Internal Tooth Lock Washer SEMS Screws

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Dimensions

General
Thread H
Height
G
Washer Outside Diameter
W
Washer Thickness
Drive Size
Cross Recess
Drive Size
6 -Lobe
2 – 56 .062 / .053 .185 / .175 .016 / .010 1 T7
4 – 40 .080 / .070 .268 / .258 .018 / .012 1 T10
6 – 32 .097 / .087 .288 / .278 .022 / .016 2 T15
8 – 32 .115 / .105 .338 / .327 .023 / .018 2 T20
10 – 32 .133 / .122 .383 / .372 .024 / .018 2 T25
1/4 – 20 .175 / .162 .478 / .466 .028 / .023 3 T30
Length
Length L
(Length Code)
±.005
1/8 .125 / .105
3/16 .187 / .167
1/4 .250 / .230
5/16 .313 / .293
3/8 .375 / .355
7/16 .438 / .418
1/2 .500 / .480
9/16 .563 / .533
5/8 .625 / .595
3/4 .750 / .720
7/8 .875 / .845
1 1.000 / .970
1 – 1/4 1.250 / 1.190
1 – 3/8 1.375 / 1.315
1 – 1/2 1.500 / 1.440
1 – 5/8 1.625 / 1.565
1 – 3/4 1.750 / 1.690
1 – 7/8 1.875 / 1.815
2 2.000 / 1.940

Drives

DriveDescription
TX6 - Lobe
PHCross Recess
SLSlotted
SL-TXSlotted - 6 - Lobe
SL-PHSlotted - Cross Recess

Material & Finish

Material CodeMaterial DescriptionFinish CodeFinish Description
STLLow Carbon Steel (STL)Z-BLK Zinc Black
Z Zinc Clear
SSStainless SteelP Passivated
PLN Plain

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