SKU: 90201084564

Hillman 3/8 in. Diameter x 4 in. Length Zinc-Plated Steel Hex Tap Bolts, Coarse Thread, 50-Pack

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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Hillman 3/8 in. Diameter x 4 in. Length Zinc-Plated Steel Hex Tap Bolts, Coarse Thread, 50-PackHillman 3 8 in. x 4 in. Zinc Plated Hex Tap Bolts (50 Pack) These Hillman hex tap bolts feature a fully threaded shank for secure fastening in wood to wood, wood to metal, or metal to metal applications. Made from Grade 2 steel with a zinc plated finish, they offer dependable strength and moderate corrosion resistance for everyday projects. Key Features: Fully Threaded Security: Hex tap bolts feature a fully threaded shank to minimize shear movement

Hillman 3/8 in. x 4 in. Zinc-Plated Hex Tap Bolts (50-Pack)

These Hillman hex tap bolts feature a fully threaded shank for secure fastening in wood-to-wood, wood-to-metal, or metal-to-metal applications. Made from Grade 2 steel with a zinc-plated finish, they offer dependable strength and moderate corrosion resistance for everyday projects.


Key Features:

  • Fully Threaded Security: Hex tap bolts feature a fully threaded shank to minimize shear movement and hold materials firmly
  • Durable Grade 2 Steel: Balanced strength for general-purpose fastening; pair with matching Grade 2 nuts and washers
  • Corrosion-Resistant Finish: Zinc plating provides moderate rust protection for indoor and sheltered outdoor use
  • Coarse Thread Design: Easier starts and strong grip in common building materials
  • Bulk Value Pack: 50-count box of 3/8 in. diameter x 4 in. length bolts for project efficiency

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 4 inch
Material Steel
Finish Zinc Plated
Grade Grade 2
Thread Type Coarse
Head Style Hex
Shank Fully threaded
Application Wood-to-wood, wood-to-metal, metal-to-metal fastening
Pieces 50 pack
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: Are nuts and washers included?
A: No. Purchase matching Grade 2 nuts and washers separately for best results.


Q: Do I need to pre-drill?
A: Yes. Pre-drill a hole that matches the 3/8 in. bolt diameter for easier installation and proper fit.


Q: Can these be used outdoors?
A: The zinc-plated finish offers moderate corrosion resistance; for harsh outdoor environments, consider stainless or hot-dipped galvanized hardware.


Q: What thread type do these bolts have?
A: They are coarse thread, fully threaded along the shank.


Q: What materials are these suitable for?
A: Designed for wood-to-wood, wood-to-metal, and metal-to-metal fastening tasks.


Industrial Poise in a Polished Zinc Finish

There’s a quiet confidence to these hex tap bolts—the crisp facets of the head and the clean zinc sheen bring order and intention to utilitarian details. I love how the fully threaded profile delivers both function and a refined, rhythmic texture. Use them to punctuate exposed shelving or metalwork where hardware becomes part of the composition. They’re the small, purposeful accents that make everyday construction feel elegantly resolved.


Equip your next project with dependable, zinc-plated strength—add this 50-pack of Hillman hex tap bolts 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: 90201084564

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Ian
Port Orchard, US
★★★★★ 5
Huge Upgrade to my trusty V1 Robot
We've had one of the first model robot vacuums from the og manufacturer which has been a workhorse for us for years! It's the drunk uncle of robots though, no bells and whistles, just your basic robot that runs into everything but gets the job done in some random chaotic pattern. Seeing this on sale and finally just going for it to see how good newer models have gotten (no more separate virtual wall lazers, a nice easy to use app, no more bumping around clumsily!, and more). Well, long story short, they have gotten soooo much better and I'm incredibly glad I gave this one a try. It's is running flawlessly, cleans very well, i love the ease of the app and setting up no-go zones, and pretty much everything else has been an upgrade. Looking forward to many years of our new bot and a cleaner, less noisy, less drunk uncle of a bot around the house. (Don't worry, drunk uncle is still getting his time in down in the basement. He's old reliable at this point and will go as long as he wants to.) This is a great vac that performs wonderfully with all the functions and conveniences I need (i haven't tried the mopping function yet but didn't really buy it for that) at an incredible price point, esp when on sale. If you're looking to upgrade like I did, it's well worth it. If you're looking at your first robot and are unsure if it's something you really need.... trust me, get it. It will save you time, knock one thing off your million item to-do list, and will soon become something you are unsure why it took so long to try.
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Reviewed in the United States on April 26, 2025
C
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Charity F.
Carnegie, US
★★★★★ 2
Updated Review: error code and quit working after only 3 weeks.
Update! I absolutely loved this vacuum.....for about 3 weeks. I ran it every day. I loved loved loved the mapping feature that allowed me to select which rooms of my house I wanted it to clean. It did a pretty good job and I was so happy with it. I took good care of it and cleaned the filter and emptied it often. It was great ...until it didn't work anymore. Fan error: error 155 called for me to factory reset the vacuum which I did 3 times but it still wouldn't go more than about 30 seconds before stopping and giving me the internal error code again. After researching the code (because the website and help book on the app don't list this code in their troubleshooting guide) apparently this is a common thing for this particular model (the Q5 pro) to do. And most of the time it isn't fixable. We were still within the time frame to return it through Amazon so we decided to do that rather than contact customer service in hopes that they might fix it but not and then not be able to return it anymore. Sadly I won't be buying this brand again for a while. My previous vacuum (roomba) lasted me 5 years and still works, just has old technology. I was really hoping for another vacuum with newer technology like house mapping to last me a long time as well. I most likely will be returning to the Roomba brand. Which is sad because this seemed like a great vacuum with great features for a good price. I hope roborock improves their models and fixes these error issues and maybe one day I'll give them a try again. Maybe. Original review: I love this vacuum. I had another brand that was 5 year old technology and just caused more headache than help. This one is a huge improvement. I love how it initially mapped out my house and I was able to divide and name the rooms in the app. Now I can tell it to clean only certain rooms or the whole house and it does great and doing only the rooms I want it to do. I connected it to my Google speaker as well and now I can tell google to make my roborock clean my kitchen. I can also control it and monitor it from the app even when I'm not home. The mop feature isn't great. It really doesn't clean, more just puts water on the floor and leaves dirty streaks. But I didn't buy it for the mop function. If it does a great job vacuuming, which it does, I'm happy with it.
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Reviewed in the United States on January 6, 2025
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Grantham, US
★★★★★ 5
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Our robot vacuum is called Mildred and she works fine.
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Reviewed in the United States on April 16, 2026
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Andrea Dennise Midder Panford
Whiting, US
★★★★★ 5
Lazy girl’s best friend!
Color: K5b-white
Perfect. Picks up perfectly including dog hair. Perfect for a “lazy” person like myself . Well recommended! Very easy on the pockets!
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Reviewed in the United States on May 12, 2026
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josalyn claire
Phoenix, US
★★★★★ 5
Amazing!!!
Color: White
I purchased the OKP Life robot vacuum in 2024, and as of 2026, it continues to perform exceptionally well. It has proven to be a highly reliable product, exceeding my expectations in terms of durability and long-term performance. This device has significantly simplified my cleaning routine and saved me a considerable amount of time. Its suction power is sufficient to effectively remove dust, crumbs, and pet hair without difficulty. Additionally, it navigates around furniture efficiently and rarely becomes obstructed. Another notable advantage is its relatively quiet operation compared to traditional vacuum cleaners, allowing it to be used at any time without causing disruption. It is also very user-friendly and maintains a consistently clean environment with minimal effort. Overall, I highly recommend this vacuum. It is dependable, well-constructed, and represents excellent value for its performance.
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Reviewed in the United States on May 31, 2026

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