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
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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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Penny
Battle Creek, US
★★★★★ 3
Cute and predictable
Format: Kindle
Rom-com wrapped I’m a literary tote bag. The story was cute, predictable, but satisfying. Josie’s voice was cringy at times. Despite that, the characters are likable and everyone got their moment of closure. I’d give it one chile for spice.
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Reviewed in the United States on June 22, 2025
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Erin Alexander
Los Angeles, US
★★★★★ 4
Adorable Take on You’ve Got Mail!
Format: Kindle
This book was absolutely adorable. It’s a sweet, bookish twist on You’ve Got Mail that made me smile from start to finish. I loved all the little nods to book culture (including a fun reference to Nora Ephron!). Ryan was just the cutest, and Josie’s transformation felt really heartfelt. Yes, it was a little cheesy at times, but in the best possible way. The perfect cozy, feel-good read!
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Reviewed in the United States on July 27, 2025
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Sam
Houston, US
★★★★★ 5
i couldn’t put it down
Format: Kindle
It’s 2 in the morning and I’ve just finished reading this. I haven’t had a book make me stay up late reading in bed since I was in high school. Sure I have books that I can’t put down but the draw to this one was so enticing. Every time I tried to go to sleep or do something else I kept reaching for my kindle wanting more. I loved Josie and her character growth. I’ve felt how she feels, being guarded, feeling like you can’t show your true self, & what if when you are you people don’t like you or understand you. Seeing her let in chaos into her life was a simple reminder we all need that not everything has to be perfect. Ryan or Rj was the picture perfect boyfriend and the ending had me in tears 😭 we all need a good listener in our life who will be there when it matters most. The way he’s painted in Josie’s eyes to the sweetheart he is inside was so nice. Also, the nerdy but cute vibes he gives off. & can I just say reading about a reader who has dyslexia made me so giddy because I work with kids like that. I loved all of the lines about what reading was to them and why they got into reading. It made me feel so connected to the story line and reminded me why I read books. I loved the enemies to friends to lovers plot line. The story of them falling in love and how it happens differently for everyone. The story has its cutesy romance moments which I thought I’d hate but came to love. Plus, it has some real emotional conversations that had a knot in my throat. I enjoyed the depth that the characters brought to the story. The pacing was just perfect for me. A slow burn for the love to come in but I enjoyed their banter throughout. Plus all of their cute DMs back and forth were my favorite. One of my favorite things about the book is how it recognized the different types of readers there are and that it’s okay. I will be thinking about this book all throughout the day and recommending it to everyone. Read if you love: 💕 enemies to lovers 💕forced proximity 💕 slow burn 💕books about books 💕dual POV
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Reviewed in the United States on June 18, 2025
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beefaith_reads
Bozeman, US
★★★★★ 4
Love story with great character growth
Format: Kindle
You Got Mail vibes ☑️ Witty banter ☑️ Emotional vulnerability ☑️ I came for the romance about two bookstore managers vying to save their position and stayed for the character development, which is so well done. Josie and Ryan avoid romantic relationships at all costs due to past trauma. Josie is stoic and loves literary works while Ryan is an easy-going romance book lover. Can opposites work together for the greater good? Can they find love with each other? First as BookshopGirl, and RJ.Reads, and then as themselves, they learn to open up, heal old wounds, and connect on a deeper level. I couldn't help but cheer them on, and when they finally allowed each other in, my heart swooned. And that epilogue ... ALL. THE. FEELS. • Rivals to lovers • Dual POV • He falls first • Slow burn • Forced proximity • Opposites attract
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Reviewed in the United States on June 10, 2025
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Wandering Soul
Birmingham, US
★★★★★ 5
excellent!
Format: Kindle
I think this book was specifically designed for me. Book nerds, enemies to lovers, friends to lovers, slow burn, badass FMC, adorable MMC, great banter, trust issues and oldest daughter issues. The romance and the banter was excellent! Ryan and Josie were great characters. I loved everything about this book. Can’t wait to read the next book by Ali Brady!
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Reviewed in the United States on June 10, 2026

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