Class 2/5/8 Round Head Square Neck Carriage Bolts

• Customization: Available
• Material: High Strength Steel
• Type: Round Head
• Model NO.: 1/4′′ to 5/8′′
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, ASME
• Grade: 2/5/8, or F593c
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Blue-White Zinc Plated
• Exterior Finish: Plain/Zinc/Black/Decromet
• Quality Certifications: ISO9001, IATF16949
• Sample: Free
• Customized: OEM/ODM
• Transport Package: Cartons + Pallets
• Specification: 1/4′′ to 5/8′′
• Trademark: JX
• Origin: Hangzhou/China
• HS Code: 7318150000
• Production Capacity: 2000 Tons Per Quarter
• Package Size: 26.00cm * 26.00cm * 14.00cm
• Package Gross Weight: 22.000kg

Product Description

Round Head Square Neck Bolt / Carriage Bolt

A carriage bolt (also called coach bolt and round-head square-neck bolt) is a type of bolt. It is also known as a cup head bolt in Australia and New Zealand.

It is distinguished from other bolts by its shallow mushroom head and the fact that the cross-section of the shank, though circular for most of its length (as in other kinds of bolt), is square immediately beneath the head.^[2] This makes the bolt self-locking when it is placed through a square hole in a metal strap. This allows the fastener to be installed with only one wrench, working from the opposite end. The head of a carriage bolt is usually a shallow dome. The shank has no threads and its diameter equals the size of the square cross-section.

The carriage bolt was devised for use through an iron strengthening plate on either side of a wooden beam, the squared part of the bolt fitting into a square hole in the ironwork. It is common to use a carriage bolt on bare timber, the square section giving enough grip to prevent rotation.
 

Standard	ANSI/ASME B18.5/DIN603
Strength Grade	Gr 2/5/8; Gr 4.8/8.8/10.9; A2-70, A4-70
Material	Q195/35K/10B21/40CR/Stainless Steel 304/316
Size	Dia 1/4''-1'', M5-M20, or customized
Exterior Finish	Plain/Zinc/Black/Decromet
Package	Cartons + pallets, or customized

DIN 603

Thread d		M5	M6	M8	M10	M12	M16	M20
P		0,8	1	1,25	1,5	1,75	2	2,5
b	l < 125mm	16	18	22	26	30	38	46
	125 < l < 200mm	22	24	28	32	36	44	52
	l > 200mm	-	-	41	45	49	57	65
dk	max.	13,55	16,55	20,65	24,65	30,65	38,8	46,8
	min.	12,45	15,45	19,35	23,35	29,35	37,2	45,2
ds	max.	5	6	8	10	12	16	20
	min.	4,52	5,52	7,42	9,42	11,3	15,3	19,16
f	max.	4,1	4,6	5,6	6,6	8,75	12,9	15,9
	min.	2,9	3,4	4,4	5,4	7,25	11,1	14,1
k	max.	3,3	3,88	4,88	5,38	6,95	8,95	11,05
	min.	2,7	3,12	4,12	4,62	6,05	8,05	9,95
r1	approx.	10,7	12,6	16	19,2	24,1	29,3	33,9
r2	max.	0,5	0,5	0,5	0,5	1	1	1
r3	max.	0,75	0,9	1,2	1,5	1,8	2,4	3
v	max.	5,48	6,48	8,58	10,58	12,7	16,7	20,84
	min.	4,52	5,52	7,42	9,42	11,3	15,3	19,16

ASME B18.5

Nominal Size or Basic Diameter		E		A		H		J		T		U
		Body Diameter		Head Diameter		Head Height		Slot Width		Slot Depth		Fillet Radius
		Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1/4''	0.2500	0.2500	0.2450	0.4370	0.4180	0.1910	0.1750	0.0750	0.0640	0.1170	0.0970	0.0310	0.0160
5/16''	0.3125	0.3125	0.3070	0.5620	0.5400	0.2450	0.2260	0.0840	0.0720	0.1510	0.1260	0.0310	0.0160
3/8''	0.3750	0.3750	0.3690	0.6250	0.6030	0.2730	0.2520	0.0940	0.0810	0.1680	0.1380	0.0310	0.0160
7/16''	0.4375	0.4375	0.4310	0.7500	0.7250	0.3280	0.3020	0.0940	0.0810	0.2020	0.1670	0.0470	0.0160
1/2''	0.5000	0.5000	0.4930	0.8120	0.7860	0.3540	0.3270	0.1060	0.0910	0.2180	0.1780	0.0470	0.0160
9/16''	0.5625	0.5625	0.5550	0.9370	0.9090	0.4090	0.3780	0.1180	0.1020	0.2520	0.2070	0.0470	0.0160
5/8''	0.6250	0.6250	0.6170	1.0000	0.9700	0.4370	0.4050	0.1330	0.1160	0.2700	0.2200	0.0620	0.0310
3/4''	0.7500	0.7500	0.7420	1.2500	1.2150	0.5460	0.5070	0.1490	0.1310	0.3380	0.2780	0.0620	0.0310

 

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