Hexagon Socket Head Shoulder Screws

Designed for precise alignment and rotation in assembly, these screw hexagonal socket head unibody shoulders provide both tightening and bearing functions.

Product Technical Parameters

●Material: Carbon Steel and Stainless Steel
●Head: knurled or Smooth head
●Surface Treatment: Galvanized, Nickel Plated, Black Oxide
●Metric Strength Grades: 4.8, 8.8, 10.9, 12.9	●Imperial Strength Grades: 2, 5, 8
●Metric Thread Diameter: M5 ~ M20	●Imperial Thread Diameter: 1/8 ~ 1
●Metric Shoulder Length: 4 ~ 200	●Imperial Shoulder Length: 1/8 ~ 8

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Product Description of Hexagon Socket Head Shoulder Screws

Function and use: The shaft shoulder provides precise positioning for controlled rotation or sliding of components, while the hex socket head ensures high torque tightening.
Applications: It is widely used in mechanical assembly, robots, fixture and other fields, requiring accurate alignment and repeatable movement.
Needs solved: Screws facilitate accurate positioning, reduce wear, and simplify assembly in applications that require both tightening and bearing capacity.

Wanhong Fasteners supply high quality hexagon socket head shoulder screws, various sizes and materials, suitable for a wide range of industrial needs.

Data Sheet of Hexagon Socket Head Shoulder Screws

Hexagon socket head shoulder screws Dimensions Chart: Based on ISO 7379

(mm)	M5	M6	M8	M10	M12	M16	M20
d	φ6.5	φ8	φ10	φ13	φ16	φ20	φ25
d max	6.487	7.987	9.987	12.984	15.984	19.98	24.98
d min	6.451	7.951	9.951	12.941	15.941	19.928	24.928
P	0.8	1	1.25	1.5	1.75	2	2.5
b max	9.75	11.25	13.25	16.4	18.4	22.4	27.4
b min	9.25	10.75	12.75	15.6	17.6	21.6	26.6
dk max	10	13	16	18	24	30	36
dk min	9.78	12.73	15.73	17.73	23.67	29.67	35.61
d2 max	3.86	4.58	6.25	7.91	9.57	13.33	16.57
d2 min	3.68	4.4	6.03	7.69	9.35	12.96	16.3
e min	3.44	4.58	5.72	6.86	9.15	11.43	13.72
k max	4.5	5.5	7	9	11	14	16
k min	4.32	5.32	6.78	8.78	10.73	13.73	15.73
a max	2	2.5	3.1	3.7	4.4	5	6.3
s max	3.08	4.095	5.095	6.095	8.115	10.115	12.142
s min	3.02	4.02	5.02	6.02	8.025	10.025	12.032
t min	2.4	3.3	4.2	4.9	6.6	8.8	10

Hexagon socket head shoulder screws Dimensions Chart: Based on ASME/ANSI B18.3-Table 13-2017

(inch)	1/8	5/32	3/16	1/4	5/16	3/8	1/2	5/8	3/4	1
d max	0.123	0.154	0.185	0.248	0.3105	0.373	0.498	0.623	0.748	0.998
d min	0.121	0.152	0.183	0.246	0.3085	0.371	0.496	0.621	0.746	0.996
dk max	0.25	0.281	0.312	0.375	0.438	0.562	0.75	0.875	1	1.312
dk min	0.235	0.266	0.296	0.357	0.419	0.543	0.729	0.853	0.977	1.287
k max	0.125	0.125	0.156	0.188	0.219	0.25	0.312	0.375	0.5	0.625
k min	0.115	0.115	0.146	0.177	0.209	0.24	0.302	0.365	0.49	0.61
S	0.078	0.094	0.094	0.125	0.156	0.188	0.25	0.312	0.375	0.5
t min	0.067	0.067	0.079	0.094	0.117	0.141	0.188	0.234	0.281	0.375
d1	#4	#6	#8	#10	1/4	5/16	3/8	1/2	5/8	3/4
P	40 UN	32 UN	32 UN	24 UN	20 UN	18 UN	16 UN	13 UN	11 UN	10 UN
d2 max	0.076	0.1	0.12	0.142	0.193	0.249	0.304	0.414	0.521	0.638
d2 min	0.069	0.093	0.112	0.133	0.182	0.237	0.291	0.397	0.502	0.616
a max	0.078	0.063	0.069	0.083	0.1	0.111	0.125	0.154	0.182	0.2