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Button Head Screws

What is a button head screw, and how does it differ from other types of screws?

A button head screw is a fastener characterized by its rounded, low-profile head with a smooth and slightly domed surface. Unlike traditional screws with flat or countersunk heads, the button head screw's design offers a more aesthetically pleasing appearance when installed, as the head sits flush or slightly raised on the surface. This feature makes Button Head Screws particularly suitable for applications with a desired clean and sleek finish.

The rounded head shape distributes pressure evenly, reducing the risk of damage to delicate materials or surfaces during fastening. Compared to other screw types, such as flat head or Pan Head Screws, button head screws offer unique visual and functional advantages, making them a popular choice for various projects, ranging from automotive and electronics to furniture assembly and general construction.

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Table Of Content

About Button Head Screws

Button Head Screws Specification

Stock Availability of Button Head Screws

Button Head Screws Ready Stock

Button Head Screws Applications and Uses

Supply & Export Destinations of Button Head Screws

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What are the typical applications and industries that commonly use button head screws?

Button head screws find widespread use across various industries and applications due to their unique design and functionality. In the automotive industry, they are commonly employed for assembling interior components, engine parts, and electronic systems. Their low-profile head and sleek appearance make them ideal for electronics, where they are used to secure circuit boards, panels, and sensitive equipment. In furniture and woodworking, Button Head Screws are favored for joining pieces together, providing a neat finish without compromising strength.

They are also extensively utilized in the aerospace and marine industries, where their corrosion-resistant materials ensure durability in harsh environments. Button head screws are prevalent in machinery and equipment manufacturing, facilitating secure and efficient assembly processes. Thanks to their versatility and adaptability, button head screws are popular for precision applications, DIY projects, and numerous other fields that demand reliable and visually appealing fastening solutions.

Button Head Screws Specification

Size Range:	M3 to M12
Dimensional Standards	ISO 7380, DIN9427, BS 4168, ASME B18.3.4M
Length	12mm, 25mm, 35mm, 10mm
Screws Types	Button Head Screws
Tolerance	+/-0.01mm to +/-0.05mm
Threads	METRIC, BSW, BSF, UNC, UNF or as required
UTS – Unified Thread Standard	UNC, UNF, UNEF, UNS, NPT, NPTF
Application	Wind Tower, Nuclear Power, Railway, Automotive Industry, Construction, Electronic Industry
Screws Packaging	Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector
Screws Forming	Hot Forged & Cold Forged
Certification	Dual Certified As per ASTM & ASME Codes

Button Head Screws Stock Availability

Stainless Steel Button Head Screws

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Carbon Steel Button Head Screws

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Alloy Steel Button Head Screws

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MS Button Head Screws, DIN 9427 Stainless Steel Button Head Screws, Alloy Steel Button Head Screw Latest Price, Button Head Screws Full Thread, LTCS Button Head Screws, Button Head Cap Screw Stockist In Mumbai.

“View Button Head Screw Dimensions, Contact us today to know Button Head Cap Screw best offers & prices.”

Price List

Dimensions Chart

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Button Head Screw Dimensions

Thread d		M3	M4	M5	M6	M8	M10	M12	M16
P		0,5	0,7	0,8	1	1,25	1,5	1,75	2
b	ref.	18	20	22	24	28	32	36	44
c	max.	0,7	0,8	1	1,2	1,5	2	2,4	2,8
c	min.	0,55	0,65	0,8	1	1,25	1,7	2,1	2,5
da	max.	3,6	4,7	5,7	6,8	9,2	11,2	13,7	17,7
dc	max.	6,9	9,4	11,8	13,6	17,8	21,9	26	34
dc	min.	6,32	8,82	11,1	12,9	17,1	21,06	25,16	33
dk	max.	5,2	7,2	8,8	10	13,2	16,5	19,4	26
dk	min.	4,9	6,8	8,4	9,6	12,8	16,1	18,9	25,5
dL	ref.	2,6	3,8	5	6	7,7	10	12	16
ds	max.	3	4	5	6	8	10	12	16
ds	min.	2,86	3,82	4,82	5,82	7,78	9,78	11,73	15,73
dw	min.	5,74	8,24	10,4	12,2	16,4	20,22	24,32	32
e	min.	2,303	2,873	3,443	4,583	5,723	6,863	9,149	11,429
k	max.	1,65	2,2	2,75	3,3	4,4	5,5	6,6	8,8
k	min.	1,4	1,95	2,5	3	4,1	5,2	6,24	8,44
r1	max.	3,7	4,6	5,75	6,15	7,95	9,8	11,2	15,3
r1	min.	3,3	4,2	5,25	5,65	7,45	9,2	10,5	14,5
rs	min.	0,1	0,2	0,2	0,25	0,4	0,4	0,6	0,6
rt	min.	0,3	0,4	0,45	0,5	0,7	0,7	1,1	1,1
s	nom.	2	2,5	3	4	5	6	8	10
	max.	2,08	2,58	3,08	4,095	5,14	6,14	8,175	10,175
	min.	2,02	2,52	3,02	4,02	5,02	6,02	8,025	10,025
t	min.	1,04	1,3	1,56	2,08	2,6	3,12	4,16	5,2
w	min.	0,2	0,3	0,38	0,74	1,05	1,45	1,63	2,25

Thread d			M3		M4		M5		M6		M8		M10		M12		M16
l			ls and fg
l			ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg
nom.	min.	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.
6	5,76	6,24	+	+	+	+
8	7,71	8,29	+	+	+	+	+	+
10	9,71	10,29	+	+	+	+	+	+	+	+
12	11,65	12,35	+	+	+	+	+	+	+	+	+	+
16	15,65	16,35	+	+	+	+	+	+	+	+	+	+	+	+
20	19,58	20,42	+	+	+	+	+	+	+	+	+	+	+	+	+	+
25	24,58	25,42	4,5	7	+	+	+	+	+	+	+	+	+	+	+	+	+	+
30	29,58	30,42	9,5	12	6,5	10	4	8	+	+	+	+	+	+	+	+	+	+
35	34,5	35,5			11,5	15	9	13	6	11	+	+	+	+	+	+	+	+
40	39,5	40,5			16,5	20	14	18	11	16	5,75	12	+	+	+	+	+	+
45	44,5	45,5					19	23	16	21	10,75	17	5,5	13	+	+	+	+
50	49,5	50,5					24	28	21	26	15,75	22	10,5	18	+	+	+	+
55	54,4	55,6							26	31	20,75	27	15,5	23	10,25	19	+	+
60	59,4	60,6							31	36	25,75	32	20,5	28	15,25	24	+	+
65	64,4	65,6									30,75	37	25,5	33	20,25	29	11	21
70	69,4	70,6									35,75	42	30,5	38	25,25	34	16	26
80	79,4	80,6									45,75	52	40,5	48	35,25	44	26	36
90	89,4	90,6											50,5	58	45,25	54	36	46

Button Head Screw Size Chart

inal Size	A		H		S	J	T	F		L	Tensile Test Load	Single Shear Strength of Body	Seating Torques in./lbs.
	Head Diameter		Head Height		Head Side Height	Hex Socket Size	Key Engage- ment	Fillet Transition Diameter		Max Standard Length
	Max	Min	Max	Min	Ref	Nom	Min	Max	Min	Nom	Lb.	Lbs., Min.	Coarse Thread	Fine Thread
4	0.213	0.201	0.059	0.051	0.015	1/16	0.035	0.132	0.122	0.50	840	950	7.0	8.
6	0.262	0.250	0.073	0.063	0.015	5/64	0.044	0.158	0.148	0.63	1,260	1,400	13.	15.
8	0.312	0.298	0.087	0.077	0.015	3/32	0.052	0.194	0.184	0.75	1,940	2,000	25.	26.
10	0.361	0.347	0.101	0.091	0.020	1/8	0.070	0.220	0.210	1.00	2,440	2,700	45.	48.
1/4	0.437	0.419	0.132	0.122	0.031	5/32	0.087	0.290	0.280	1.00	4,430	4,700	95.	110.
5/16	0.547	0.527	0.166	0.152	0.031	3/16	0.105	0.353	0.343	1.00	7,300	7,300	190.	210.
3/8	0.656	0.636	0.199	0.185	0.031	7/32	0.122	0.415	0.405	1.25	10,800	10,600	300.	300.
1/2	0.875	0.851	0.265	0.245	0.046	5/16	0.175	0.560	0.540	2.00	19,800	18,800	900.	960.
5/8	1.000	0.970	0.331	0.311	0.062	3/8	0.210	0.685	0.665	2.00	31,500	29,400	1,700	1,900

Tolerance on Length			Nominal Screw Size				Nominal Screw Length
			Nominal Screw Size				Up to 1 in., Inclusive				Over 1 in. to 2-1/2 in., Inclusive
			0 thru 3/8, Inclusive				-0.03				-0.04
			1/2 and 5/8, Inclusive				-0.03				-0.06

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Button Head Screws Applications and Uses

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What is a button head screw?

A button head screw is a type of fastener with a low-profile, rounded, and slightly domed head. The head of the screw is typically wider and taller than a flat head screw, but it is not as tall as a traditional socket cap or hex head screw. The shape of the head resembles a button, which is how it got its name.

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