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Metric Thread A4 Socket Button Head Screws
Hexagon button socket screws feature a low profile, rounded, dome-shaped head with a hexagon drive, used when you need a wider bearing surface.

Our RS metric thread button head screws are made from A4 (316) grade stainless steel, providing exceptional resistance to corrosion. The screws are an excellent choice in higher corrosive and chemical environments, including contact with dilute sulfuric acid, acetic acid and marine environments.
Standards:
Threaded in accordance with ISO 7380 standard

Brand/Series	778971 Series
Finish	Plain
Head Shape	Hex Socket Button
Length	0.629" (16mm)
Material	Stainless Steel
Size, Thread	M4
Specification	ISO 7380
Thread Type	Metric
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Brand/Series 778971 Series  RS Pro Brand/Series 778971 Series  Screws Brand/Series 778971 Series  RS Pro Screws Brand/Series 778971 Series   Finish Plain  RS Pro Finish Plain  Screws Finish Plain  RS Pro Screws Finish Plain   Head Shape Hex Socket Button  RS Pro Head Shape Hex Socket Button  Screws Head Shape Hex Socket Button  RS Pro Screws Head Shape Hex Socket Button   Length 0.629" (16mm)  RS Pro Length 0.629" (16mm)  Screws Length 0.629" (16mm)  RS Pro Screws Length 0.629" (16mm)   Material Stainless Steel  RS Pro Material Stainless Steel  Screws Material Stainless Steel  RS Pro Screws Material Stainless Steel   Size, Thread M4  RS Pro Size, Thread M4  Screws Size, Thread M4  RS Pro Screws Size, Thread M4   Specification ISO 7380  RS Pro Specification ISO 7380  Screws Specification ISO 7380  RS Pro Screws Specification ISO 7380   Thread Type Metric  RS Pro Thread Type Metric  Screws Thread Type Metric  RS Pro Screws Thread Type Metric