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M4 Button Socket Head

Stainless + Black Oxide

ISO 7380-1

SKU: 00-SB4-BLKSS
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Detail & Specs

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M4 Metric Allen Socket Button Head Bolt, Black Stainless Steel
Button head cap screws are great for limited space installation areas. Use an allen wrench to install these screws.


The slim design of an allen socket wrench allows access to tight locations where a traditional external hex drive bolt would not fit. The smooth head design gives a neat, professional finish free from sharp edges, great for furniture an automotive applications.


These bolts can be used with many different styles of locking and non-locking nuts, tightly clamping together whatever the cap screw is being used to secure.


Material: Stainless Steel A2
Suitable for damp locations
Corrosion resistant


Finish: Black Oxide
Attractive matte black finish
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 black oxide coating per MIL-DTL-13924, Class 4 on 300 series corrosion resistant steel will show no signs of corrosion after 96 hours of exposure in a 5% salt spray (fog) test in accordance with ASTM B117.


For any application involving marine (salt water), use A4 / 316 Stainless Steel material, available as a BULK special order.


Also known as allen cap screw, hex drive screw, socket head bolt, hexagon socket head cap screw. Cylindrical head screw meant to be used with an allen wrench.