DIN603 & GB 4.8/ 8.8 Coach Bolt /10.9s Hot-DIP Galvanized Carriage Bolts

• Material: High Strength Steel
• Type: Round Head
• Connection: Hinged Bolts
• Head Style: Round
• Standard: DIN, ANSI, GB, JIS
• Grade: 12.9
• Model NO.: can customize
• Application: Machinery, Chemical Industry, Environmental, Building
• Performance: 4.8 / 6.8 /8.8 /10.9 / 12.9 Grade
• Surface Treatment: Black Oxide/Galvanized/Polishing/HDG
• Size: Can Be Customized
• Bolt Material: Carbon Steel & Stainless Steel
• Transport Package: Export Packing
• Specification: M4-M20
• Trademark: SANJU
• Origin: Hebei
• HS Code: 7318151001
• Production Capacity: 50000000

Product Description

Please consult customer service for detailed specifications. 
National standard, German standard, American standard.
Customize various types of screws, nails.Bolts, anchor bolts, expansion bolts. All kinds of metal products. 
Size can be customized. (Samples can be sent.)
Your enquiry is welcome. Thanks dear.  

Generally speaking, bolts are used to connect two objects, usually through light holes, and need to be used in conjunction with a nut. Tools usually use a wrench. The head is mostly hexagonal, generally large. The carriage bolt is applied in the groove. The square neck is stuck in the groove during the installation process, which can prevent the bolt from rotating. The carriage bolt can move parallel in the groove. Because the head of the carriage bolt is round, there is no cross slot or hexagon and other available booster tool design, in the actual connection process can also play the role of anti-theft.

Materials: Carbon steel, Q235, 45# steel, stainless steel

Nominal diameter: 5mm--20mm

Length: 15mm--300mm

Surface treatment method: zinc plating, chrome plating, copper plating, surface blackening
 

Stainless steel round head square neck bolts (carriage bolts) specification: German standard DIN603
Specification for stainless steel carriage bolts with small round head and square neck: GB/T12-85
Specification for stainless steel carriage bolts with large round head and square neck: GB/T14-8
 

 

d		M6	M8	M10	M12	M14	M16	M20
b	L≤125	18	22	26	30	34	38	46
	125<L≤200	/	28	32	36	40	44	52
dk	max	13.1	17.1	21.3	25.3	29.3	33.6	41.6
	min	11.3	15.3	19.16	23.16	27.16	31	39
k1	max	4.4	5.4	6.4	8.45	9.45	10.45	12.55
	min	3.6	4.6	5.6	7.55	8.55	9.55	11.45
k	IaX	4.08	5.28	6.48	8.9	9.9	10.9	13.1
	min	3.2	4.4	5.6	7.55	8.55	9.55	11.45
S	Iax	6.3	8.36	10.36	12.43	14.43	16.43	20.52
	min	5.84	7.8	9.8	11.76	13.76	15.76	19.72