long-lasting hold.
  • High-Torque Hex Head: Machine threads and hex cap design accept wrench or driver for strong tightening.
  • Washer Face Under Head: Helps create a better seal and distributes load evenly.
  • USS Partially Threaded Shank: Added shear strength where it matters, threads where you need grip.
  • Value Pack: 25 screws per boxed pack for project efficiency.

Specifications Table:

Specification Details
Brand Hillman
Type Hex head cap screw
Diameter-Thread 5/16-18
Length 4 in
Material 18-8 Stainless Steel
Finish Stainless Steel
Thread Type Coarse
Shank USS partially threaded
Head Style Hex cap with washer face under head
Pieces per Pack 25
Packaging Type Boxed
Installation Use with wrench or driver; with nut or tapped hole
Unit of Measurement (from source) Listed as Metric on source page; dimensions provided in inches

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are USS partially threaded with machine threads near the tip.


Q: What thread size and pitch are these screws?
A: 5/16-18 coarse thread.


Q: What is the overall length?
A: 4 inches from under the head to the tip.


Q: Can these be used outdoors or in marine environments?
A: Yes, the 18-8 stainless steel offers enhanced corrosion resistance suitable for outdoor use; for harsh marine/salt exposure, confirm specific grade requirements.


Q: How are they installed?
A: Use a wrench or a driver on the hex head; pair with a matching 5/16-18 nut or install into a tapped 5/16-18 hole.


Sleek Utility with Enduring Stainless Presence

There’s a quiet elegance in hardware that performs flawlessly and looks crisp doing it. The clean hex head and slender, partially threaded shank bring an industrial polish that complements exposed joinery and modern cabinetry. Style it with matte-black brackets or blonde woods to let the stainless glint punctuate the composition. It’s a small detail that delivers a luxurious, intentional finish.


Upgrade your build with corrosion-resistant stainless strength—add this 25-pack to your cart today.

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: 69585900087

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 947 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
KC
Waukegan, US
★★★★★ 5
Very pleased with this item.
Color: White, Size: Large
Sturdier material than I expected, but still cool and comfortable. Excellent fit. Not baggy at all. Just a comfortable, relaxed fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
L
Verified Purchase
Lydia Mata
Omaha, US
★★★★★ 5
Mens outfit
Color: Khaki, Size: XX-Large
My husband really likes them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
C
Verified Purchase
Carpenter done
Omaha, US
★★★★★ 4
Great for hot weather.
Color: White, Size: X-Large
It was good purchase. Nice and thin for the temperatures we were in. 
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025
K
Verified Purchase
Kim
Belleville, US
★★★★★ 5
Best last minute….
Color: White, Size: Medium
Well made, for the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
J
Verified Purchase
Joe shaw
Waukegan, US
★★★★★ 5
Very Comfortable and light Material
Color: White, Size: Large, Color: White, Size: Large
Bought this outfit for our Cruise for White Hot Night. Light, comfortable and so very stylish. Fabric is on the light side so recommend a neutral undergarment. Pants are a little on the loose side, shirt is true to size. Will really shrink a whole size if put in dryer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025

recommand products