McMaster-Carr logo
    Filter by
    Nut Type
    Industrial Info Compare
    DFARS Specialty Metals
    Number of Pieces
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Container Features
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    4 Products

    Locking Type

    Performance

    Nylon-Insert Locknut Assortments

    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknut Assortments.
    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknut Assortments.
    With a range of sizes on hand, you can use these assortments to fasten a variety of parts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    No. of
    Pieces
    Locknuts Included
    Container
    Type
    Each
    Zinc-Plated Steel
    5504-40 (100 Pieces)
    6-32 (100 Pieces)
    8-32 (100 Pieces)
    10-24 (100 Pieces)
    10-32 (100 Pieces)
    1/4"-20 (50 Pieces)    		Plastic Box000000000000000
     
    18-8 Stainless Steel
    5504-40 (100 Pieces)
    6-32 (100 Pieces)
    8-32 (100 Pieces)
    10-24 (100 Pieces)
    10-32 (100 Pieces)
    1/4"-20 (50 Pieces)    		Plastic Box00000000000000
     

    Assortments of Locknuts with External-Tooth Lock Washer

    Image of Product. Front orientation. Locknuts. Assortments of Locknuts with External-Tooth Lock Washer.
    Image of Product. Front orientation. ZoomedIn view. Locknuts. Assortments of Locknuts with External-Tooth Lock Washer.
    With a range of sizes on hand, you can use these assortments to fasten a variety of parts. These locknuts combine a hex nut with a free-spinning lock washer, so you can twist them into place by hand and save on assembly time. Once the nut is against your material surface, tighten it down with a wrench or socket to get the teeth to bite. Although these nuts install more quickly than nylon-insert locknuts, they don't hold up as well against vibration and can mar your material. As long as the washer stays intact, you can reuse them. Also known as Keps and K-lock nuts.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    No. of
    Pieces
    Locknuts Included
    Container
    Type
    Each
    Zinc-Plated Steel
    6004-40 (100 Pieces)
    6-32 (100 Pieces)
    8-32 (100 Pieces)
    10-24 (100 Pieces)
    10-32 (100 Pieces)
    1/4"-20 (100 Pieces)    		Plastic Box000000000000000
     
    18-8 Stainless Steel
    6004-40 (100 Pieces)
    6-32 (100 Pieces)
    8-32 (100 Pieces)
    10-24 (100 Pieces)
    10-32 (100 Pieces)
    1/4"-20 (100 Pieces)    		Plastic Box00000000000000
     
    back to top