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Button Head Socket Bolt

Button head socket cap screws are also known as round head or dome head socket screws. They are manufactured with a smooth, slightly rounded dome at the head, which tends to be somewhat larger and more bulbous than standard cap screw varieties.

Often, this means that a button head socket screw can accommodate a larger gauge of hex key or driver, and thus can be affixed with more torque to achieve greater clamping forces.


Button head socket bolts, also known as round head or dome head socket screws, feature a smooth, slightly rounded dome at the head, making them 
larger and more bulbous compared to standard cap screws. This design allows for the accommodation of a larger gauge hex key or driver, enabling the application of greater torque and achieving superior clamping forces. Ideal for applications requiring enhanced strength and a sleek appearance, Pankaj International offers high-quality button head socket bolts engineered for durability and performance. As a leading fasteners manufacturer in Ludhiana, India, we provide reliable solutions for various industrial needs.

Size Range
Diameter M8 to M22
Length 50mm to 175mm
Technical Specifications
dPbds (max)ds (min)dk ((max)dk (min)k (max)k (min)s (Nom)s (max)s (min)t (min)
M 30.51832.865.75.41.651.4022.0802.0201.04
M 40.72043.827.607.242.201.952.52.582.521.3
M 50.82254.829.509.142.752.5033.0803.0201.56
M 612465.8210.5010.073.33.044.0954.0202.08
M 81.252887.7814.0013.574.44.155.1405.0202.6
M 101.532109.7817.5017.075.55.266.1406.0203.12
M 121.75361211.7321.0020.486.606.2488.1758.0254.16
M 162441615.7328.0027.488.808.441010.17510.0255.2

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Pankaj International is an ISO Certified Nationwide Manufacturer of Stocked and Custom Nuts, Bolts and Fasteners

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