SKU: 2107990905

Hillman 3/8 in. Dia x 4 in. L Heat-Treated Zinc Steel Hex Head Cap Screw (50-Pack)

Sale price$43.19 Regular price$47.99
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Hillman 3/8 in. Dia x 4 in. L Heat-Treated Zinc Steel Hex Head Cap Screw (50-Pack)Hillman 3 8 in. x 4 in. Zinc Hex Head Cap Screws, 50 Pack Heavy duty Hillman hex head cap screws made of heat treated zinc plated steel for durable fastening. Sized 3 8 in. diameter by 4 in. length with coarse 3 8 16 machine threads, ideal for use with a nut or tapped hole in general construction and repair. Key Features: Durable Construction: Heat treated zinc plated steel resists wear and corrosion High Torque Capability: Hex cap head with machine

Hillman 3/8 in. x 4 in. Zinc Hex Head Cap Screws, 50-Pack

Heavy-duty Hillman hex head cap screws made of heat-treated zinc-plated steel for durable fastening. Sized 3/8 in. diameter by 4 in. length with coarse 3/8-16 machine threads, ideal for use with a nut or tapped hole in general construction and repair.


Key Features:

  • Durable Construction: Heat-treated zinc-plated steel resists wear and corrosion
  • High Torque Capability: Hex cap head with machine threads for strong clamping force
  • General Purpose Use: Grade 5 strength suits a wide range of projects
  • Coarse Thread: 3/8-16 thread for reliable hold in tapped holes or with nuts
  • Bulk Value: Convenient 50-pack for jobsite or shop replenishment

Specifications Table:

Specification Details
Diameter 3/8 in.
Length 4 in.
Thread Size 3/8-16
Thread Type Coarse
Head Type Hex Cap
Material Steel
Finish Zinc
Grade 5
Heat Treated Yes
Pack Quantity 50 count
Nuts Included No
Tightening Method Wrench or drill driver
Category Hex Bolt
Weight 27.26 lb
Package Dimensions 11 in L x 5.85 in W x 9.4 in H

Frequently Asked Questions (FAQ):

Q: Are nuts included?
A: No, nuts are not included and must be purchased separately.


Q: What wrench size is needed?
A: Tighten with a standard wrench or driver sized for a 3/8 in. hex cap screw head.


Q: What is the thread specification?
A: Coarse 3/8-16 machine threads.


Q: What grade are these bolts?
A: Grade 5 for balanced strength and workability.


Q: Where should these be used?
A: Suitable for general fastening into tapped holes or with matching nuts in construction, automotive, and maintenance applications.


Industrial Polish, Purposeful Strength

These zinc-kissed cap screws bring a subtle, silvery sheen that pairs beautifully with raw woods and painted steel. The crisp hex head reads precise and intentional—an elevated detail on open-shelf brackets or custom hardware. Style them with matte black fittings for contrast, or echo their finish with brushed nickel accents. A small component with big impact, they anchor designs with quiet, functional luxury.


Outfit your next project with reliable, Grade 5 strength—add this 50-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: 2107990905

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L.R.
Los Angeles, US
★★★★★ 5
Great summer sheets
Color: Light Blue, Size: Queen, Color: Light Blue, Size: Queen
Love these sheets! I washed them before using. Went by the manufacturer's instructions and they came out beautifully. I purchased these for my summer sheets, and they are very soft and comfortable and really keeps me cool at night. I purchased the light blue, but they are more like aqua green. Not saying I don't like them, the color is very pretty. But if you are looking for light blue, they are not quite that. Are there wrinkles? Yes, of course. They're 100% cotton. Did it interfere with my sleep? Nope. Not at all.
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Reviewed in the United States on May 18, 2026
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Victoria
Bozeman, US
★★★★★ 4
100% cotton
Color: Dark Gray, Size: King
I have a king size hybrid Purple mattress, and while the fitted sheet pockets don’t exactly fit all the way to the bottom, they didn’t really have issues with riding up much. I just pull them back down when making the bed, and it’s not really an issue. They are a little crunchy at first, but I think they soften with washes. I appreciate that they are 100 percent cotton which was my reason for purchasing. For the price, I am satisfied, and will probably purchase more if I can’t find anything comparable with deeper pockets. I would consider them to be a good mid weight, breathable sheet set, making them nice year round sheets. I haven’t had any pilling issues yet, I will continue to use to be sure this doesn’t become a problem before I purchase another set. The gray color is very pretty and neutral, making it match with many other color schemes. As of now, if the pockets were just a little deeper, I’d give 5 stars.
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Reviewed in the United States on January 2, 2026
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Kai
Grantham, US
★★★★★ 5
Great Buy
Color: Sage Green, Size: California King
Pros: correct color as shown, lightweight, breathable at night, great for sensitive skin, fits corners of bed Cons: after 2-3 washes, even following wash instructions the sheet does get smaller making it harder to fit bed. Overall 10/10, would recommend buying & I will buy in future.
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Reviewed in the United States on June 2, 2026
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Julie
Lexington, US
★★★★★ 3
Scratchy, not soft, smell really bad at first, don't look great.
Color: Good Vibes, Size: King
Out of the bag these smelled really toxic. I pulled some loose threads, of which there were many, and did a burn test. The stitching threads are synthetic. Then I pulled a fabric thread, this burned natural. After washing, the smell was gone. These fit the bed ok. They are, I dare say scratchy. I hope they soften with washes. They look old immediately after wash.
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Reviewed in the United States on May 14, 2026
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MsMellybelle
Dallas, US
★★★★★ 5
Perfect for my little hideaway
Color: Wesley Taupe, Size: Twin, Color: Wesley Taupe, Size: Twin
We converted an old small treehouse into a cozy nook for adults and kids alike. I ordered this sheet set for the twin mattress because the color and vibe match the decor. They're lovely and did exactly what I wanted for the space. They're soft and a perfect thickness for the warmer months. It gets hot up there in summer. The mattress is 5" memory foam, so these have a little extra "give" for my mattress and should fit a standard mattress just fine. Very cozy. They're only printed on one side, which is common for most patterned sheets. They're soft out of the bag and breathable. The fitted sheet has elastic all the way around, so they seem to stay on so far. Nice sheets!
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Reviewed in the United States on April 1, 2026

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