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1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12-pack)

Includes 12 bolts (33¢ /bolt)
$3.91
  • Flat head gives a smooth exterior finish
  • Use to attach hardware to garage doors
  • Steel construction offers long-lasting use and solid performance
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Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy
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Product Details

The carriage bolts and nuts in this set are constructed of steel, and each come in a zinc-plated finish. The threading on these fasteners is 1/4 in.-20 teeth per inch (TPI), and they measure 1/4 in. diameter x 1-7/8 in. length. The carriage bolts feature a square section beneath their smooth, domed heads to help prevent spinning during tightening of bolts. These nuts and bolts are packaged for use with garage door hardware, but are useful with many other applications.
  • Compatible with most garage door hardware installations
  • The threading on these fasteners is 1/4-20 TPI
  • This set includes 12 carriage bolts and 12 nuts
  • Steel constructed nuts and carriage bolts
  • Zinc-plated nuts and bolts
  • Smooth, domed heads
  • These carriage bolts feature a square section beneath the head which helps prevent them from spinning during tightening of nuts
  • For further dimensional information, please see the line drawing
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

Dimensions: H 4.625 in, W 2.75 in, D 1.125 in

Dimensions

Assembled Depth (in.)1.125 inAssembled Height (in.)4.625 in
Assembled Width (in.)2.75 inFastener Length (in.)1.87
Head diameter (in.)0.25Size1/4 in

Details

ACQ Rated FastenerNoFastener Length20 in
Fastener PlatingZincFastener TypeCarriage Bolt
Finish FamilyZincGradeNot Graded
MaterialSteelMeasurement StandardSAE
Package Quantity12Product Weight (lb.)0.395 lb
Returnable90-Day

Warranty / Certifications

Manufacturer WarrantyGoods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse.
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Questions & Answers

6Questions
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Q:If I have a older headboard and have misplaced bolts how can figured out which one to used
by|Jan 23, 2019
2 Answers
Answer This Question

A:  Thank you for your inquiry regarding this item from Prime-Line Products. There is no way to know for sure without you doing a measurement of the thickness of surfaces to be gone through. You can usually use a little longer length carriage bolt as long as the end of bolt will not run into something. You can contact the manufacturer directly with your questions regarding this item, or any other product manufactured by Prime-Line Products by calling their toll free number at (877) 649-9740, or by contacting them by email at info@primeline.net.

by|Jan 23, 2019

    A:  I used this particular bolt and nut to fasten my bed's footboard, and it works great. A bolt that held the footboard was missing, and this did the trick!

    by|May 27, 2022
    1 found this answer helpful
    caret
    Q:Are these suitable for attaching a headboard to a standard metal bed frame?
    by|Jan 30, 2016
    1 Answer
    Answer This Question

    A:  Thank you for your inquiry regarding this item from Prime-Line Products. So as long as the diameter of the bolt fits and its length is long enough, they should work just fine. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net

    by|May 3, 2023
      1 found this answer helpful
      caret
      Q:In what grades do these 1/4 inch carriage bolts come?
      by|May 6, 2015
      1 Answer
      Answer This Question

      A:  Thank you for your inquiry regarding this item from Prime-Line Products. These bolts are not graded to industry standard. it is not recommended to used these bolts outside the intended application. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net

      by|May 3, 2023
        caret
        Q:Are they $3.19 for one or for 20
        by|Jul 16, 2014
        1 Answer
        Answer This Question

        A:  Thank you for your recent inquiry regarding this item from Prime-Line Products. The price displayed is per package. The contents of this package includes 12 carriage bolts and 12 nuts. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net

        by|May 3, 2023
          2 found this answer helpful
          Showing 1-4 of 6
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          Customer Reviews

          4.5 out of 5
          (21)
          • 4.5
            out of 21 reviews
          • 86% recommend this product
          Filter by:
          Showing 1-10 of 21 reviews
          Excellent Product But Needs Better Description
          I was leery about buying these online because the description is incorrect, and there is no good view of the bolt head from the top. They are not "Domed Heads". These are the exact replacement for a repair I am doing on a garage door panel. They need to change the description to say "Smooth, Flat Heads". That's important because you want to countersink the heads flush to the panel to make them invisible once the door is sanded/painted. These will sit flush with the exterior of the panel.
          by
            • Recommended
            5 found this review helpful
            The bolts and nuts were accurate in dimensions stated and fit the lift handles perfectly.
            by
              I am useing u-posts to put up a 1/4 inch plywood fence between my neighbor and I . I needed a bolt to go threw the holes in the center of the u-posts and these are perfect. One of the young men working the costomer service desk found them for me over the phone. Thank Heavens! He made my project posable. I and my very small dog thank you all.
              by
              • Verified Purchase
              by
              • Verified Purchase
              Easily fixed garage door handles with these...
              Easily fixed garage door handles with these
              by
              • Verified Purchase
              LZ'sHomeDepot
              Look Good To me !!!!!!!!!!!!
              by
              • Verified Purchase
              It worked well with my garage door...
              It worked well with my garage door
              by
              • Verified Purchase
              The bolts were separated from my original order so they...
              The bolts were separated from my original order so they were useless to me.
              by
              • Verified Purchase
              by
              • Verified Purchase
              Garage Door Screws
              Just what I was looking for at a better price than anywhere else. Came in the time frame they said it would.
              by
              • Verified Purchase
              • Recommended
              Showing 1-10 of 21 reviews

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