Socket screw is a screw which is widely used in the industrial sector and assembly lines. Known by many names but the most common are Hex or Allen head screws. They are widely used because they are some of the strongest screws available (link to Tensile Strength and Torque specification chart), inexpensive, and very easy install using a hexagonal shaped wrench. This makes them ideal for many applications where space is an issue. Socket screws are found in various grades of Steel, Stainless Steel and Marine Grade Stainless Steel options.

Nom.Size Thread Pitch	Body Diameter(D)	Head Diameter(A)	Head Height(H)	Chamfer(S)	Hexagon Socket Size(J)	Spline Socket Size(M)	Key Engagment(T)	Transition Dia.(B)
M1.6x0.35	1.46-1.60	2.87-3.00	1.52-1.60	0.16	1.5	1.829	0.80	2.0
M2x0.4	1.86-2.00	3.65-3.80	1.90-2.00	0.20	1.5	1.829	1.00	2.6
M2.5x0.45	2.36-2.50	4.33-4.50	2.40-2.50	0.25	2.0	2.438	1.25	3.1
M3x0.5	2.86-3.00	5.32-5.50	2.89-3.00	0.30	2.5	2.819	1.50	3.6
M4x0.7	3.82-4.00	6.80-7.00	3.88-4.00	0.40	3.0	3.378	2.00	4.7
M5x0.8	4.82-5.00	8.27-8.50	4.86-5.00	0.50	4.0	4.648	2.50	5.7
M6x1	5.82-6.00	9.74-10.00	5.85-6.00	0.60	5.0	5.486	3.00	6.8
M8x1.25	7.78-8.00	12.70-13.00	7.83-8.00	0.80	6.0	7.391	4.00	9.2
M10x1.5	9.78-10.00	15.67-16.00	9.81-10.00	1.00	8.0	...	5.00	11.2
M12x1.75	11.73-12.00	17.63-18.00	11.79-12.00	1.20	10.0	...	6.00	14.2
M14x2b	13.73-14.00	20.60-21.00	13.77-14.00	1.40	12.0	...	7.00	16.2
M16x2	15.73-16.00	23.59-24.00	15.76-16.00	1.60	14.0	...	8.00	18.2
M20x2.5	19.67-20.00	29.53-30.00	19.73-20.00	2.00	17.0	...	10.00	22.4
M24x3	23.67-24.00	35.48-36.00	23.70-24.00	2.40	19.0	...	12.00	26.4
M30x3.5	29.67-30.00	44.42-45.00	29.67-30.00	3.00	22.0	...	15.00	33.4
M36x4	35.61-36.00	53.37-54.00	35.64-36.00	3.60	27.0	...	18.00	39.4
M42x4.5	41.61-42.00	62.31-63.00	41.61-42.00	4.20	32.0	...	21.00	45.6
M48x5	47.61-48.00	71.27-72.00	47.58-48.00	4.80	36.0	...	24.00	52.6

Socket Screws

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