SKU: 75501995168

Hillman 3/8 in. Hot-Dipped Galvanized Steel Split Lock Washer, 100-Pack

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Description

Hillman 3/8 in. Hot-Dipped Galvanized Steel Split Lock Washer, 100-Pack3 8 in. Hot Dipped Galvanized Split Lock Washers (100 Pack) Built for vibration prone, outdoor applications, these Hillman split lock washers bite into the mating surface to help prevent nuts and bolts from loosening. Made of steel with a hot dipped galvanized finish for superior corrosion resistance, theyre ideal for treated lumber and general construction. Key Features: Secure Hold Under Vibration: Split ends grip mating surfaces to resist loosening

3/8 in. Hot-Dipped Galvanized Split Lock Washers (100-Pack)

Built for vibration-prone, outdoor applications, these Hillman split lock washers bite into the mating surface to help prevent nuts and bolts from loosening. Made of steel with a hot-dipped galvanized finish for superior corrosion resistance, they’re ideal for treated lumber and general construction.

Key Features:

  • Secure Hold Under Vibration: Split ends grip mating surfaces to resist loosening of nuts and bolts
  • Corrosion Resistant: Hot-dipped galvanized steel stands up to harsh outdoor conditions
  • Sized for Compatibility: 3/8 in. diameter—use with matching nuts and bolts
  • Project Ready Quantity: 100-pack supplies jobs large and small
  • Versatile Application: Suitable for treated lumber and indoor/outdoor assemblies

Specifications Table:

Specification Details
Brand Hillman
Diameter 3/8 inch
Material Steel
Finish Hot-dipped galvanized
Number in Package 100
Packaging Type Boxed
Category Lock Washer
Unit of Measurement Metric (per source listing)
Package Dimensions (L x W x H) 1.8 in x 1.4 in x 1.5 in
Package Weight 0.7 lb

Frequently Asked Questions (FAQ):

Q: What size hardware should I use with these washers?
A: Use with 3/8 in. diameter nuts and bolts for proper fit and performance.

Q: Are these suitable for outdoor use?
A: Yes. The hot-dipped galvanized finish provides strong corrosion resistance for outdoor and treated-lumber applications.

Q: How do split lock washers prevent loosening?
A: The split design bites into the mating surface when tightened beneath a nut, increasing friction to help keep fasteners secure during vibration.

Q: Can I mix these with stainless or other finishes?
A: For best corrosion performance, use with hardware of similar material/finish and the same 3/8 in. diameter.

Q: How many washers are included?
A: 100 washers per package.

Industrial Grip with Weathered Grace

There’s a quiet confidence in hardware that works as hard as it looks. These galvanized split lock washers bring a rugged, tactile texture that complements raw woods and cool metals, anchoring your outdoor structures with subtle sophistication. I love pairing them with matte bolts on exposed joinery for a refined, workshop-chic detail. Consider them a small yet essential luxury—performance and polish in a single turn.

Secure your projects with confidence—add this 100-pack of galvanized split lock washers 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: 75501995168

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4.8 ★★★★★
Based on 194 reviews
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Product Reviews
L
Verified Purchase
Laura M. Kinney
Los Angeles, US
★★★★★ 2
Was hopeful…
Was hoping this version would be better, but no. Welcome to the Nite Ize repair center. The pictures show the old version run by LED batteries. Although they claim the balls are waterproof, no. I’ve learned to clean out the contacts and add new batteries to reuse them, but a lot of the time the rust has already formed. The new rechargeable version is more expensive and has the same ‘waterproof’ casing. First charge was good; second charge didn’t even last for our retrieving sessions one evening. Third session on a full Charge didn’t even last one session. Too much money for the quality. When they work - they are great. Unfortunately, still the best on the market, it it’s just like throwing away money. Innovators???
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
R
Verified Purchase
Robert
Carnegie, US
★★★★★ 5
Works Great! Very bright
My dog and I really love this ball. Bought this so we can play in the field behind our house at night. Tried other balls, like the glowing ones, but they're not bright enough. Other battery powered balls don't stay on long enough and I got tired of looking for them in the dark. This one stays on, depending on the switch setting, either 5 minutes, or indefinitely until it's shut off or until the battery dies. The battery, according to the instructions, should last 10 hours before needing recharging. I've charged it once when it was received, haven't had to re-charge it yet, played with it about 7 nights now 20 min each time and it's still going. Others have said it's not very durable, but I've found it to be durable enough to play catch with our border collie, haven't had any issues. but I don't let him chomp on it all he wants, just throw it and he brings it back. I suppose if your dog is an aggressive chewer and you let him just sit there and go to town on it, it won't last very long, just like any other ball. We use this ball only at night when needed, and use cheaper balls at other times to increase its life span.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2024
L
Verified Purchase
Laurie R
Belleville, US
★★★★★ 5
THIS IS A MUST-BUY! If you have a dog--you NEED this ball!
Color: Orange
We have two 18-month-old chocolate Labs (brothers—basically twins with paws). The best time to walk them is early morning or just before dark… which is exactly how we managed to lose approximately 9,472 tennis balls in our cornfield. RIP, brave yellow soldiers. So I went searching for a ball that didn’t just glow—I wanted one that full-on lights up like a tiny dog disco. Enter this LED ball. Game. Changer. Our walks are now way more fun. The ball bounces, flashes, and changes colors like it’s auditioning for a rave. People literally slow their cars as they drive past our field just to watch the light show. I’m not saying we’re local celebrities now… but I’m not not saying that either. And here’s the real magic: when the boys get distracted and abandon the ball (because squirrel), it stays lit so I can actually find it. We also bought a ball launcher from Walmart for about $9, and the LED ball fits perfectly—same size as a tennis ball, just 100x cooler. This ball is waterproof and mostly floats, although I haven’t been brave enough to throw it into the pond or river because I’m positive my dogs would treat that as a full-scale navy search mission and never find it again. It’s easy to charge, and even with 2–3 hours of walking daily, I only have to plug it in every few weeks. We’ve had it for months now and it’s still going strong—super durable. We don’t let them chew on it off-walk (because Labs), but during fetch? It’s a champ. Also—small but hilarious detail—when they catch it, their mouths light up. I have accidentally created glow-in-the-dark dogs. I love this ball so much I’m buying a backup because life without it is not an option. Best dog toy EVER. Whoever invented this deserves a medal, a parade, and a lifelong supply of tennis balls they’ll never lose again. 🐾💡
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
K
Verified Purchase
Karen Roth
Grantham, US
★★★★★ 1
DISAPPOINTED
Color: Blue
only lasted 3 months after about a dozen uses. The LED core fell out and now it's totally useless. Not worth the cost at all. Disappointed because my dogs really loved them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
F
Verified Purchase
Flopsy Mopsy Not a Robot
Port Orchard, US
★★★★★ 5
Dog is obsessed with this.
The spa works as intended it lights up at night, which is super helpful for short winter days and for when the snow starts to pile up, it illuminates the snow pile that dog dropped it in so I can find it. I haven’t actually charged it yet. It came fully charged and has been in use for over a week without needing a recharge. We only use it on outside excursions together. I keep it in my pocket on walks in case he needs something in his mouth or an incentive to run a little off leash. I like that there are two settings to the light which I didn’t notice when I ordered it. One will shut off after five minutes of inactivity to save battery, which is really convenient so I don’t have to keep on screwing it to turn it on and off or there’s a second setting where the light stays on until you manually turn it off. We have it on the battery saving mode and we have never lost it. Overall, a really fun toy that even the neighbors, tiny dog who can barely pick it up and enjoys. It’s not really soft for like chewing, but that also means he’s not going to destroy it. It is a heavy ball to throw, but not too bad. One of my favorite purchases for this puppy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2025

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