SKU: 28555173865

Hillman 5/16 in. Diameter x 5-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 5/16 in. Diameter x 5-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman Grade 5 Hex Head Cap Screws, 5 16 in. x 5 1 2 in., 50 Pack These Hillman Grade 5 hex head cap screws provide reliable fastening strength for automotive, machinery, and construction projects. Made of heat treated steel with a zinc finish, they feature a washer face under the head and coarse threads for secure assembly. Key Features: Grade 5 Strength: Heat treated steel provides higher tensile strength for demanding applications Corrosion

Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 5-1/2 in., 50-Pack

These Hillman Grade 5 hex head cap screws provide reliable fastening strength for automotive, machinery, and construction projects. Made of heat-treated steel with a zinc finish, they feature a washer face under the head and coarse threads for secure assembly.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding applications
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer Face Head: Integrated bearing surface under the hex head improves load distribution and sealing
  • Coarse Thread Design: Ideal for quick assembly and strong hold in tapped holes or with nuts
  • Bulk Contractor Pack: 50-pack for efficient stocking and project savings

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 5-1/2 inch
Material Steel
Finish Heat-treated zinc
Grade 5 (USS)
Head Style Hex head with washer face
Thread Type Coarse
Threading Partially threaded along shank
Units Imperial
Number in Package 50 pack
Packaging Type Boxed
Package Dimensions (L x W x H) 6.8 in x 4.5 in x 3.3 in
Package Weight 6.8 lb

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank (Grade 5 USS style).


Q: What tools are needed for installation?
A: Tighten using a wrench or driver/socket sized for a 5/16 in. hex cap screw with the appropriate nut and washer.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance suitable for many indoor and some sheltered outdoor uses; for harsh environments, consider galvanized or stainless options.


Q: What thread type do these screws have?
A: They use coarse threads (USS).


Q: What is included in the package?
A: A boxed 50-pack of 5/16 in. diameter x 5-1/2 in. length hex head cap screws.


Industrial polish with steadfast purpose

Clean-lined and quietly authoritative, these hex cap screws bring a refined industrial cadence to custom builds. The zinc finish offers a subtle gleam, while the crisp washer-faced head delivers a tailored, architectural detail. Pair them with matte black hardware for a chic, mechanical contrast or let them punctuate raw woods for modern utility. A small but essential flourish, they anchor craftsmanship with effortless sophistication.


Stock up on Hillman Grade 5 hex cap screws today for strong, reliable fastening that keeps projects moving.

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: 28555173865

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4.6 ★★★★★
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Emily
Battle Creek, US
★★★★★ 5
Welcome, weary traveler, to the world of OSBED Shredded Memory Foam Pillows
Size: King (Pack of 2)
Welcome, weary traveler, to the world of OSBED Shredded Memory Foam Pillows - where firmness meets flexibility in a delightful pillow dance of comfort and support! Picture this: a pillow as firm as a handshake from your grandma, yet as adaptable as a chameleon at a color-changing convention. With the magic of removable foam stuffing, you can sculpt these pillows to be as soft and huggable as a teddy bear, ensuring a customized snooze experience every night. The pillow cover? Ah, it's like the velvet ropes of the sleep world - luxurious, durable, and ready to cradle your head in style. It's the kind of cover that whispers "sweet dreams" as you drift off into slumberland. But wait, there's more! These pillows are cooler than the other side of your pillow, thanks to their cooling properties that rival a polar bear's favorite ice bath. Say goodbye to sweaty nights and hello to a refreshing sleep oasis. And the best part? These pillows won't cost you an arm and a leg. At a decent price, they offer a luxurious feel without the wallet-induced panic attacks. Plus, they're as shape-retentive as a yoga master holding a downward dog pose - no lumps, no bumps, just consistent comfort all night long. In a world filled with pillow pretenders, the OSBED Shredded Memory Foam Pillows stand tall as the champions of coziness, the sultans of support, and the emperors of easy adjustment. So, if you're seeking a blend of firmness, versatility, quality, coolness, affordability, and shape retention in your sleep companion, look no further than these pillows. Your neck and shoulders will thank you, and your dreams will be sweeter than ever before.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2024
S
Verified Purchase
Selena Etienne
Houston, US
★★★★★ 5
Cool memory foam pillows !
Size: Queen (Pack of 2), Size: Queen (Pack of 2)
Very fluffy! Very cool! Very comfortable !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
M
Verified Purchase
Matt S.
Lexington, US
★★★★★ 4
Very comfortable, luxurious, and affordable.
Size: Queen (Pack of 2)
Great pillow. Feels soft enough for comfort while being cool and cozy. There could be more filling to make it slightly more firm but otherwise a great pillow.
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Reviewed in the United States on May 22, 2026
R
Verified Purchase
Rosco
Fort Morgan, US
★★★★★ 5
Memory Foam Pillows
Size: Queen (Pack of 2)
recently purchased the OSBED Cooling Adjustable Shredded Memory Foam Pillow, and it has made a noticeable difference in my sleep quality. One of my favorite features is the adjustable fill, which allowed me to customize the height and firmness to perfectly support my neck and shoulders. Whether you’re a side, back, or stomach sleeper, it’s easy to find a comfortable setup. The cooling cover does a great job of preventing heat buildup throughout the night, which is a huge plus for anyone who tends to sleep warm. The shredded memory foam provides excellent support while still feeling soft and comfortable, and it doesn’t flatten out like some traditional pillows.
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Reviewed in the United States on June 6, 2026
Z
Verified Purchase
Zeba
Charlottesville, US
★★★★★ 3
Great Quality, But Not for Me (Too Heavy & Hot)
Size: Queen (Pack of 2)
I want to start by saying there is absolutely nothing wrong with this pillow—it’s well made, good quality, and exactly as described. The adjustable shredded memory foam design and cooling features will likely work well for many people. That said, it just wasn’t a good fit for me personally. Right away, I noticed that the shredded memory foam pieces are fairly large and dense, which made the pillow feel heavier than I expected. When I laid on it, it didn’t have the light, airy “cloud” feeling I prefer. Instead, it felt more solid and structured. I also found it retained heat. Even though it’s advertised as cooling, memory foam tends to hold warmth, and I could feel that fairly quickly. For someone sensitive to heat, this may be uncomfortable. If you prefer a more supportive, denser pillow, this could be a good option. But if you’re looking for something lightweight and breathable, this may not be the best choice. Overall, it’s a quality product—just not the right match for my comfort preferences.
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Reviewed in the United States on April 25, 2026

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