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    68 Products

    Stainless Steel Hex-Drive Precision Shoulder Screws

    Image of Product. Front orientation. Shoulder Screws. Stainless Steel Hex-Drive Precision Shoulder Screws.
    Our go-to choice for assemblies that require smooth, accurate movement. These screws are engineered for tight tolerances, with shoulder diameters twice as precise as those on standard-fit screws. They're made of stainless steel, so they won't rust, though they're not as strong as their alloy steel counterparts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Military Specification—These screws are manufactured and tested to strict U.S. military standards for material and construction.
    Head
    Each
    Shoulder
    Lg.
    Thread
    Size
    Thread
    Lg.
    Dia.
    Ht.
    Drive
    Size
    Tensile Strength,
    psi
    Specs.
    Met
    Mil.
    Spec.
    Material Certificate
    Form
    1-4
    5-Up
    18-8 Stainless Steel
     
    1/8" Diameter Shoulder (-0.001" to 0" Tolerance)
    1/8"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-1Digital
    		94035A5110000000000
    3/16"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-2Digital
    		94035A51300000000
    1/4"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-3—94035A51500000000
    5/16"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-4Digital
    		94035A51700000000
    3/8"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-5—94035A51900000000
     
    3/16" Diameter Shoulder (-0.001" to 0" Tolerance)
    1/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-6Digital
    		94035A20100000000
    3/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-7—94035A20200000000
    1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-8Digital
    		94035A20300000000
    5/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-9Digital
    		94035A20000000000
    3/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-10—94035A20400000000
    1/2"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-11Digital
    		94035A20500000000
    5/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-12Digital
    		94035A20600000000
    3/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-13Digital
    		94035A20700000000
    1"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-14Digital
    		94035A20800000000
    1 1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-15—94035A20900000000
     
    1/4" Diameter Shoulder (-0.001" to 0" Tolerance)
    3/16"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-16Digital
    		94035A53300000000
    1/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-17Digital
    		94035A53400000000
    5/16"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-18—94035A53200000000
    3/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-19—94035A53500000000
    1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-20Digital
    		94035A53700000000
    5/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-21Digital
    		94035A53900000000
    3/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-22Digital
    		94035A54000000000
    1"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-23—94035A54200000000
    1 1/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-24Digital
    		94035A54400000000
    1 1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-25Digital
    		94035A54600000000
     
    5/16" Diameter Shoulder (-0.001" to 0" Tolerance)
    1/2"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-26—94035A30400000000
    5/8"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-27—94035A30500000000
    3/4"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-28Digital
    		94035A30600000000
     
    3/8" Diameter Shoulder (-0.001" to 0" Tolerance)
    5/8"5/16"-18
    		1/2"9/16"1/4"3/16"70,000NASM51576MS51576-32Digital
    		94035A40400000000
     
    1/2" Diameter Shoulder (-0.001" to 0" Tolerance)
    5/8"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-37—94035A50200000000
    3/4"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-38Digital
    		94035A50300000000
    1"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-39Digital
    		94035A504000000000
     
    Shoulder Shims
    Image of ProductInUse. Front orientation. Contains Annotated. Shims. Shoulder Shortening.

    Shoulder

    Shortening

    Image of Product. Front orientation. Shims.
    Shoulder Shortening—Pare down the shoulder on screws or tighten the screw's hold. Stack multiple shims to get the exact spacing you need.
    Shoulder Shortening
    Thk.
    For Screw
    Size
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    For 1/8" Diameter Shoulder
    0.005"No. 4
    		1094773A60600000
    0.01"No. 4
    		1094773A6470000
    0.016"No. 4
    		1094773A6790000
    0.02"No. 4
    		1094773A7060000
    0.03"No. 4
    		1094773A7370000
    0.06"No. 4
    		594773A7660000
     
    For 3/16" Diameter Shoulder
    0.005"No. 8
    		1094773A6080000
    0.01"No. 8
    		1094773A6490000
    0.016"No. 8
    		1094773A6810000
    0.02"No. 8
    		1094773A7080000
    0.03"No. 8
    		1094773A7390000
    0.06"No. 8
    		594773A7680000
     
    For 1/4" Diameter Shoulder
    0.005"No. 10
    		5094773A6100000
    0.01"No. 10
    		10094773A65100000
    0.016"No. 10
    		5094773A68300000
    0.02"No. 10
    		5094773A71000000
    0.03"No. 10
    		5094773A74100000
    0.06"No. 10
    		2594773A7700000
     
    For 5/16" Diameter Shoulder
    0.005"1/4"
    		5094773A6120000
    0.01"1/4"
    		2594773A6530000
    0.016"1/4"
    		2594773A6860000
    0.02"1/4"
    		2594773A7120000
    0.03"1/4"
    		10094773A74300000
    0.06"1/4"
    		2594773A7720000
     
    For 3/8" Diameter Shoulder
    0.005"5/16"
    		2594773A6140000
    0.01"5/16"
    		2594773A65500000
    0.016"5/16"
    		2594773A68800000
    0.02"5/16"
    		2594773A7140000
    0.03"5/16"
    		5094773A74500000
    0.06"5/16"
    		2594773A7740000
     
    For 1/2" Diameter Shoulder
    0.005"3/8"
    		2594773A6160000
    0.01"3/8"
    		2594773A65700000
    0.016"3/8"
    		2594773A68900000
    0.02"3/8"
    		2594773A71600000
    0.03"3/8"
    		5094773A74700000
    0.06"3/8"
    		2594773A7760000
     
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