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    68 Products

    Mil. Spec. Plastic Washers

    Image of Product. Front orientation. Washers. Mil. Spec. Plastic Washers.
    These washers are manufactured and tested to strict U.S. military standards for material and construction. They are lightweight, nonconductive, and naturally rust resistant. Commonly used in electronics and automation applications, they take the pressure off screws and nuts to protect mounting surfaces.
    Nylon—The most popular plastic washers, these are strong, durable, and economical. Nylon will swell and weaken when exposed to moisture, so these washers are best for dry environments.
    Chemical-Resistant High-Temperature PTFE—The most chemical-resistant plastic washers we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners, even at temperatures up to 500° F. Their slippery surface reduces friction between the washer, fastener, and mounting surface to prevent sticking when tightening and loosening. They are also good electrical insulators.
    Temp.
    Range
    For Screw
    Size
    ID
    OD
    Thk.
    Min.
    Max.,
    ° F
    Mil.
    Spec.
    Specs. Met
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 0
    		0.068"0.203"0.016" to 0.024"Not Rated180MS51859-11—White50000000000000000
    No. 1
    		0.079"0.162"0.016" to 0.024"Not Rated180MS51859-12—White5000000000000000
    No. 2
    		0.098"0.203"0.025" to 0.035"Not Rated180MS51859-1—White5000000000000000
    No. 2
    		0.098"0.260"0.011" to 0.021"Not Rated180MS51859-13—White10000000000000000
    No. 2
    		0.105"0.250"0.021" to 0.041"Not Rated180—NAS1515-H02LWhite10000000000000000
    No. 2
    		0.105"0.250"0.053" to 0.073"Not Rated180—NAS1515-H02White10000000000000000
    No. 4
    		0.125"0.312"0.021" to 0.041"Not Rated180—NAS1515-H04LWhite10000000000000000
    No. 4
    		0.125"0.312"0.053" to 0.073"Not Rated180—NAS1515-H04White10000000000000000
    No. 4
    		0.127"0.297"0.031" to 0.049"Not Rated180MS51859-2—White25000000000000000
    No. 4
    		0.127"0.350"0.025" to 0.035"Not Rated180MS51859-14—White10000000000000000
    No. 6
    		0.149"0.375"0.021" to 0.041"Not Rated180—NAS1515-H06LWhite500000000000000
    No. 6
    		0.149"0.375"0.053" to 0.073"Not Rated180—NAS1515-H06White5000000000000000
    No. 6
    		0.160"0.328"0.031" to 0.049"Not Rated180MS51859-3—White10000000000000000
    No. 8
    		0.174"0.375"0.021" to 0.041"Not Rated180—NAS1515-H08LWhite500000000000000
    No. 8
    		0.174"0.375"0.053" to 0.073"Not Rated180—NAS1515-H08White500000000000000
    No. 8
    		0.192"0.406"0.031" to 0.065"Not Rated180MS51859-4—White10000000000000000
    No. 10
    		0.203"0.438"0.021" to 0.041"Not Rated180—NAS1515-H3LWhite500000000000000
    No. 10
    		0.203"0.438"0.053" to 0.073"Not Rated180—NAS1515-H3White5000000000000000
    No. 10
    		0.203"0.438"0.084" to 0.104"Not Rated180—NAS1515-H3HWhite5000000000000000
    No. 10
    		0.225"0.469"0.031" to 0.065"Not Rated180MS51859-5—White10000000000000000
    1/4"
    		0.265"0.500"0.021" to 0.041"Not Rated180—NAS1515-H4LWhite5000000000000000
    1/4"
    		0.265"0.500"0.053" to 0.073"Not Rated180—NAS1515-H4White5000000000000000
    1/4"
    		0.265"0.500"0.084" to 0.104"Not Rated180—NAS1515-H4HWhite5000000000000000
    1/4"
    		0.290"0.572"0.056" to 0.070"Not Rated180MS51859-17—White5000000000000000
    1/4"
    		0.290"0.688"0.040" to 0.065"Not Rated180MS51859-6—White5000000000000000
    1/4"
    		0.290"0.890"0.025" to 0.035"Not Rated180MS51859-18—White5000000000000000
    5/16"
    		0.328"0.562"0.021" to 0.041"Not Rated180—NAS1515-H5LWhite500000000000000
    5/16"
    		0.328"0.562"0.053" to 0.073"Not Rated180—NAS1515-H5White5000000000000000
    5/16"
    		0.328"0.562"0.084" to 0.104"Not Rated180—NAS1515-H5HWhite5000000000000000
    5/16"
    		0.355"0.708"0.040" to 0.065"Not Rated180MS51859-7—White500000000000000
    3/8"
    		0.390"0.625"0.021" to 0.041"Not Rated180—NAS1515-H6LWhite5000000000000000
    3/8"
    		0.390"0.625"0.053" to 0.073"Not Rated180—NAS1515-H6White5000000000000000
    3/8"
    		0.390"0.625"0.084" to 0.104"Not Rated180—NAS1515-H6HWhite5000000000000000
    3/8"
    		0.420"0.832"0.040" to 0.065"Not Rated180MS51859-8—White5000000000000000
    7/16"
    		0.453"0.750"0.021" to 0.041"Not Rated180—NAS1515-H7LWhite5000000000000000
    7/16"
    		0.453"0.750"0.053" to 0.073"Not Rated180—NAS1515-H7White5000000000000000
    7/16"
    		0.453"0.750"0.084" to 0.104"Not Rated180—NAS1515-H7HWhite5000000000000000
    7/16"
    		0.484"0.942"0.040" to 0.065"Not Rated180MS51859-9—White2500000000000000
    1/2"
    		0.515"0.875"0.021" to 0.041"Not Rated180—NAS1515-H8LWhite5000000000000000
    1/2"
    		0.515"0.875"0.053" to 0.073"Not Rated180—NAS1515-H8White5000000000000000
    1/2"
    		0.515"0.875"0.084" to 0.104"Not Rated180—NAS1515-H8HWhite5000000000000000
    1/2"
    		0.546"1.082"0.040" to 0.065"Not Rated180MS51859-10—White100000000000000
    1/2"
    		0.546"1.630"0.015" to 0.025"Not Rated180MS51859-22—White100000000000000
    9/16"
    		0.578"1.062"0.021" to 0.041"Not Rated180—NAS1515-H9LWhite250000000000000
    9/16"
    		0.578"1.062"0.053" to 0.073"Not Rated180—NAS1515-H9White250000000000000
    9/16"
    		0.578"1.062"0.084" to 0.104"Not Rated180—NAS1515-H9HWhite2500000000000000
    5/8"
    		0.640"1.188"0.021" to 0.041"Not Rated180—NAS1515-H10LWhite2500000000000000
    5/8"
    		0.640"1.188"0.053" to 0.073"Not Rated180—NAS1515-H10White2500000000000000
    5/8"
    		0.640"1.188"0.084" to 0.104"Not Rated180—NAS1515-H10HWhite100000000000000
    3/4"
    		0.765"1.312"0.021" to 0.041"Not Rated180—NAS1515-H12LWhite2500000000000000
    3/4"
    		0.765"1.312"0.053" to 0.073"Not Rated180—NAS1515-H12White2500000000000000
    3/4"
    		0.765"1.312"0.084" to 0.104"Not Rated180—NAS1515-H12HWhite100000000000000
    7/8"
    		0.890"1.500"0.021" to 0.041"Not Rated180—NAS1515-H14LWhite100000000000000
    7/8"
    		0.890"1.500"0.053" to 0.073"Not Rated180—NAS1515-H14White100000000000000
    7/8"
    		0.890"1.500"0.084" to 0.104"Not Rated180—NAS1515-H14HWhite100000000000000
    1"
    		1.015"1.750"0.021" to 0.041"Not Rated180—NAS1515-H16LWhite100000000000000
    1"
    		1.015"1.750"0.053" to 0.073"Not Rated180—NAS1515-H16White100000000000000
    1"
    		1.015"1.750"0.084" to 0.104"Not Rated180—NAS1515-H16HWhite1000000000000000
     
    Chemical-Resistant High-Temperature PTFE
    1/4"
    		0.265"0.500"0.057" to 0.075"Not Rated500—NAS1515-M4White50000000000000
    5/16"
    		0.328"0.562"0.057" to 0.075"Not Rated500—NAS1515-M5White50000000000000
    3/8"
    		0.390"0.625"0.057" to 0.075"Not Rated500—NAS1515-M6White500000000000000
    7/16"
    		0.453"0.750"0.057" to 0.075"Not Rated500—NAS1515-M7White500000000000000
    1/2"
    		0.515"0.875"0.057" to 0.075"Not Rated500—NAS1515-M8White500000000000000
    9/16"
    		0.578"1.062"0.057" to 0.075"Not Rated500—NAS1515-M9White500000000000000
    5/8"
    		0.640"1.188"0.057" to 0.075"Not Rated500—NAS1515-M10White500000000000000
    3/4"
    		0.765"1.312"0.057" to 0.075"Not Rated500—NAS1515-M12White500000000000000
    7/8"
    		0.890"1.500"0.057" to 0.075"Not Rated500—NAS1515-M14White500000000000000
    1"
    		1.015"1.750"0.057" to 0.075"Not Rated500—NAS1515-M16White500000000000000
     
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