SKU: 31244188240

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

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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

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M
Verified Purchase
Mary Beth Russell
Grantham, US
★★★★★ 5
Durable
Pattern Name: Detachable high wall
Much better then just using pads, and they can’t chew the pads.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
M
Verified Purchase
Michael
Belleville, US
★★★★★ 5
Great pee pad holder
Pattern Name: Detachable high wall
This pee pad holder has made me and my pup’s life so much easier! It’s light, easy to clean, and works well with my pup! It’s a lifesaver when it’s really cold and rainy outside for my pup to have a dry place to go potty. Would recommend to all dog owners, especially those in apartments with small spaces.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
S
Verified Purchase
Stanley Smiler
Bozeman, US
★★★★★ 4
Great
Pattern Name: Detachable high wall
Great quality, easy to clean, fit well the standard pee pad (24x24). Hopefully I can get my dog well trained to not have any accidents.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
A
Adena Canterbury
Bozeman, US
★★★★★ 5
A Game Changer for Puppy Training!
Pattern Name: Detachable high wall
I recently purchased the PAWISE Dog Pee Pad Holder Tray with Splash Guard, and I have to say, it has made a significant difference in our puppy training routine! First off, the size is perfect for my small to medium-sized dog. The 23.6-inch tray provides ample space for the puppy pads, and I've found that it holds them securely in place — no more slipping or sliding around, which is a major plus! The detachable high wall is a great feature, as it helps contain any messes or spills, keeping my floors clean. The splash guard really works; we had some initial worries about our puppy being a bit of a scatterer during pee time, but this tray has nearly eliminated those issues. Cleaning it is a breeze. The tray is easy to wipe down, and since it’s designed to keep everything contained, I don’t have to spend a long time cleaning up after accidents. I also appreciate the durable material—it's clear that it's built to last. One thing I didn't expect was how much my puppy took to it. He seemed to understand what it was for right away, which made the whole potty training process less stressful for both of us. The high-wall design gives him a sense of enclosure that I think he finds comforting. Overall, I would highly recommend the PAWISE Dog Pee Pad Holder Tray for anyone who's in the midst of puppy training. It’s functional, easy to clean, and has made our indoor potty routine much more manageable. This product is definitely worth the investment!
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Reviewed in the United States on January 2, 2026
F
Faithfulgirl
West Palm Beach, US
★★★★★ 5
Fur Family Necessity
Pattern Name: Detachable high wall
How have I gone so long without this in my life? I've struggled for a bit with my older dog and the messes he makes. He loves this potty pad and now I don't have to clean up as many messes as I once did. The holder cleans up easily and as long as he's not chewing on this, it should last a good long while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026

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