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Steel Machine Screw, Zinc Plated Finish, Flat Head, Phillips Drive, 1/2" Length, 1/4"-20 Threads (Pack of 100)

4.6 4.6 out of 5 stars 125 ratings
1/4"-20
#10-12
Fully Threaded
1/2 Inches
100
Material Steel
Drive System Phillips
Head Style Flat
Item dimensions L x W x H 0.5 inches
Exterior Finish Zinc

About this item

  • Steel is often used in applications where strength is the primary consideration
  • Zinc plating resists corrosion resistance and has a reflective appearance
  • Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to prevent over-tightening
  • Flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface
› See more product details

Product details

  • Item model number ‏ : ‎ B000MN4UAG
  • Date First Available ‏ : ‎ April 1, 2006
  • Manufacturer ‏ : ‎ Small Parts
  • ASIN ‏ : ‎ B000MN4UAG
  • Customer Reviews:
    4.6 4.6 out of 5 stars 125 ratings

Product Description

The steel machine screw has a zinc plated finish and a flat head with a Phillips drive. Steel is often used in applications where strength is the primary consideration. The zinc plating offers corrosion resistance and a reflective appearance. The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener. The flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface.

Machine screws are threaded fasteners that are typically used with nuts or drilled and tapped (threaded) holes. Machine screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of driver required to install and remove the screw.

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Customer reviews

4.6 out of 5 stars
125 global ratings

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Customers say

Customers find these screws to be of good quality with a good finish. They work well for mounting circuit boards and are reasonably priced. The threads are well-made, and the fit is perfect. However, opinions differ on the size.

AI-generated from the text of customer reviews

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Screw qualityQualityWorks wellValue for moneyFitSize
12 customers mention "Screw quality"10 positive2 negative

Customers like the screw quality. They say the screws are well-threaded, work great for mounting circuit boards to the front panel of a project box, and recess nicely into plastic or aluminum panels. Some mention that the steel they are made from is good.

"It was a zinc plated screw. The threads were good and the finish was what I expected" Read more

"What more can you really say. They are screws. They work. They don't strip out...." Read more

"Good screw I just took one star off because the steel they are made of is a little soft, but I must stress you get what you pay for...." Read more

"...good and these were exactly what I needed and I found no screws with bad heads or threads. The overall length of the screw is 5/8"." Read more

11 customers mention "Quality"11 positive0 negative

Customers are satisfied with the screws. They say the threads are good and the finish is what they expected. The screws are the right size and make for a solid mount.

"It was a zinc plated screw. The threads were good and the finish was what I expected" Read more

"They are great. Your life will improve if you buy these." Read more

"...It's a screw. Worked well for what I needed and quality was good." Read more

"...They are the right size and make for a solid mount." Read more

10 customers mention "Works well"10 positive0 negative

Customers like the screws. They say they work well, no more hump to slide boards over the round headed, and they are a perfect, exact fit.

"What more can you really say. They are screws. They work. They don't strip out...." Read more

"What can I say? It's a screw. Worked well for what I needed and quality was good." Read more

"...heads would be identical to the screws I tried, and work perfectly with the hot-swap caddies...." Read more

"They worked very well." Read more

7 customers mention "Value for money"7 positive0 negative

Customers appreciate the screws' value for money. They mention a reasonable price, fast delivery, and great buy.

"...I've used about 40 of them so far and have had no problems. Way cheaper than buying them from the hardware store where they are packaged 10 to a..." Read more

"...that they were available from a comprehensive selection, at a very reasonable price, and arrived in just two days...." Read more

"...The price was good and these were exactly what I needed and I found no screws with bad heads or threads...." Read more

"...The price was excellent." Read more

4 customers mention "Fit"4 positive0 negative

Customers like the screws. They say they fit well, are perfect for their needs, and are excellent for their applications.

"Perfect for my need." Read more

"Well threaded screws. Excellent for my application." Read more

"Perfect find. Hardware store wanted 12 cents a screw!" Read more

"perfect for my gear..." Read more

9 customers mention "Size"6 positive3 negative

Customers have mixed opinions about the size of the screws. Some say they are the right size and make for a solid mount, with a nice finish. Others mention they are the wrong size, even though the label says 3/8.

"...They are the right size and make for a solid mount." Read more

"...They are a perfect, exact fit." Read more

"Good small parts, nice finish" Read more

"perfect size for what I needed. Works great!" Read more

Solid Mounting
5 out of 5 stars
Solid Mounting
I use these for installing bottle openers to decorated planks. They are the right size and make for a solid mount.
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Top reviews from the United States

  • Living in Hawaii
    5.0 out of 5 stars Inexpensive, works, that's about it.
    Reviewed in the United States on March 12, 2015
    Verified Purchase
    Comes in a small bag and you almost don't think there are a hundred in there because they are so small. I've used about 40 of them so far and have had no problems. Way cheaper than buying them from the hardware store where they are packaged 10 to a bag for over $1.
    Helpful
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  • Mackelaus
    5.0 out of 5 stars Normal screws
    Reviewed in the United States on September 19, 2020
    Verified Purchase
    It was a zinc plated screw. The threads were good and the finish was what I expected
    One person found this helpful
    Helpful
     Report
  • JPC
    4.0 out of 5 stars Yep, they are screws
    Reviewed in the United States on December 14, 2013
    Verified Purchase
    What more can you really say. They are screws. They work. They don't strip out. I'm using them to secure electrical box extensions on boxes that were set too deep.
    Helpful
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  • Fatty McFatfat
    5.0 out of 5 stars Good quality screws.
    Reviewed in the United States on June 12, 2021
    Verified Purchase
    They are great. Your life will improve if you buy these.
    Helpful
     Report
  • Slim
    5.0 out of 5 stars Exactly what they should be
    Reviewed in the United States on December 12, 2011
    Verified Purchase
    What can you say about the bolts themselves? They're exactly what they should be. The nice thing, though, is that they were available from a comprehensive selection, at a very reasonable price, and arrived in just two days. I wasted time checking the three "big box" stores in my area, but none stocked this size bolt with a phillips head. Of course, if they had them, they would have been in a small pack of 6 or 8, which means I'd have paid more for the 36 I needed than Amazon charged me for 100. Amazon/Small Parts comes through yet again.
    Helpful
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  • Rob Mills
    5.0 out of 5 stars Great product
    Reviewed in the United States on February 28, 2020
    Verified Purchase
    Perfect for my need.
    Helpful
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  • Gschutz
    5.0 out of 5 stars Good Quality
    Reviewed in the United States on February 25, 2019
    Thread Size: 1/4"-20Fastener Size: #10-12Thread Coverage: Fully ThreadedItem Length String: 2 InchesNumber of Items: 100Verified Purchase
    What can I say? It's a screw.
    Worked well for what I needed and quality was good.
    Helpful
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  • MrLarry0001
    5.0 out of 5 stars Solid Mounting
    Reviewed in the United States on June 18, 2019
    Verified Purchase
    I use these for installing bottle openers to decorated planks. They are the right size and make for a solid mount.
    Customer image
    MrLarry0001
    5.0 out of 5 stars Solid Mounting
    Reviewed in the United States on June 18, 2019
    I use these for installing bottle openers to decorated planks. They are the right size and make for a solid mount.
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    Helpful
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Top reviews from other countries

  • Dan
    5.0 out of 5 stars Great product
    Reviewed in Canada on May 5, 2023
    Verified Purchase
    I needed screws for an xotic effects pedal so I contacted Xotic for replacement screws. Their quick response was tge screws were a 6/32 1/4". That was incorrect. Turns out thread size was correct but the length was half inch. All is not lost as the screws are the perfect replacement for my Sears Washer lid. Now I have an abundance of replacement screws. I'm sure I will find additional uses.
    Report
  • Client d'Amazon
    5.0 out of 5 stars Excellent
    Reviewed in Canada on May 23, 2019
    Verified Purchase
    Excellent
    Report