Click Specification

(Non-preferred) dimensions in parentheses.

Hexagon Socket Cheese Head Screws

UNI 5931 - 1984

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Nominal Length L Tips:seclect Nominal Length L and get Thread length.

Thread Size
d

M10

M12

(M14)

M16

P	Coarse thread
	Fine thread
d_k	plain head	max
	knurled head	max
	min
d_s	max
	min
k	max
	min
s	Nominal Size
	min
	max
t	min

0.5	0.7	0.8	1	1.25	1.5	1.75	2	2
/	/	/	/	1	1.25	1.25	1.5	1.5
5.5	7	8.5	10	13	16	18	21	24
5.68	7.22	8.72	10.22	13.27	16.27	18.27	21.33	24.33
5.32	6.78	8.28	9.78	12.73	15.73	17.73	20.67	23.67
3	4	5	6	8	10	12	14	16
2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73
3	4	5	6	8	10	12	14	16
2.86	3.82	4.82	5.7	7.64	9.64	11.57	13.57	15.57
2.5	3	4	5	6	8	10	12	14
2.52	3.02	4.02	5.02	6.02	8.025	10.025	12.032	14.032
2.56	3.08	4.095	5.14	6.14	8.175	10.175	12.212	14.212
1.3	2	2.5	3	4	5	6	7	8

Length of Thread b

Thread Size
d

M18

M20

M22

M24

M27

M30

M33

M36

P	Coarse thread
	Fine thread
d_k	plain head	max
	knurled head	max
	min
d_s	max
	min
k	max
	min
s	Nominal Size
	min
	max
t	min

2.5	2.5	2.5	3	3	3.5	3.5	4
1.5	1.5	1.5	2	2	2	2	3
27	30	33	36	40	45	50	54
27.33	30.33	33.39	36.39	40.39	45.39	50.39	54.46
26.67	29.67	32.61	35.61	39.61	44.61	49.61	53.54
18	20	22	24	27	30	33	36
17.73	19.67	21.67	23.67	26.67	29.67	32.61	35.61
18	20	22	24	27	30	33	36
17.57	19.48	21.48	23.48	26.48	29.48	32.38	35.38
14	17	17	19	19	22	24	27
14.032	17.05	17.05	19.065	19.065	22.065	24.065	27.065
14.212	17.23	17.23	19.275	19.275	22.275	24.275	27.275
9	10	11	12	13.5	15.5	18	19

Length of Thread b

Suppliers

Best price if from GlobalFastener.com.

Shanghai ATM Precision Fastening Technology Co., Ltd.

Xu Hai
+86-18621311857
+86-21-59766477

Materials: 301, 302, 303, 304, 304L, 316, 316L, 316Ti, 317L, 310S, 321, 347, 1.4529, 1.4539, 1.4462, 1.4547, 1.4980, 904L, 2205, 2507, 2520, S32750, S32760, 1Cr13, 1Cr17, 2Cr13, 3Cr13, 14Cr17Ni2, 410, 416, 420, 430, 431, 440, 630, 631, 17-4PH, MP35N, 600, 601, 625, 660, 718, 750, 800, 825, 925, 926, C22, C276, A286, GH2132, GH4033, GH4080, GH4169, GH4145, 9C18Mo, 4Cr10Si2Mo, 35CrMoA, 42CrMoA, 40CrNiMoA, 25Cr2Mo1VA, SCM435, SCM440, 4130, 4140, 4145, A36, A307, A320, A325, A490, A574, F1554; stainless steel, alloy steel, titanium alloys, nickel-based alloys, high-temperature alloys, corrosion-resistant alloys, nickel-cobalt alloys, special alloys, and other special materials per customer specifications. Grades: A1-50, A2-50, A2-70, A2-80, A3-70, A4-70, A4-80, A4-90, A4-100, A5-80, B8, B8M, B8C, B8T, B6, B7, B7M, B16, C1-50, C1-70, C1-110, C3-80, C3-120, C4-70, D2-80, D2-100, D4-80, D4-100, D6-80, D6-100, D8-80, D8-100, P1-90, P1-120, F51, F53, F55, F60, 10.9, 12.9, 14.9, 15.9, 16.9; Other grades available upon request. Specifications: M3–M120, 1/4"–4". No limitation on product diameter or length; custom non-standard parts can be manufactured upon request. Surface Treatments: passivation, black oxide, phosphating, electrophoretic coating, zinc plating, nickel plating, chrome plating, cadmium plating, gold plating, silver plating, tin plating, copper plating, zinc diffusion, marine zinc, aluminum diffusion, aluminum spraying, Dacromet, Geomet, Teflon coating, zinc-nickel alloy plating, nickel-cobalt alloy plating, hot-dip galvanizing, ceramic composite coatings, molybdenum disulfide coating, tungsten disulfide coating, nano-coatings, and other surface finishes per customer requirements.

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