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Hillman 290302 3/8-Inch Anti-Turn Washer, 50-Pack, Galvanized

4.6 4.6 out of 5 stars 276 ratings

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3/8 Inch

Purchase options and add-ons

Material Steel
Outside Diameter 0.75 Inches
Washer Type Square-Neck Bolt Lock
Exterior Finish Hot-Dipped Galvanized
Fastener Size 3/8"

About this item

  • Prevents rotation once installed
  • Conforms to ASTM A153
  • Made of high-strength steel
  • Mechanically galvanized finish
  • Quality Hillman fasteners
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Hillman 290302 3/8-Inch Anti-Turn Washer, 50-Pack, Galvanized
Hillman 290302 3/8-Inch Anti-Turn Washer, 50-Pack, Galvanized
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Price$10.37$7.99$6.99$8.97$15.99$9.28
Delivery
Get it as soon as Monday, Apr 1
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Customer Ratings
Sold By
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MAKERS BOLT
Amazon.com
Amazon.com
material
Steel
Iron
Alloy Steel
Low Carbon Steel
Steel
Alloy Steel
washer type
Square-Neck Bolt Lock
4-Claw Washers
Shoulder
Split Lock
Square
Flat
size
3/8 Inch
3/8"
3/8"
3/8 in.
number of pieces
50
100
50
100
50
50
inside diameter
0.38 inches
0.38 inches
0.41 millimeters
0.41 inches
outside diameter
0.75 inches
0.69 inches
1.11 millimeters
0.81 inches
thickness
0.35 inches
0.09 inches
0.05 millimeters
0.05 inches
fastener size
3/8"
1/4
3/8"
3/8"
3/8"
metal type
Aluminum, Alloy Steel
Iron Galvanized
Alloy Steel
Carbon Steel
Carbon Steel
Alloy Steel
exterior finish
Hot-Dipped Galvanized
Iron
Hot-Dipped Galvanized
Hot Dipped Galvanized
Zinc
Galvanized

From the manufacturer

Hillman Solutions is a leading North American provider of hardware products, including home improvement products, protective and job site gear solutions including gloves and storage, and robotic technologies encompassing key duplication and accessories, engraving and knife sharpening. Hillman designs innovative products and merchandising solutions for complex categories. Founded in 1964 in Cincinnati, Ohio, Hillman believes that the building never stops.

Product information

Technical Details

Additional Information

Warranty & Support

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Hillman 290302 3/8-Inch Anti-Turn Washer, 50-Pack, Galvanized


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Product Description

Product Description

Anti-turn washers have serrations that extend radially inward and/or outward to bite into the bearing surface. This type of washer is effective as a lock washer when used with a soft substrate, such as aluminum or plastic. Variants all conform to ASTM A153.

From the Manufacturer

The anti-turn washer has serrations that extend radially inward and/or outward to bite into the bearing surface. This type of washer is effective as a lock washer when used with a soft substrate, such as aluminum or plastic.

Customer reviews

4.6 out of 5 stars
4.6 out of 5
276 global ratings

Customers say

Customers like the quality, versatility, fit and appearance of the washers. For example, they mention it works great to secure the bolt head, keeps the carriage bolt from turning and that it looks good. That said, some appreciate the simple yet effective engineering.

AI-generated from the text of customer reviews

19 customers mention19 positive0 negative

Customers are satisfied with the quality of the washer. For example, they mention it works well, is sturdy, and is thick enough to last. Some say it works great with soft wood and 5/16th carriage bolts.

"Worked well...." Read more

"Good product. Is what I needed." Read more

"...works great with pinelumber and looks good too.I was very saticfied with this product." Read more

"Excellent for use with 5/16th carriage bolts in wood. About the size of a quarter." Read more

6 customers mention6 positive0 negative

Customers like the versatility of the washer. They mention it works great to secure the bolt head in a wood use application, and it prevents the carriage bolt from turning. The teeth grasp the wood and prevent rotation while securing the nut.

"...The teeth grasp the wood and prevent rotation while securing the nut...." Read more

"Yes ,they keep the carriage bolt from turning. Add some torque and they become cups. Made in china, only 0.049 thick, less than a standard washer." Read more

"This item works great to secure the bolt head in a wood use application." Read more

"...They work great for carriage bolts on a swing set I built." Read more

4 customers mention4 positive0 negative

Customers like the fit of the washers. They mention that it is true to size, sturdy, and fits perfectly on a spindle.

"Perfect fit for the 3/8" carriage bolt that I was using. The washers are of a sufficiently thick, high quality material." Read more

"...They fit perfectly on a spindle for the purpose. Only 1.3 mm thick, but maybe it can be doubled." Read more

"True to size and sturdy." Read more

"Fits the collar perfectly..." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the appearance of the washer. They mention that it has a very smart design, looks good, and is common sense for carriage bolt applications. Some appreciate the good simple yet effective engineering.

"...works great with pinelumber and looks good too.I was very saticfied with this product." Read more

"Cool product, now use on all my pressure treated deck projects...." Read more

"Common sense design for carriage bolt applications. I love good simple yet effective engineering that does not cost a fortune." Read more

3 customers mention3 positive0 negative

Customers appreciate the value of the washer.

"Product as described. Reasonably priced as opposed to purchasing from a large box store" Read more

"...I love good simple yet effective engineering that does not cost a fortune." Read more

"Great value..." Read more

Right on the Money
5 Stars
Right on the Money
In Construction sizes are a bit daunting. I measured the square part of my Closet Bolt, it was 5/16, I ordered 5/16 size and fit perfect. Fixed my plastic wheel barrow. I'd recommend using these BEFORE the Wheel Barrow cracks, cause they all do.
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Top reviews from the United States

Reviewed in the United States on June 22, 2022
One person found this helpful
Report
Reviewed in the United States on July 6, 2023
Size: 3/8 InchVerified Purchase
Reviewed in the United States on December 6, 2023
Customer image
5.0 out of 5 stars Right on the Money
Reviewed in the United States on December 6, 2023
In Construction sizes are a bit daunting. I measured the square part of my Closet Bolt, it was 5/16, I ordered 5/16 size and fit perfect. Fixed my plastic wheel barrow. I'd recommend using these BEFORE the Wheel Barrow cracks, cause they all do.
Images in this review
Customer image
Customer image
Reviewed in the United States on August 7, 2022
Size: 1/4 InchVerified Purchase
Reviewed in the United States on June 2, 2023
Size: 3/8 InchVerified Purchase
Reviewed in the United States on March 21, 2022
Customer image
5.0 out of 5 stars Good product
Reviewed in the United States on March 21, 2022
These washers are easy to use. The teeth grasp the wood and prevent rotation while securing the nut. I spray painted these, along with the lags, black for a more finished look to the deck.
Images in this review
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Reviewed in the United States on November 6, 2020
Size: 3/8 InchVerified Purchase
Reviewed in the United States on May 18, 2019
2 people found this helpful
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Top reviews from other countries

Michelle
5.0 out of 5 stars Works perfect with carriage bolts and couldn’t find anywhere else
Reviewed in Canada on December 14, 2023
maureen floyd
5.0 out of 5 stars As expected, fast shipping
Reviewed in Canada on April 30, 2022
Wesley McAllister
1.0 out of 5 stars Not the right size. Does not fit a 3/8 bolt.
Reviewed in Canada on November 27, 2021
Size: 3/8 InchVerified Purchase
Customer image
Wesley McAllister
1.0 out of 5 stars Not the right size. Does not fit a 3/8 bolt.
Reviewed in Canada on November 27, 2021
Would need to be larger then .375. I have tried 5 washers and they are all the same size and do not fit the bolts.
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Customer image
3 people found this helpful
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Fasteddie
5.0 out of 5 stars First time usage.
Reviewed in Canada on September 4, 2020
Size: 1/4 InchVerified Purchase
potato
5.0 out of 5 stars These are awesome for any deck work
Reviewed in Canada on October 31, 2022