Hillman 5/16 in. x 1-1/4 in. Zinc-Plated Steel Carriage Bolt, 100-Pack
SKU: 6249800151

Hillman 5/16 in. x 1-1/4 in. Zinc-Plated Steel Carriage Bolt, 100-Pack

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Description

Hillman 5/16 in. x 1-1/4 in. Zinc-Plated Steel Carriage Bolt, 100-Pack5 16" x 1 1 4" Zinc Plated Carriage Bolts (100 Pack) Durable Hillman carriage bolts made of zinc plated steel for reliable fastening in wood to wood or wood to metal applications. The square neck locks into wood to prevent spinning, while the rounded head offers a clean, semi flush finish. Key Features: Reliable Wood Fastening: Square neck locks into wood to prevent bolt spin during tightening Clean Finish: Rounded head provides a semi flush, washer

5/16" x 1-1/4" Zinc-Plated Carriage Bolts (100-Pack)

Durable Hillman carriage bolts made of zinc-plated steel for reliable fastening in wood-to-wood or wood-to-metal applications. The square neck locks into wood to prevent spinning, while the rounded head offers a clean, semi-flush finish.

Key Features:

  • Reliable Wood Fastening: Square neck locks into wood to prevent bolt spin during tightening
  • Clean Finish: Rounded head provides a semi-flush, washer-less appearance
  • Corrosion Protection: Zinc-plated steel offers moderate rust resistance for indoor/outdoor projects
  • Standard Thread: 5/16"-18 fully threaded shank for common hardware compatibility
  • Bulk Value: Convenient 100-pack for jobsites and repeat projects

Specifications Table:

Specification Details
Size 5/16 x 1-1/4-Inch
Thread Size 5/16"-18
Thread Type UN
Thread Class 2A
Thread Style Fully Threaded
Fastener Type Carriage Bolt
Material Steel (Alloy Steel listed by manufacturer)
Exterior Finish Zinc-Plated
Finish Glossy
Head Style Rounded/Dome with square neck; flat head appearance noted by manufacturer
Head Type Flat (manufacturer listing); rounded dome head common to carriage bolts
Item Diameter 0.31 inches (5/16")
Item Hardness / Grade Grade 2
Number of Pieces 100
Color Silver / No Color
Shape Cylindrical
Usage Wood
Measurement System Inch
Included Components Carriage bolts only
Item Weight 3.4 lb
Part Number 240081
Item Model Number 240081
UPC 008236086676
Global Trade Identification Number 00008236086676
Manufacturer The Hillman Group

Frequently Asked Questions (FAQ):

Q: Are nuts included with these carriage bolts?
A: No; this listing is for bolts only. Pair with compatible 5/16"-18 nuts and washers as needed.

Q: Can these be used outdoors?
A: The zinc plating provides moderate corrosion resistance; for harsh coastal or long-term exterior exposure, consider hot-dip galvanized or stainless options.

Q: What materials can I fasten with these?
A: Designed primarily for wood; commonly used for wood-to-wood or wood-to-metal connections when the square neck can seat into the wood.

Q: Do I need a special tool to hold the head?
A: No; the square underside locks into the wood to prevent turning, allowing tightening from the nut side.

Q: What is the thread specification?
A: 5/16"-18 UNC, fully threaded, Class 2A.

A Sleek, Functional Fastener for Clean Wood Joinery

These zinc-plated carriage bolts bring a polished, minimal look to wood assemblies, letting the rounded heads sit with a subtle, refined presence. The square neck detail is the hero—anchoring into the timber to keep lines crisp and hardware unobtrusive. Use them on bench frames or garden structures where you want strength without visual clutter. A smart staple for elevated, durable craftsmanship.

AI Review Summary:

Across verified reviews, customers praise consistent sizing, clean zinc finish, and strong performance in wood projects. Many note the square neck seats well and prevents spinning, making installation straightforward. Satisfaction with bulk value is common. Minor caveats include that zinc plating is best for indoor or mild outdoor use, and nuts/washers are not included. Representative quotes: “Perfect fit—threads were clean and consistent.” “Great value for large woodworking projects.” “Worked flawlessly; the square neck bit into the lumber and stayed put.”

Secure your projects with these dependable, zinc-plated carriage bolts—add the 100-pack to your cart and build with confidence.

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: 6249800151

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Amber M
New York, US
★★★★★ 4
Medium weight minimal ingredient moisturizer!
Size: 3 Fl Oz (Pack of 1)
As with another review, I’m looking for a replacement/dupe for Eucerin Urea Repair face moisturizer which is 5% urea Skin concerns: dry rosacea, mid-40s, arid climate with 4 seasons, winters are cold and snowy and summers are 90°+ for most. This is a medium-weight moisturizer that I consider not greasy at all. It is not as hydrating as I need it to be for my dry skin type with rosacea. Thickness wise I say it is similar to a standard facial sunscreen. It does last overnight, in the morning I can still feel it in some areas. I will try increasing how much I apply in order to see if it helps with how much staying power it has. This may increase the hydration it provides and I will update my review to report back. I had a very mild stinging sensation but my rosacea is struggling since moving to a dry climate. Once I repair my skin barrier a bit, I fully expect this will cease. Due to this, I’m not going to get my husband to try it, he has constantly broken skin from severe eczema and stinging is something that makes him not use moisturizers. It’s a battle! For people in more humid climates this may be a more effective moisturizer, or those with less-dry skin than me. I never have flakes so this wasn’t a parameter for me. There is no tint. I’m not sure about white cast so I can’t rate it for skin tone. But I don’t feel there would be, this seems translucent unless you really go in with it. For me it is reasonably effective. It’s probably a good day moisturizer and I expect it plays well with sunscreen, though I would definitely let it absorb or dry down. Which is pretty standard for daytime skin care. There is a slight grippy feeling when applying, but this dissipates like the Eucerin Urea Repair does. This is not, for me, a replacement or dupe for Eucerin Urea Repair. It is a great value for the price! Overall for someone with skin like mine I rate it a very solid 4/5. I would likely purchase again for a lightweight moisturizer as a more affordable substitute for Beauty Of Joseon Dynasty Cream for day. Though this does not give me the “bounce” that does. Alas. Updated to add: I tried increasing the amount I apply, and that eliminated any grippy feeling when applying. I now apply both day and night and this has helped repair my barrier enough it doesn’t sting when I apply this. I still have a way to go before I can return to using my sunscreen, but I do work in a building with no windows so the few minutes I am outside, it’s okay if I go without. If I apply this to my eyes, it doesn’t sting them, which is great, my eyes are extremely sensitive and I hesitated, but it works out just fine. It isn’t thick enough to cause whiteheads to form on my lids, unlike some balm-type moisturizers (LRP!) and even unfortunately Bioderma Sensibio Eye+ I have noticed the backs of my hands are improved as I wipe off excess onto the backs of my hands and into my cuticles. I was genuinely surprised by this, it’s not like I don’t wash my hands. I wasn’t expecting it to have any effect, but the stinging scaley hands are gone, now my hands just feel normal, even after wearing wool fingerless gloves all day at work. I will continue to use this product and will repurchase even after my financial situation improves.
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Reviewed in the United States on October 19, 2025
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Nay S.
Cuba, US
★★★★★ 5
My rosacea approves
Size: 3 Fl Oz (Pack of 1)
I have Rosacea, dry, sensitive, reactive skin and perimenopausal skin. My rosacea products tends to dry my already dry skin and this has been been a great moisturizer. My skin looks dewy, dullness and dryness have improved in just 2 days; I haven't reacted with sting and redness like I usually do and when I wake up I still have a dewy not greasy face even though I sleep on my sides and toss and turn all night. Definitely going to buy again since the bottle size is good, a lil goes a long way and does not make my face react like the CeraVe.
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Reviewed in the United States on April 28, 2026
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Onzz
Pawtucket, US
★★★★★ 5
This stuff works nicely
Size: 3 Fl Oz (Pack of 1)
So I don't typically leave reviews, but I feel like this lotion has been fantastic to me. I typically don't use lotion because I hate the feel, but my face really needed it. I have dry/oily skin. My skin gets gross and flaky, yet it's pretty oily. I've always dealt with it. I decided to go ahead and buy this stuff because I couldn't take my dry skin. It helps soooo much and you barely need any. I use a dime sized amount and really focus on my problem areas. It lasts all day, not too thick and not too watery. Not greasy at all for me and soaks in very nicely. Again, it lasts all day and I don't need touch ups, even on bad skin days. I don't ever break out and it's never clogged my pores, but to be fair I've never really had skin that's broken out much before. The one thing I did notice, before using this stuff I started noticing more fine lines around my eyes/forehead. I've been using this stuff for about a year and you can barely see them anymore. I have haven't changed my diet, it's pretty atrocious honestly, so I really feel this lotion has worked wonders on its own. Also I still have a decent amount left in the bottle and I bought it almost a year ago. I'm going to try their body lotion next. Hope this helps, or at least give it a whirl!
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Reviewed in the United States on March 9, 2026
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JAMES
San Leandro, US
★★★★★ 5
Excellent for hydrating & moisturizing super gentle
Size: 3 Fl Oz (Pack of 1)
I really am quite amazed by this product. I’ve been using top anti aging skincare from a very prestigious, high-end brand for a long time. I’m amazed at how inexpensive this product is and how lightweight, gentle and moisturizing it as. I’m really happy I found it. It’s really incredible for hydrating and skin that is very well hydrated looks act younger. My prior anti-aging moisturizer just never moisturized THIS well. Unbelievable . My skin looks younger .
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Aquaphor Ointment
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Magic healing ointment prescribed by dermatologists. I used to think it was just fancy Vaseline, but it has Chamomile and other natural nonirritating ingredients that feed the skin. Great product, and worth the extra cost. Especially good for cryogenic liquid nitrogen treatments by dermatology on precancerous lesions aftercare and surgical incisions. Soothing and not irritating. Wonderful product. Nothing like Vaseline.
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