Hillman 5/16 in. Hot-Dipped Galvanized Steel Split Lock Washer, 100-Pack
SKU: 38416156994

Hillman 5/16 in. Hot-Dipped Galvanized Steel Split Lock Washer, 100-Pack

Sale price$10.79 Regular price$11.99
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Description

Hillman 5/16 in. Hot-Dipped Galvanized Steel Split Lock Washer, 100-Pack5 16 in. Galvanized Split Lock Washers (100 Pack) Durable Hillman split lock washers provide a secure hold for bolts and screws in vibration prone or outdoor applications. Made of steel with a hot dipped galvanized finish for superior corrosion resistance, they help prevent fasteners from loosening over time. Key Features: Secure Anti Loosening: Split ends bite into surfaces to help keep nuts and bolts tight under vibration. Outdoor Ready Protection:

5/16 in. Galvanized Split Lock Washers (100-Pack)

Durable Hillman split lock washers provide a secure hold for bolts and screws in vibration-prone or outdoor applications. Made of steel with a hot-dipped galvanized finish for superior corrosion resistance, they help prevent fasteners from loosening over time.


Key Features:

  • Secure Anti-Loosening: Split ends bite into surfaces to help keep nuts and bolts tight under vibration.
  • Outdoor-Ready Protection: Hot-dipped galvanized steel resists rust for long-lasting performance.
  • Consistent Load Distribution: Engineered washer profile supports uniform clamping force.
  • Versatile Pairing: Use with matching 5/16 in. nuts and bolts for best fit.
  • Bulk Value: Convenient 100-pack for projects and jobsite stock.

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Finish Hot-Dipped Galvanized
Material Steel
Number in Package 100
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What size fasteners work with these washers?
A: They are designed for 5/16 inch diameter bolts or screws; pair with matching nuts and bolts.


Q: Can these be used outdoors?
A: Yes. The hot-dipped galvanized finish offers strong corrosion resistance suitable for exterior and treated lumber applications.


Q: Do I need special tools to install?
A: No special tools—simply place the washer beneath the nut and tighten as usual to engage the split locking action.


Q: Are these metric or imperial?
A: They are for 5/16 inch imperial fasteners.


Q: What material are they made from?
A: Steel with a hot-dipped galvanized finish.


Industrial Strength, Effortlessly Refined

This split lock washer brings a quiet confidence to hardware details, marrying rugged steel with a weathered, galvanized sheen. Its crisp split edge is a subtle design moment that ensures a tailored, secure finish to any exposed bolt. Style it in outdoor fixtures or reclaimed wood installations where utility becomes part of the aesthetic. A small but essential piece, it elevates the craft and longevity of every project.


Secure your build with corrosion-resistant, 5/16 in. split lock washers—add this 100-pack 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: 38416156994

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4.9 ★★★★★
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Sea
Phoenix, US
★★★★★ 1
Small
These run very small.
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Reviewed in the United States on December 21, 2025
M
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Momminlike A. Pro
Lexington, US
★★★★★ 5
If you haven't switched to boxer briefs, you're missing out :)
Size: 11 Plus, Color: Microfiber - Colors May Vary
I figured I ought to provide a review, something I'm not prone to doing even though I often/always bank my purchases on item reviews, since I just bought me a second set of these underwear because they're just that good! I bought my 1st set of these 2 months ago because I was on the hunt for some new comfortable underwear and omfort was my main criteria. Wasn't aware that I was dealing with some health issues that was causing a fair bit of internal inflammation, just knew that I had had enough of basically everything I had at the time because they were old, ratty looking and even my all-time favorites had begun feeling too... something... not exactly too tight, yet they just weren't very comfortable anymore either and I didn't need that kind of extra stress in my life. But. I'm a barely-makin-it domestic violence survivor. Sure, I'm super proud to have gotten as far as I have in this world (considering that post-separation psychological terrorism and torture continue to thus day, 5 years after I broke free) but, by rights and family-rearing, I should be living in a whole different world right now... which is my way of saying that money is extra, EXTRA tight in my house...and yet, I still have "caviar tastes", ifykwim. Lol. And, frankly, neither I nor anyone else should have to scrimp on comfortable, classy-feeling, fashionable clothing no matter how small our clothing budget may be. I was spurred to check out boxer briefs for women after reading about a few different women's favorite brands in the comments on soneones IG post (that must have been in regards to underwear, but heck if I can remember the details). So, off I went to scout around on Amazon to see what this "boxer briefs" business was about... desperately hoping that the term was not just a rebranding of those "hipsters" things. I am 46yo, 5'10" (potentially closer to 5'11"... not something I care enough about to know for certain, lol) and, clothing size-wise, my whole adult life I have consistently been a 16-18/18-20, top to bottom, with a shape that seems some what apple-ish at the moment but has, in general, always been more hourglass than apple. Also it seems as if I might have rather freakishly high hips, lol... not really, but for reference, when it comes to pants or jeans what generally passes as "tall", usually a 33"-34" inseem, fit like ankle or cigar length pants on me. But evidently I don't just have long legs, no, this momma's body seems to also have one heck of a long, tall pelvis which I did finally measure to figure out for sure but, prior to that, I could tell based on the way that low cut underwear like bikini & hipsters, and any form of low rise pants, barely make it north of my low lying c-section scar location which, for those who can't relate, is basically at the top of my hooha or just at the point where my belly and my hooha meet. And because that point on my body is not even remotely close to my "hip" area such items basically fall right off my body unless they're super stretchy and I deliberately hike them up to my hip area which I put up with in my 20s and 30s, for the sake of fashion I suppose, but which was and is quite ungodly uncomfortable, and... basically... I am so over with "uncomfortable" anything (men included, lol.) In both cases I bought size 11, though, if I'm being honest, I am certain that a 10 would have fit well, too. And who knows, a 10 might have been just as comfortable or even more comfortable than the 11... but, I didn't take bother taking the chance to find out when I ordered my second set because the first set (size 11) made me so unbelievably happy that they literally changed my views about underwear for life. This whole "pants come off after work" thing or the memes about people working from home (due to covid restrictions) and not wearing pants never jived with me prior to having these boxer briefs, but now... omg... these things are super inexpensive and somehow still suit my somewhat "caviar taste" perfectly (have a good handfeel and are just so unbelievably super comfortable), PLUS... they're opaque and they basically fit (and look) like I'm wearing a loungy pair of bike shorts, so... yeah, I've spent some time over the last 2 months actually chillin in my house in my freaking underwear!!!! Life. Changing. :D
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Reviewed in the United States on June 7, 2022
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Verified Purchase
Thrifty Shopper
Belleville, US
★★★★★ 5
Soft and comfy
Size: 12 Plus, Color: Microfiber - Colors May Vary
Comfortable fit. Have bought 4 times.
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Reviewed in the United States on May 30, 2026
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Lynda
Lexington, US
★★★★★ 4
No elastic around the thighs is kinda nice!
Size: 9, Color: Cotton Stretch - Colors May Vary
Great undies! They fit good and the fabric is comfortable. Only thing is that the legs tend to ride up/bunch up with pants on. I got them for post surgery comfort and thats what I got.
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Reviewed in the United States on May 14, 2026
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Cissy Horn
Lexington, US
★★★★★ 5
Soooo comfortable
Size: 11 Plus, Color: Microfiber - Colors May Vary
Easy on/off because they really do stretch but return to shape. Fit is close to the body but not tight. Love that there is no elastic binding around my legs. Clothes glide over them because they are super smooth. Might never buy another style again.
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Reviewed in the United States on May 5, 2026

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