External Tooth Lock Washer SEMS Screws

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When second sourcing PENCOM’s products, PENCOM recommends that the part is tested in the application to ensure that it will meet all performance requirements.

Dimensions

General
Thread H
Height
G
Washer Outside Diameter
W
Washer Thickness
Drive Size
Cross Recess
Drive Size
6 -Lobe
M2.5 x 0.45 1.8 / 1.66 5.85 / 5.45 .45 / .30 1 T8
M3 x 0.5 2.0 / 1.86 5.85 / 5.45 .45 / .30 1 T10
M3.5 x 0.6 2.4 / 2.26 7.35 / 6.85 .55 / .40 2 T15
M4 x 0.7 2.6 /2.46 8.25 / 7.75 .60 / .45 2 T20
M5 x 0.8 3.3 / 3.12 10.50 / 10.00 .65 / .50 2 T25
M6 x 1 3.9 / 3.6 12.10 / 11.60 .75 / .60 3 T30
M8 x 1.25 5.0 / 4.7 16.00 / 15.25 .85 / .70 4 T40
Length
Length L
(Length Code)
±0.13
3 3.2 / 2.8
4 4.3 / 3.7
5 5.0 / 4.2
6 6.0 / 5.2
8 8.0 / 7.2
10 10.3 / 9.7
12 12.4 / 11.6
14 14.4 / 13.6
16 16.4 / 15.6
20 20.5 / 19.5
25 25.5 / 24.5
30 30.5 / 29.5
35 35.5 / 34.5

Drives

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

Material & Finish

Material CodeMaterial DescriptionFinish CodeFinish Description
STLLow Carbon SteelZ-BLK Zinc Black
Z Zinc Clear
SSStainless SteelP Passivated
PLN Plain

Contact a PENCOM Account Representative for other material & finish options.