China DIN603 Round Head Square Neck Carriage Bolt Carbon Steel Grade 8.8 Black manufacturers and suppliers

DIN603 Round Head Square Neck Carriage Bolt Carbon Steel Grade 8.8 Black

Short Description:

Standard: DIN603

Product Name: DIN603 Round head square neck Carriage Bolt

Key Words: DIN 603, Round head square neck bolt, carriage bolt

Size: M5-M20

Material: Q195, Q235, 35K, 45#

Strength Grade: 4.8, 5.8, 6.8, 8.8

Surface Treatment: Black Oxide

Thread Length: Full Thread/ Half Thread

Packing: Carton with pallets

Other Features: Offer customized head mark

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d		M5	M6	M8	M10	M12	M16	M20
P	Pitch	0.8	1	1.25	1.5	1.75	2	2.5
b	L≤125	16	18	22	26	30	38	46
	125＜L≤200	22	24	28	32	36	44	52
	L>200	/	/	41	45	49	57	65
dk	Max	13.55	16.55	20.65	24.65	30.65	38.8	46.8
dk	Min	12.45	15.45	19.35	23.35	29.35	37.2	45.2
ds	Max	5	6	8	10	12	16	20
ds	Min	4.52	5.52	7.42	9.42	11.3	15.3	19.16
k1	Max	4.1	4.6	5.6	6.6	8.75	12.9	15.9
k1	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
k	Min	2.7	3.12	4.12	4.62	6.05	8.05	9.95
s	Max	5.48	6.48	8.58	10.58	12.7	16.7	20.84
s	Min	4.52	5.52	7.42	9.42	11.3	15.3	19.16

Detail description

Carriage bolt refers to the round head and square neck screw.

Generally speaking, a bolt is used to connect two objects, usually through a light hole, and needs to be used in conjunction with a nut, not a single connection. 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 hex and other available tools 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: 15 mm - 300 mm
Surface treatment method: zinc plating, chrome plating, copper plating, black oxide