Hillman 3/8 in. Diameter x 5-1/2 in. Length Zinc-Plated Steel Hex Bolt, Coarse Thread, 50-Pack
SKU: 49214710627

Hillman 3/8 in. Diameter x 5-1/2 in. Length Zinc-Plated Steel Hex Bolt, Coarse Thread, 50-Pack

Sale price$61.19 Regular price$67.99
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Description

Hillman 3/8 in. Diameter x 5-1/2 in. Length Zinc-Plated Steel Hex Bolt, Coarse Thread, 50-PackHillman 3 8 in. x 5 1 2 in. Zinc Plated Steel Hex Bolts (50 Pack) Durable grade 2 steel hex bolts with a zinc plated finish for corrosion resistance. Designed for fastening wood to wood, wood to metal, or metal to metal with a partially threaded shank for stronger grip and reduced shear. Coarse thread for reliable, general purpose use. Key Features: General Purpose Strength: Grade 2 steel suitable for most everyday fastening tasks Corrosion Resistant

Hillman 3/8 in. x 5-1/2 in. Zinc-Plated Steel Hex Bolts (50-Pack)

Durable grade 2 steel hex bolts with a zinc-plated finish for corrosion resistance. Designed for fastening wood-to-wood, wood-to-metal, or metal-to-metal with a partially threaded shank for stronger grip and reduced shear. Coarse thread for reliable, general-purpose use.


Key Features:

  • General-Purpose Strength: Grade 2 steel suitable for most everyday fastening tasks
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust in typical environments
  • Secure Hold: Partially threaded shank improves grip and minimizes shear movement
  • Coarse Thread: Provides dependable engagement for common applications
  • Bulk Convenience: 50-pack boxed for efficient stocking and projects

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 5-1/2 inch
Material Steel
Finish Zinc Plated
Grade Grade 2
Head Type Hex
Thread Type Coarse
Number in Package 50
Packaging Type Boxed
Intended Use Wood-to-wood, wood-to-metal, or metal-to-metal fastening
Shank Partially threaded
Package Height 3.3 in
Package Width 4.5 in
Package Length 6.8 in
Package Weight 9.4 lbs

Frequently Asked Questions (FAQ):

Q: Are these bolts fully threaded?
A: No. They have a partially threaded shank to improve grip and reduce shear movement.


Q: What grade are these bolts?
A: Grade 2, appropriate for most general-use applications.


Q: Do I need matching hardware?
A: Yes. Use washers and nuts of similar grade and finish for best performance.


Q: Can these be used outdoors?
A: The zinc plating provides typical corrosion resistance; for harsh environments consider higher-grade or galvanized options.


Q: What thread type do these bolts have?
A: Coarse thread.


Sleek Utility with Everyday Confidence

These zinc-plated hex bolts bring a crisp, industrial clarity to functional detailing. The clean hex head and bright finish add a subtle, polished accent to workshop builds and crafted furnishings. Style them with matching washers and nuts for a cohesive hardware story that feels intentional and refined. A modern essential, they deliver durability and poise in equal measure.


Choose this 50-pack of zinc-plated hex bolts for reliable, corrosion-resistant fastening across your next project.

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: 49214710627

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H. T.
Lexington, US
★★★★★ 5
premium feel in the hand.
Can't really say whether it's that good or not elecronics wise since I didn't test it but it works like it's supposed to. Meanwhile, the housing oh man. It's premium. It feels like hard aluminum or something, very nice. Edges are rounded too with just the right sharpness like a macbook. Others would've been plastic. This is really nice for the price and if the specs really are 10Gbps, that's really good because most in this price range is 5Gbps.
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Reviewed in the United States on March 2, 2026
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 1
Failed to support desktop PCs with USB 3.2 Gen 2 ports
Does not work with my HP mini PC with USB 3.2 gen 2 ports - when connecting USB portable SSDs to the hub. You won't believe it, but many USB 3.2 Gen 2 hubs only support laptops not desktop PCs (except hubs that have dedicated power supply for higher power USB devices e.g. SSD/HDDs) when connecting USB portable SSDs to the hub. We need a major fix from many of the USB hub vendors so these products can work with desktop PCs that have USB 3.2 Gen 2 ports. Workaround: Just directly connect the USB portable SSD to the PC instead. If you need more USB ports, pick up a good old USB 3.0 hub. They're working correctly with portable USB SSDs when working with desktop PCs. (You'd need a powered USB hub if you're connecting 2 or more portable SSDs - do your own calculation: 5V - 1A per SSD/HDD).
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Reviewed in the United States on November 2, 2025
E
Verified Purchase
eg 123
Birmingham, US
★★★★★ 5
Perfect for ROG Ally X
Want to hook up a keyboard, mouse, headset, AND external display to a ROG Ally X? This will do it and it only takes up one (USB4) port on the Ally X. Oh, and it will also provide enough power to charge the Ally and still have juice for all the other ports. Update: I’ve now tried a few USB4 hubs because I also want Ethernet which this doesn’t have. Unfortunately I’ve discovered that most of them seem to overheat after awhile and I loose connectivity on some of the ports (for whatever reason it’s always the type A ports on the hubs that fail). After letting them cool down, the other USB hubs work again, but it’s still frustrating. This StarTech hub is the only one that works for hours. It’s a little bulkier than other hubs I’ve tried, but that’s probably because it needs to be that way for proper heat dissipation?? Anyway, I wish it had a few more ports (including Ethernet), but for reliability this thing is the best I’ve found.
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Reviewed in the United States on July 31, 2024
A
Verified Purchase
Alissa
Draper, US
★★★★★ 5
The Best!
This thing is amazing! Worked right out of the box. No drivers to install, no confusion, just plug and go. I'm using this hub to connect a mouse, a keyboard, and a monitor to my 2025 MacBook Air (M4). Before buying this I bought a complicated, powered hub for 2x the price and wasted multiple hours trying to get the $%^&(*& thing to work, which it never did. If you want to run a display and a few peripherals, this Startech hub is the absolute best bang for your buck.
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Reviewed in the United States on December 8, 2025
M
Verified Purchase
Michael Cheng
San Leandro, US
★★★★★ 1
Quality Control Issues
I want to like this dock, I really do. I purchased it with the intention of using it as a hub for my phone + usb-c external display. The pass-through charging never worked on this dock. Tried multiple cords and tested the dock with nothing plugged into any of the USB ports -- all of the power disappears somewhere onto the hub and the actual charge rate on my phone slows to a trickle. With nothing connected, it estimates >24hrs to charge from 30% to full. The plus side is that the usb ports do work, though the usb-c display went from 100% reliability to <50% within a few months of purchase. Extremely frustrating.
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Reviewed in the United States on September 24, 2024

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