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    1 Product
    About Threaded Inserts
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    Choose the right threaded insert for your application and learn how to install it securely.

    Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal.
    These inserts are manufactured and tested to meet or compare to strict standards adopted by the U.S. military. The keys drive into aluminum and other soft metal for a secure hold that won't slip or rotate, even in vibrating vehicle or aerospace parts. These inserts are comparable to Keensert inserts.
    To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Thread
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    Standard Wall
     
    18-8 Stainless Steel
    3/8"-24
    		9/16"-12
    		0.500"33/64"
    		0.521"4MS51831-204, NAS1395C693904A54200000
    Key-Locking Insert, Mil. Spec., 18-8 Stainless Steel with Thick Wall, 3/8"-24 Thread Size
    EachIn stock
     
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