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    5 Products

    Shims for Lengthening Screw Shoulders

    Image of ProductInUse. Front orientation. Contains Annotated. Shims. Round, Sold Individually, Shoulder Lengthening.
    Image of Product. Front orientation. Shims. Round, Sold Individually, Shoulder Lengthening.
    When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.
    You can stack multiple shims to achieve the exact shoulder length or space you need.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thk.
    Thk. Tolerance
    For Screw
    Size
    ID
    ID
    Tolerance
    OD
    OD Tolerance
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    For 3/16" Diameter Shoulder
    0.005"-0.0005" to 0.0005"No. 8
    		0.146"0" to 0.011"0.178"-0.002" to 0.002"Rockwell B7010000000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
     
    For 3/16" Diameter Shoulder
    0.005"-0.0005" to 0.0005"No. 8
    		0.146"0" to 0.011"0.178"-0.002" to 0.002"Rockwell B701000000000000000
     

    Shims for Ball Bearing Outer Rings

    Image of Product. Front orientation. CrossSection, ZoomedIn view. Contains Annotated. Shims. For Ball Bearing Outer Rings, Sold Individually, Round.
    Boost bearing efficiency and lifespan. Often used on motor shafts, these shims evenly distribute the load between multiple bearings by creating space between their outer rings. This prevents excessive pressure on any single bearing, maintaining proper alignment for smooth operation and reduced wear.
    You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    For
    Bearing
    Trade
    No.
    ID
    OD
    ID
    ID
    Tolerance
    OD
    OD Tolerance
    Min.
    Hardness
    Choose a Thickness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    R1
    		0.055"3/16"0.123"0" to 0.005"0.178"-0.005" to 0"Rockwell B70
    0.003"
    ,
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		25000000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    R1
    		0.055"3/16"0.123"0" to 0.005"0.178"-0.005" to 0"Rockwell B90
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		1000000000000000
     
    Brass
    R1
    		0.055"3/16"0.123"0" to 0.005"0.178"-0.005" to 0"Rockwell B70
    0.003"
    ,
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		100000000000000
     
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