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    90 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
    		0000000000000000000
    3/16"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-2—00000000000000000
    3/16"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-2Paper
    		00000000000000000
    1/4"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-3—00000000000000000
    1/4"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-3Paper
    		00000000000000000
    5/16"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-4Digital
    		00000000000000000
    3/8"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-5—00000000000000000
    3/8"4-40
    		5/32"1/4"1/8"5/64"70,000NASM51576MS51576-5Paper
    		00000000000000000
     
    3/16" Diameter Shoulder (-0.001" to 0" Tolerance)
    1/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-6Digital
    		00000000000000000
    3/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-7—00000000000000000
    3/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-7Paper
    		00000000000000000
    1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-8—00000000000000000
    1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-8Paper
    		00000000000000000
    5/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-9—00000000000000000
    5/16"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-9Paper
    		00000000000000000
    3/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-10—00000000000000000
    3/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-10Paper
    		00000000000000000
    1/2"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-11Digital
    		00000000000000000
    5/8"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-12Digital
    		00000000000000000
    3/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-13Digital
    		00000000000000000
    1"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-14Digital
    		00000000000000000
    1"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-14Paper
    		00000000000000000
    1 1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-15—00000000000000000
    1 1/4"8-32
    		3/16"5/16"5/32"3/32"70,000NASM51576MS51576-15Paper
    		00000000000000000
     
    1/4" Diameter Shoulder (-0.001" to 0" Tolerance)
    3/16"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-16Digital
    		00000000000000000
    1/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-17Digital
    		00000000000000000
    5/16"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-18—00000000000000000
    5/16"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-18Paper
    		00000000000000000
    3/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-19—00000000000000000
    3/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-19Paper
    		00000000000000000
    1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-20—00000000000000000
    1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-20Paper
    		00000000000000000
    5/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-21—00000000000000000
    5/8"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-21Paper
    		00000000000000000
    3/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-22Digital
    		00000000000000000
    1"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-23—00000000000000000
    1 1/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-24—00000000000000000
    1 1/4"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-24Paper
    		00000000000000000
    1 1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-25—00000000000000000
    1 1/2"10-32
    		1/4"3/8"3/16"1/8"70,000NASM51576MS51576-25Paper
    		00000000000000000
     
    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—00000000000000000
    1/2"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-26Paper
    		00000000000000000
    5/8"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-27—00000000000000000
    5/8"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-27Paper
    		00000000000000000
    3/4"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-28—00000000000000000
    3/4"1/4"-20
    		7/16"1/2"7/32"5/32"70,000NASM51576MS51576-28Paper
    		00000000000000000
     
    3/8" Diameter Shoulder (-0.001" to 0" Tolerance)
    5/8"5/16"-18
    		1/2"9/16"1/4"3/16"70,000NASM51576MS51576-32—00000000000000000
    5/8"5/16"-18
    		1/2"9/16"1/4"3/16"70,000NASM51576MS51576-32Paper
    		00000000000000000
     
    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—00000000000000000
    5/8"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-37Paper
    		000000000000000000
    3/4"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-38Digital
    		00000000000000000
    3/4"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-38Paper
    		0000000000000000000
    1"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-39—000000000000000000
    1"3/8"-16
    		5/8"3/4"5/16"1/4"70,000NASM51576MS51576-39Paper
    		0000000000000000000
     
    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
    		1000000000000000
    0.01"No. 4
    		100000000000000
    0.016"No. 4
    		100000000000000
    0.02"No. 4
    		100000000000000
    0.03"No. 4
    		100000000000000
    0.06"No. 4
    		50000000000000
     
    For 3/16" Diameter Shoulder
    0.005"No. 8
    		100000000000000
    0.01"No. 8
    		100000000000000
    0.016"No. 8
    		100000000000000
    0.02"No. 8
    		100000000000000
    0.03"No. 8
    		100000000000000
    0.06"No. 8
    		50000000000000
     
    For 1/4" Diameter Shoulder
    0.005"No. 10
    		500000000000000
    0.01"No. 10
    		10000000000000000
    0.016"No. 10
    		5000000000000000
    0.02"No. 10
    		500000000000000
    0.03"No. 10
    		5000000000000000
    0.06"No. 10
    		250000000000000
     
    For 5/16" Diameter Shoulder
    0.005"1/4"
    		500000000000000
    0.01"1/4"
    		250000000000000
    0.016"1/4"
    		250000000000000
    0.02"1/4"
    		250000000000000
    0.03"1/4"
    		10000000000000000
    0.06"1/4"
    		250000000000000
     
    For 3/8" Diameter Shoulder
    0.005"5/16"
    		250000000000000
    0.01"5/16"
    		2500000000000000
    0.016"5/16"
    		2500000000000000
    0.02"5/16"
    		250000000000000
    0.03"5/16"
    		5000000000000000
    0.06"5/16"
    		250000000000000
     
    For 1/2" Diameter Shoulder
    0.005"3/8"
    		250000000000000
    0.01"3/8"
    		2500000000000000
    0.016"3/8"
    		2500000000000000
    0.02"3/8"
    		2500000000000000
    0.03"3/8"
    		5000000000000000
    0.06"3/8"
    		250000000000000
     
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