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APEX offers full-service design, engineering and manufacturing to your specifications. Our custom fasteners have enjoyed great success supplying all types and sizes of businesses in most sectors of industry.
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Locking/Sealing Washers

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Our lock washers are made of natural nylon 6/6. This washer's unique geometry creates an interference both on the OD of a hex nut, and on the ID on the shanks or thread of the screw. As the screw is tightened, the OD cold flows around the hex of a nut and the ID cold flows into the threads of the bolt or screw.

Product Number A T C B Screw Size Inch Screw Size Metric PART DESIGN D
PMPLSW030070070 7.000 1.400 0.700 3.100 #5 M3 A
PMPLSW060120160 12.000 4.000 1.600 6.100 N/A M6 A  
PMPLSW080158210 15.800 4.600 2.100 8.100 5/16 M8 A  
PMPLSW140252250 25.200 5.500 2.500 14.000 9/16 M14 A  
PMPLSW040090125 9.000 2.800 2.800 4.150 #8 M4 A  
PMPLSW100196210 19.600 5.300 2.100 10.000 3/8" M10 A  
PMPLSW132190250 19.000 4.500 2.500 13.200 *R 1/4" N/A B 12.200
PMPLSW048100150 10.000 3.200 1.500 4.800 N/A M4.8 B 4.140* (ref.)
PMPLSW080160160 16.000 3.100 1.600 8.200 N/A M8 B 7.010* (ref.)
PMPLSW060125150 12.500 2.800 1.500 6.300 N/A M6 B 4.950* (ref.)
PMPLSW103150200 15.000 4.000 2.000 10.300 *R 1/8" N/A B 9.450* (ref.)



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APEX FASTENERS, Inc - 15858 Business Center Drive - Irwindale, CA 91706 USA
APEX Fasteners supplies standard and custom screws, nut retainers, shoulder screws, plastites and taptites, all types of rivets, spring steel fasteners and special stampings, sems screws in standard, fractional or metric to electronics, aviation and other OEM industries worldwide. ApexFasteners.com custom manufactures screw machine components for electronic enclosure hardware as well as cold forming and cold headed specials for assembly and production requirements.
Tel: (626) 962-2219 - info@apexfasteners.com
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