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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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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Amazon Customer
Houston, US
★★★★★ 5
A Quality Wallet
Color: Boulder Black - Napa Smooth Black
So far so good. The wallet has a great feel and is of high quality. It looks great and has plenty of credit card slots and I love the bill holder, with a divider. It is wider than I expected, but it stays thinner than the last minimalist wallet I had so the trade off is worth it to me. I would buy it again.
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Reviewed in the United States on April 28, 2026
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T. Shepard
Omaha, US
★★★★★ 5
Classic tooling.
Color: Adventure Brown - Vintage Buffalo Brown
Excellent. Extremely well made. Full grain bullhide. Pretty tooling.
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Reviewed in the United States on May 14, 2026
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A. Menard
Bozeman, US
★★★★★ 5
Good Wallet, Plenty of Storage Slots
I needed a new wallet to replace my old one that was a tri-fold one that was cloth and it was getting some wear holes in it. I really like this wallet but it has one feature I don't care for. The wallet is good size, has plenty of card holding capacity, RFID blocking, soft leather and it's window is large enough to hold two picture ID's, which I have not to mention the price is pretty good. The only feature I don't care for is the two pocket billfold section. I find it restricts how far it opens up which then makes it hard to see the money you're carrying. I would have been better to not have this so it would open farther and just put two horizontal fabric pockets on the front side of the bill section to hold some business cards.
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Reviewed in the United States on April 8, 2026
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Snowman
Charlottesville, US
★★★★★ 5
Best Wallet So Far
It took me years of my wife telling me to get a new wallet (my old one was GREAT but very old, worn and dirty but like an old friend... hard to get ride of). I needed something that would hold A LOT OF CARDS. After much searching on Amazon and reading reviews, I selected this one as I likes the style. Right off the bat I liked it. It held almost all my cards (I discarded 2 or 3 that were old and expired) and am amazed at how thin it is (especially compared to my old wallet) and comfortable in my back pants pocket. I especially like the bi-fold feature that organizes my cards so when I need one, I know exactly where it is. Looks well made and hopefully will last many years.
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Reviewed in the United States on April 29, 2026
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Brand Edit Lab
Grantham, US
★★★★★ 5
Great Quality Men's Wallet
Color: 172-Brown-no zipper, Color: 172-Brown-no zipper
Great packaging. The wallet is very nice quality, soft feel yet strong. There are adequate inserts and pockets to hold cards, cash and even a picture. Gifting this to my husband for father's day.
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