SKU: 31244188240

Hillman 5/16-18 x 3-1/2 in Stainless Steel Hex Head Cap Screw, 50-Pack

Sale price$64.79 Regular price$71.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Hillman 5/16-18 x 3-1/2 in Stainless Steel Hex Head Cap Screw, 50-PackStainless Steel Hex Head Cap Screw, 5 16 18 x 3 1 2, 50 Pack Durable 18 8 stainless steel hex head cap screws for high torque fastening in tapped holes or with nuts. Coarse, partially threaded shank with washer face under the head delivers a secure seal and corrosion resistance for indoor outdoor projects. Key Features: Corrosion Resistant Stainless Steel: 18 8 stainless steel for long lasting performance in outdoor and marine environments High Torque

Stainless Steel Hex Head Cap Screw, 5/16-18 x 3-1/2, 50-Pack

Durable 18-8 stainless steel hex head cap screws for high-torque fastening in tapped holes or with nuts. Coarse, partially threaded shank with washer face under the head delivers a secure seal and corrosion resistance for indoor/outdoor projects.


Key Features:

  • Corrosion-Resistant Stainless Steel: 18-8 stainless steel for long-lasting performance in outdoor and marine environments
  • High-Torque Hex Cap Head: Hex head with machine threads supports strong, reliable tightening with a wrench or drill
  • Washer Face Under Head: Built-in washer face helps create a better seal and distribute load
  • Partially Threaded (USS): Coarse threads with a solid shank for strength where shear resistance matters
  • Bulk 50-Pack: Convenient boxed pack for jobs requiring multiple fasteners

Specifications Table:

Specification Details
Brand Hillman
Type Hex head cap screw
Diameter / Thread Pitch 5/16-18
Length 3-1/2 inch
Material 18-8 Stainless Steel
Thread Type Coarse
Thread Coverage Partially threaded (USS)
Head Feature Washer face under head
Finish Stainless steel
Number in Package 50
Packaging Type Boxed
Installation Tighten with wrench or drill
Package Dimensions (HxWxL) 2 in x 3.5 in x 4.5 in
Package Weight 3.3 lb

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are USS partially threaded along the shank with coarse machine threads.


Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill using an appropriate hex socket.


Q: Can these be used outdoors?
A: Yes. The 18-8 stainless steel offers enhanced corrosion resistance suitable for outdoor and damp environments.


Q: Do they have a built-in washer?
A: They feature a washer face under the head to improve sealing and load distribution.


Q: What size are these screws?
A: 5/16-18 thread diameter/pitch and 3-1/2 inch length.


Sleek, Industrial Fastening with Enduring Stainless Poise

These stainless hex cap screws bring a crisp, tailored precision to any build, marrying function with a polished industrial aesthetic. The subtle washer face and clean shank lines create a refined detail that elevates cabinetry, fixtures, and custom metalwork. Style them with brushed steel hardware and natural woods for a modern, textural contrast. A staple of luxurious craftsmanship, they deliver performance and poise in equal measure.


Upgrade your project with these corrosion-resistant stainless hex cap screws—order the 50-pack today for dependable, high-torque fastening.

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: 31244188240

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 964 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Customer
Belleville, US
★★★★★ 5
Great Product
Color: Matte White, Style: 3000K Warm White LED
Just had them installed. So far, really like them. Displaces a lot of air, are not noisy, and are pleasing to look at.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2024
N
Verified Purchase
Net Paper
Phoenix, US
★★★★★ 4
Great fan, quite, powerful
Color: Brushed Aluminum, Style: No Light Kit
Initially got bad receiver, after contracting customer service new one was shipped next day, after replacing it worked like a charm, no issues connecting to wifi
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2023
A
Verified Purchase
Al
Boise, US
★★★★★ 5
Smooth Operation
Color: Brushed Aluminum, Style: No Light Kit
This Fan has exceptional airflow and operates smoothly. I use the included remote control. It took a little white to install and it’s fairly heavy, but besides that, it’s great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2022
J
Verified Purchase
Jess
Carnegie, US
★★★★★ 5
Great for kids!
Color: White
I bought this stylus for the kids to use with their iPads, and it definitely gets the job done. It connects easily, charges fast, and works smoothly for drawing, writing, and playing around on apps. The palm rejection is a big plus—it makes it a lot easier for them to use without messing up what they’re doing. It’s also pretty responsive, which I wasn’t necessarily expecting at this price. Overall, it served its purpose well. If you’re looking for something affordable and functional for kids (or even light everyday use), this is a solid option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
T
Verified Purchase
Thomas
Belleville, US
★★★★★ 5
Rock-Solid Apple Pencil Replacement for iPad Mini
Color: White
Despite the box arriving pretty beat up inside the Amazon packaging, the pen itself was in perfect condition and it’s been outstanding. It works flawlessly with my iPad Mini (Gen 7, A17). The physical on/off button is a standout feature for me; the tactile click is far more satisfying and reliable than the touch-sensitive controls found on other pens. I primarily use this stylus while flying, taking notes in the air, and it performs exactly how I need it to. The magnetic attachment is especially impressive because it’s strong enough to add real security inside my iPad case. Even in rough air, I don’t have to worry about it getting knocked loose. I previously used a pencil from another brand that worked fine overall, but the weak (or nonexistent) magnetic hold was a dealbreaker. This one solves that problem completely and when it came time to buying a new pencil because I lost the old one, this was my choice. If you’re looking for a dependable, well-built Apple Pencil replacement with a solid magnetic connection and a satisfying physical control, this is an easy recommendation. You also CANNOT go wrong with the price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026

recommand products