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Description
Hillman 5/16 in. Diameter x 5 in. Length Zinc-Plated Steel Hex Bolt, Coarse Thread, 50-PackHillman 5 16 x 5 in. Zinc Plated Steel Hex Bolts (50 Pack) These Grade 2 Hillman hex bolts feature a zinc plated steel construction for durable, corrosion resistant fastening in wood, metal, and composite projects. The partially threaded shank delivers a stronger grip and reduced shear movement, ideal for general purpose applications. Key Features: General Purpose Fastening: Grade 2 zinc plated steel for reliable strength and everyday use Corrosion
Hillman 5/16 x 5 in. Zinc-Plated Steel Hex Bolts (50-Pack)
These Grade 2 Hillman hex bolts feature a zinc-plated steel construction for durable, corrosion-resistant fastening in wood, metal, and composite projects. The partially threaded shank delivers a stronger grip and reduced shear movement, ideal for general-purpose applications.
Key Features:
- General-Purpose Fastening: Grade 2 zinc-plated steel for reliable strength and everyday use
- Corrosion Resistance: Zinc finish helps protect against rust in typical environments
- Stronger Hold: Partially threaded shank minimizes shear movement between materials
- Coarse Thread: Compatible with standard coarse nuts and washers for easy assembly
- Bulk Pack Value: 50-pack for efficient stocking and project readiness
Specifications Table:
| Specification | Details |
|---|---|
| Diameter | 5/16 inch |
| Length | 5 inch |
| Material | Steel |
| Finish | Zinc Plated |
| Grade | Grade 2 |
| Thread Type | Coarse |
| Head Type | Hex |
| Number in Package | 50 |
| Packaging Type | Boxed |
| Recommended Use | Wood-to-wood, wood-to-metal, metal-to-metal fastening |
| Shank | Partially threaded |
| Unit of Measurement | Listed as Metric (site); dimensions provided in inches |
| Package Dimensions | 6.8 in L x 4.5 in W x 3.3 in H |
| Package Weight | 6.2 lbs |
Frequently Asked Questions (FAQ):
Q: Are these bolts fully or partially threaded?
A: They have a partially threaded shank for improved grip and reduced shear movement.
Q: What materials are suitable for these bolts?
A: Designed for wood-to-wood, wood-to-metal, and metal-to-metal applications.
Q: Do I need matching hardware?
A: Use washers and nuts that match the same grade and finish—coarse thread Grade 2 with zinc plating.
Q: Will the zinc plating prevent rust outdoors?
A: Zinc plating offers corrosion resistance for typical use; for harsh outdoor or marine environments, consider stainless steel.
Q: What drill preparation is recommended?
A: Pre-drill holes to the appropriate size for easier installation and proper alignment.
A Clean, Industrial Essential
The crisp geometry of a hex bolt introduces a subtle, utilitarian polish to custom builds and furniture upgrades. Its zinc sheen reads modern while quietly supporting the composition. Pair with matte black brackets for contrast or layer with warm woods to balance the industrial note. It’s a small detail that elevates the craft of luxurious, everyday living.
Equip your next project with these durable zinc-plated hex bolts and enjoy reliable, fuss-free fastening in bulk.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 2330 reviews
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Product Reviews
★★★★★ 5
Robust pipe & fittings with a beautiful, smooth black finish
Size: side table leg
This set of pipe & fittings for use as low table legs is heavy duty and aesthetically pleasing. Especially when the pieces are handled, the tactile sensation is much nicer than with plumbing steel pipe because this product is beautifully finished smooth. The black pipes are quite smooth as well as the fittings.
The pieces are all also pretty robust, though the wall thicknesses are less than in pipe for pressurized water systems. Of course that makes sense as this product does not need to hold fluid pressure.
In my view they got the heaviness factor of this product just right; it's not as heavy or robust as black pipe used in natural gas supplies, but still robust and pretty heavy. Assembled, this product is absolutely stiff and unyielding for a solid table that could hold a man's weight easily.
The feet utilize a brilliant scheme so that each foot can be independently adjusted for an uneven floor. Thus a level table on an uneven floor is easily accomplished. The feet simply extend the effective leg length by screwing counter-clockwise. To prevent any shifting at the threads adding some pipe compound or teflon tape may be advised. Even masking or duct tape might work as the idea is to just fill any gaps where male threads meet female threads.
The four flanges at the tops of the legs provide a wide, solid surface for attaching the table top, with either hidden screws underneath or you could through-bolt a glass table top (provided you have the skill to drill glass!). I think this product would look great with a glass top.
Assembly is quick and easy. The hardest part is drilling holes underneath the table top to accept screws. No pipe wrenches are needed as the pieces screw together by hand to an adequate tightness. If any doubt whether they are tightened enough have a strong person with grippy gloves finish. The "X" in the center attaches to the legs with a very clever machine screw system tightened with the included hex wrench. This is presumably because if tightened simply by screwing the fittings, the point of snugness would not likely be where the "T" fittings are exactly vertical. The maker has solved this problem so that you are assured that all legs will be in the perfect vertical position once everything is tight. The setup is also nice and rigid once tightened. This is a huge benefit of steel pipe projects; they are really solid.
The black finish is clearly very durable, like a powder coat. It appears that it will provide excellent protection against rust. Coverage is complete; I found no dings or scratches anywhere on any piece.
Overall this is a very well-designed product for function and aesthetics. Perfect for a beautifully renovated warehouse condo where an industrial vibe is desired in a rock-solid table that won't shift around. The smoothness of the pipe is top notch. I've used lots of pipe in projects, some of it actual water pipe and some decorative pipe such as this. I've never seen better quality decorative pipe as this maker put in the effort to finish it beautifully smooth. At currently $34.99 I find the price quite reasonable too.
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Reviewed in the United States on April 18, 2026
★★★★★ 3
the height is only 16"
Size: coffee table leg
The height is only 16". From the description it appears to be 24" wide and 24" high.
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Reviewed in the United States on April 2, 2026
★★★★★ 4
Good DIY Pipe Legs but Powder Coat Quality Lacks
Size: side table leg, Size: side table leg
These industrial style pipe legs make building a DIY end table easy and the kit saves a trip to the hardware store. The fittings go together normally and assembly is simple. Comes individually wrapped. My main issue is the powder coating looks and feels cheap and rubs off easily. The pipes already had marks from touching each other from unboxing. If you do not mind some wear on the finish over time this is a decent purchase. The metal at the hardware store will be thicker and more durable but will cost more. I’d recommend based on ease of having a kit and it being delivered saving me a trip.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Stable, attractive, and easy to turn into a table with your choice of top
Size: side table leg
The X-shape of the table legs - constructed with solid metal flanges, T-joints, X-joints and 1-inch diameter pipes - provides a strong and sturdy base for a wood top. The legs have adjustable feet pads to prevent scratches and ensure stability. Assembly of the legs is relatively simple (the instructions are clear) but you will need your own tools to attach a top.
The industrial design is especially well suited to rec room or finished basement use. I am adding a 28" diameter raw edge slab of wood from a recently felled tree as the top and it is very attractive. (Photo unavailable because after I made certain it would work I sent the slab out for drying and finishing.)
If you want a custom table and have a particular piece of wood you want to use, these legs are an excellent choice.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Very nice kit: Beware it is NOT heavy duty plumbing pipe though!
Size: side table leg
I want to give this kit a high rating, but I need to address the "truth in advertising" bit since there may be an important disconnect between what you think you are getting and what actually comes in the box.
Black plumbing used for shelving or table legs is part of an important niche in interior design. I like the industrial loft look myself and have a variety of glass, steel, and masonry elements in my home. This kit fits that look and provides plenty of "strength" for most domestic uses, like shelves or coffee tables. But they are NOT "industrial pipe" or "maximum durability pipe." Note the phrase "cast iron finish feet," which together with the other claims might lead you to think these are cast plumbing fittings. They are NOT!
The feet and flanges feel like electrical conduit fittings, and the pipe sections are likely aluminum. They might be electrical or they might be multi-use, lightweight pipe.
While all this might lead you to think that you're getting a truly retro, heavy-duty pipe kit made of black plumbing pipe, you are not. But, does it matter? Depends. I find the lighter pipe's smooth finish a nice "tone-down" from the rough plumbing look. All together, this kit provides plenty of strength for most furniture and the rustic pipe look, but with a nicer, lighter finish. To me that is a plus--this is a very nice kit and costs less that if you'd pieced it together from real plumbing parts (I priced it out to compare), and looks retro but cleaner. I knew what to expect because while I got this kit free on Vine, I had purchased a nearly identical kit from another seller last year.
So, I'm giving it 5 stars for what it actually is and for the price, JUST BE AWARE THE NARRATIVE IS MISLEADING. Which is unfortunate because just like some people might want the heavier pipe, I'm betting more would be attracted to the look with a cleaner, lighter feel.
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Reviewed in the United States on December 31, 2025
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