SKU: 81817040520

Hillman 3/8 in. Diameter x 2-1/2 in. Length Zinc-Plated Steel Hex Bolt, 50-Pack

Sale price$21.59 Regular price$23.99
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Description

Hillman 3/8 in. Diameter x 2-1/2 in. Length Zinc-Plated Steel Hex Bolt, 50-PackHillman 3 8 in x 2 1 2 in Zinc Plated Hex Bolt (50 Pack) Durable Grade 5 steel hex bolts with a zinc plated finish for corrosion resistance. Coarse 3 8 in 16 threads and a partially threaded shank deliver strong holding power for general construction and repair. Key Features: Corrosion Resistant Zinc Plating: Protects against rust for long lasting performance Strong Grade 5 Steel: Reliable strength for most general purpose fastening Partially Threaded

Hillman 3/8-in x 2-1/2-in Zinc-Plated Hex Bolt (50-Pack)

Durable Grade 5 steel hex bolts with a zinc-plated finish for corrosion resistance. Coarse 3/8-in-16 threads and a partially threaded shank deliver strong holding power for general construction and repair.


Key Features:

  • Corrosion-Resistant Zinc Plating: Protects against rust for long-lasting performance
  • Strong Grade 5 Steel: Reliable strength for most general-purpose fastening
  • Partially Threaded Shank: Enhances grip and reduces shear movement between materials
  • Hex Cap Head: Allows higher torque for secure installation
  • SAE Coarse Threads: 3/8-in diameter with 16 TPI for compatibility with standard nuts and washers

Specifications Table:

Specification Details
Finish Zinc-plated
Manufacturer Color/Finish Silver
Bolt Diameter 3/8 in
Length 2-1/2 in
Bolt Thread Pitch 16 (3/8-16)
Full Thread No (partially threaded)
Grade 5
Head Type Hex cap
Material Steel
Measure Type Standard (SAE)
Thread Type Coarse
Package Quantity 50
Unit of Measure Count

Frequently Asked Questions (FAQ):

Q: Are these bolts fully threaded?
A: No. They have a partially threaded shank for added strength.


Q: What thread type and pitch do they use?
A: Coarse SAE threads, 3/8-in diameter with 16 threads per inch (3/8-16).


Q: What grade are the bolts?
A: Grade 5 steel, suitable for general-purpose fastening when paired with matching nuts and washers.


Q: Do I need to pre-drill?
A: Yes. Drill a hole matching the bolt diameter (3/8 in) for proper installation.


Q: Is the finish suitable for outdoor use?
A: The zinc-plated finish offers basic corrosion resistance; for harsh environments, consider specialized coatings.


Polished Utility with Industrial Poise

This zinc-plated hex bolt brings a crisp, silvery accent to exposed hardware moments, marrying function with a streamlined aesthetic. The hex cap head and clean threading offer a refined, utilitarian detail that pairs beautifully with raw woods and matte blacks. Use them on custom shelving brackets or modern furniture joints to spotlight craftsmanship. A small but essential touch that elevates everyday builds into tailored, luxurious projects.


Outfit your next project with these durable Grade 5 hex bolts and enjoy secure, corrosion-resistant fastening you can trust.

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: 81817040520

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Mark Campbell
Dallas, US
★★★★★ 4
Nice scale
Color: Black
Works as expected, nice size. Makes a big difference when adjusting espresso extraction. I haven't used the timer. One improvement for my use would be to move the power switch from the back to the front, on the side or on the control panel.
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Reviewed in the United States on May 5, 2026
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Jerry McCamman
Alexandria, US
★★★★★ 5
accurate scale
Color: Black
great product
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Reviewed in the United States on June 1, 2026
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Peter Merritt
Waukegan, US
★★★★★ 5
Best Mid Priced Scale on the Market!
Color: Black, Color: Black
Hand down the best prices scale for the price. Excellent ability to precisely dial in pour overs. I’ve been waiting a long time for a scale like this to hit this price point.
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Reviewed in the United States on May 16, 2026
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amazon user
Bozeman, US
★★★★★ 5
Good
Color: Black
This food scale is accurate, easy to use, and very helpful for cooking and baking.
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Reviewed in the United States on May 13, 2026
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Verified Purchase
Anthony Hope
Lexington, US
★★★★★ 5
Simply delightful espresso machine
Color: A-Silver, Style: Button
I am not one to write reviews very often, and I am not a coffee snob obsessing over everything to do with the perfect espresso shot. I do have lots to say about this machine though. My previous Mr Coffee Cafe Barista machine died after many years and I wanted something that would allow me to steam my own milk instead of it being done for me. I also didn’t want to spend more than $150 either as my circumstances are not great right now… Anyway, after reading many reviews on similar machines, I settled on this beaut. I am more than happy with my purchase! The machine is small and takes up half the space my old machine did, which earns high spousal approval. The all stainless steel body looks good and durable and wipes down easily. It looks good on the countertop. It heats up fast for a thermoblock design, and while the water capacity in the tank isn’t the greatest, a full tank is enough to pull two espresso shots, steam two jugs of milk, plus allows for preheating the group head and portafilter and flushing everything afterwards. The machine pulls a pretty decent shot with pre-ground espresso and leaves a hard puck after extraction, something I always had issues with on my old machine which would always leave a soupy mess. I do weigh my dose (13 grams), use a WDT needle tool, distributor, tamper and puck screen. While I do not have control over everything, you can set the volume of water dispensed for each of the buttons on the panel. The single shot button is set at 30 milliliters. I can’t get a full 15 grams into the portafilter for a true 1:2 ratio but it’s close enough. The milk frother is fast and steams the milk in about a minute and actually produces some good results. The wand seems durable and the rubber grip is well placed so you don’t scald your fingers. This does a great job for frothy cappuccinos or silky lattes. The pump is not loud either which is good for a machine at this price point. Please follow the instructions to prep the machine when you first set it up. Run a few shots through the machine before you start using it to remove any trace particles in the water lines and pump. And plastic smell from the water tank will be removed by doing this. For a basic espresso machine, this is a good buy. It seems to be well made, and it suits my present financial circumstances. Sure, I wouldn’t mind a more mainstream brand and probably a better quality machine, but for the money, don’t hesitate in buying this machine. I got mine for $129 in early 2025 and I’ve seen this at $99 before over the holidays. It’s a simply delightful espresso machine that I’m glad to have.
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Reviewed in the United States on January 18, 2025

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