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M5X0.8 Hex Phillips SEMS Flat Washer - Stainless Steel + Black Oxide
Flat Washer Dimensions: Outer Diameter 12mm / Thickness 0.8mm
These SEMS screws have an indented hex head with a recessed phillips drive and a captive (permanently attached) flat washer. Length is measured from underneath the head, including the washer.
SEMS Design
The washer on this SEMS screw is free spinning. SEMS screws are common in the electronics industry but can be used in automotive, energy, industrial, machining, medical, architecture, agriculture, etc applications.
SEMS screws are beneficial for a variety of reasons: saving time by eliminating assembly of individual components, reducing loss of loose parts during assembly and compatibility with automated production equipment.
Also known as Cross Recessed Hexagon Head Bolt with captivated washer and phillips drive hex head SEMS screw
Stainless Steel + Black Oxide
- Abrasion resistant, does not peel, chip or rub off
- Reduces friction, prevents galling
- Does not change the strength of the stainless steel
- Practically no dimensional change to base fastener
- The spray applied during the coating process wears off over time, revealing an attractive matte black finish
The black oxide coating per MIL-DTL-13924, Class 4 on 300 series corrosion resistant steel meets 96 hours of resistance in a 5% salt spray (fog) test in accordance with ASTM B117. We recommend using stainless steel installation tools to prevent extraneous rust.
