ANSI/ASME Grade 2/5/8 Round Head Square Neck Carriage Bolts

• Material: Stainless Steel
• Type: Round Head
• Connection: Common Bolt
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 1/4′′ to 3/4′′
• Head Style: Round
• Standard: DIN, ANSI, GB, JIS, BSW
• Grade: 2/5/8
• Application: Machinery, Chemical Industry, Environmental
• Finish: Original Colar
• Certificate: SGS, ISO9001.IATF16949
• Model No.: ANSI/ASME B18.5
• Average Lead Time: Peak Season Lead Time: One Month off Season Lead
• Capacity: The Monthly Output Is 200,000 Units
• Transport Package: Cartons+Plastic Bags
• Specification: 1/4′′ to 5/8′′
• Trademark: JX
• Origin: Hangzhou Zhejiang
• HS Code: 7318150000
• Production Capacity: 2000 Tons Per Quarter
• Package Size: 26.00cm * 26.00cm * 14.00cm
• Package Gross Weight: 20.000kg

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
Material	Q195/35K/10B21/40CR/Stainless Steel 304
Size	Dia 1/4''-1'', M5-M20, or customized
Exterior Finish	Plain/Zinc/Black/Decromet
Package	Bulk in carton, small box, or customized

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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