Name: DIN 1587 Dome Nuts: Decorative & Protective Threaded Caps
Availability: InStock
Rating: 4.5 (89 reviews)

DIN 1587 Dome Nuts: Decorative & Protective Threaded Caps

Our DIN 1587 Acorn Nuts (also known as cap nuts or dome nuts) feature a rounded, domed top that completely covers the end of a bolt or threaded stud. This design provides a clean, finished appearance while protecting exposed threads from damage, dirt, and corrosion. Manufactured to strict DIN 1587 standards, these nuts are the professional choice for visible fastening applications.

Description

Product Details

Name	Dome Nuts	Materials	Carbon Steel/Stainless Steel
Standards	DIN1587	Grade	4 8 10 12 A2-70 A4-70 A4-80
Mechanical Properties	ISO 898-2	Threads	Metric coarse thread
Size	M4-M24	Surface finish	ZP\HDG\BLACK\Dacromet etc.
Length	/	Samples	Available

Product Parameters

Thread Size			M4	M5	M6	M8	M10	M10	M12	M12
d			M4	M5	M6	M8	M10	M10	M12	M12
P	Seriers 1	Coarse thread	0.7	0.8	1	1.25	1.5	1.5	1.75	1.75
	Seriers 2	Fine thread	/	/	/	1	1	1	1.5	1.5
	Seriers 1	Fine thread	/	/	/	/	1.25	1.25	1.25	1.25
da	min		4	5	6	8	10	10	12	12
da	max		4.6	5.75	6.75	8.75	10.8	10.8	13	13
dk	max		6.5	7.5	9.5	12.5	16	15	18	17
dw	min		5.8	6.8	8.3	11.3	15.3	14.3	17.2	16.2
e	min	Grade A	7.66	8.79	11.05	14.38	18.9	17.77	21.1	20.03
e	min	Grade B	7.5	8.63	10.89	14.2	18.72	17.59	20.88	19.85
x	max	Seriers 1	1.4	1.6	2	2.5	3	3	/	/
		Seriers 2	/	/	/	2	2	2	/	/
		Seriers 3	/	/	/	/	2.5	2.5	/	/
G	max	Seriers 1	/	/	/	/	/	/	6.4	6.4
		Seriers 2	/	/	/	/	/	/	5.6	5.6
		Seriers 3	/	/	/	/	/	/	4.9	4.9
h	max=nominal size		8	10	12	15	18	18	22	22
	min	Grade A	7.64	9.64	11.57	14.57	17.57	17.57	21.48	21.48
	min	Grade B	7.42	9.42	11.3	14.3	17.3	17.3	21.16	21.16
m	max		3.2	4	5	6.5	8	8	10	10
m	min		2.9	3.7	4.7	6.14	7.64	7.64	9.64	9.64
mw	min		2.32	2.96	3.76	4.91	6.11	6.11	7.71	7.71
SR	≈		3.25	3.75	4.75	6.25	8	7.5	9	8.5
s	max=nominal size		7	8	10	13	17	16	19	18
	min	Grade A	6.78	7.78	9.78	12.73	16.73	15.73	18.67	17.73
	min	Grade B	6.64	7.64	9.64	12.57	16.57	15.57	18.48	17.57
t	min		5.26	7.21	7.71	10.65	12.65	12.65	15.65	15.65
t	max		5.74	7.79	8.29	11.35	13.35	13.35	16.35	16.35
w	min		2	2	2	2	2	2	3	3
per 1000 units≈kg			/	/	4.66	11	20.1	/	28.3	/
Thread Size			(M14)	M14	M16	(M18)	M20	(M22)	(M22)	M24
d			(M14)	M14	M16	(M18)	M20	(M22)	(M22)	M24
P	Seriers 1	Coarse thread	2	2	2	2.5	2.5	2.5	2.5	3
	Seriers 2	Fine thread	1.5	1.5	1.5	1.5	2	2	1.5	2
	Seriers 1	Fine thread	/	/	/	2	1.5	1.5	2	/
da	min		14	14	16	18	20	22	22	24
da	max		15.1	15.1	17.3	19.5	21.6	23.7	23.7	25.9
dk	max		21	20	23	26	28	31	33	34
dw	min		20.2	19.2	22.2	25.3	28.3	29.5	31.4	33.2
e	min	Grade A	24.49	23.35	26.75	30.14	33.53	35.72	37.72	39.98
e	min	Grade B	23.91	22.78	26.17	29.56	32.95	35.03	37.29	39.55
x	max	Seriers 1	/	/	/	/	/	/	/	/
		Seriers 2	/	/	/	/	/	/	/	/
		Seriers 3	/	/	/	/	/	/	/	/
G	max	Seriers 1	7.3	7.3	7.3	9.3	9.3	9.3	9.3	10.7
		Seriers 2	5.6	5.6	5.6	5.6	7.3	5.6	5.6	7.3
		Seriers 3	/	/	/	7.3	5.6	7.3	7.3	/
h	max=nominal size		25	25	28	32	34	39	39	42
	min	Grade A	24.48	24.48	27.48	31.38	33.38	38.38	38.38	41.38
	min	Grade B	24.16	24.16	27.16	31	33	38	38	41
m	max		11	11	13	15	16	18	18	19
m	min		10.3	10.3	12.3	14.3	14.9	16.9	16.9	17.7
mw	min		8.24	8.24	9.84	11.44	11.92	13.52	13.52	14.16
SR	≈		10.5	10	11.5	13	14	15.5	16.5	17
s	max=nominal size		22	21	24	27	30	32	34	36
	min	Grade A	21.67	20.67	23.67	26.67	29.67	31.61	33.38	35.38
	min	Grade B	21.16	20.16	23.16	26.16	29.16	31	33	35
t	min		17.65	17.65	20.58	24.58	25.58	28.58	28.58	30.5
t	max		18.35	18.35	21.42	25.42	26.42	29.42	29.42	31.5
w	min		4	4	4	5	5	5	5	6
per 1000 units≈kg			57.2	/	54.3	95	104	129	/	216

Key Features & Benefits

l Clean, Finished Look: The smooth domed top conceals bolt ends, providing a professional, aesthetic appearance

l Thread Protection: Seals exposed threads from dirt, moisture, and mechanical damage

l Safety Enhancement: Eliminates sharp or protruding bolt ends – reduces injury risk

l Corrosion Resistant: Available in zinc plated, hot-dip galvanized, and stainless steel

l High Strength: Manufactured from carbon steel or stainless steel with reliable mechanical properties

Intended Applications

l Furniture & Fixtures: Exposed bolt ends on chairs, tables, shelving

l Automotive: Wheel covers, trim, engine bay components

l Machinery: Safety guards, control panels, equipment housings

l Architectural: Railings, handrails, structural glass fittings

l General Assembly: Any application requiring a finished appearance

Installation Guidelines

1. Thread nut onto bolt or stud until the domed top contacts or slightly compresses against the workpiece

2. Hand-tighten then use appropriate wrench for final torque

3. Do not over-tighten – acorn nuts have shorter thread engagement than standard nuts

Why Choose Our DIN 1587 Dome Nuts?

l Standards compliant – Full DIN 1587 dimensional accuracy

l Wide range – M3 to M24 in multiple materials and finishes

l Quality assured – Rigorous testing; certifications available upon request

l Competitive pricing – Direct sourcing with reliable supply

About Us

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Production Process

Customers

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