201/304 Stainless Steel Carriage Bolt/Large Round Head Square Neck Bolt/Coach Bolt

• Material: Stainless Steel
• Type: Round Head
• Connection: Hinged Bolts
• Head Style: Round
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Grade: 12.9
• Model NO.: variety sizes
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Polishing
• Performance: 4.8, 8.8, 10.9, 12.9 Grade
• Surface Treatment: Black Oxide/Galvanized/Polishing
• Size: Can Be Customized
• Bolt Material: Stainless Steel, Carbon Steel, 45# 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.  

Materials: Carbon steel, Q235, 45# steel,  4.8  8.8  12.9 Grade  /  stainless steel 201 304 316L 410 .

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

d1	M5	M6	M8	M10	M12	M16	M20
p	0.8	1.0	1.25	1.5	1.75	2.0	2.5
d2 min	12.45	15.45	19.35	23.35	29.35	37.2	45.2
b<125	16	18	22	26	30	38	46
b=125-200	22	24	28	32	36	44	52
f min	2.9	3.4	4.4	5.4	7.25	11.1	14.1
k min	2.7	3.12	4.12	4.62	6.05	8.05	9.95
v min	4.52	5.52	7.42	9.42	11.3	15.3	19.16

Dimensions of Round Head Square Neck Bolts		E		A		H		O		P		O	R
		Body dlamater		Head dlamater		head height		square width		square depth		comer radlus on square	Fllet radlus
		MAX	MIN	MAX	MIN	MAX	MIN	MAX	MIN	MAX	MIN	MAX	MAX
No.10	0.1900	0.199	0.182	0.469	0.436	0.114	0.094	0.199	0.185	0.125	0.094	0.031	0.031
1/4	0.2500	0.260	0.237	0.594	0.563	0.145	0.125	0.260	0.245	0.156	0.125	0.031	0.031
5/16	0.3125	0.324	0.298	0.719	0,688	0.176	0.156	0.324	0,307	0.187	0.156	0.031	0.031
3/8	0.3750	0.388	0.360	0.844	0.782	0.208	0.188	0.388	0.368	0.219	0.188	0.047	0.031
7/16	0.4375	0.452	0.421	0.969	0.907	0.239	0.219	0.452	0.431	0.250	0.219	0.047	0.031
1/2	0.5000	0.515	0.483	1.094	1.032	0.270	0.250	0.515	0.492	0.281	0.250	0.047	0.031
5/8	0.6250	0.642	0.605	1.344	1.219	0.344	0,313	0.642	0.616	0.344	0.313	0.078	0.062
3/4	0.75	0.768	0.729	1.594	1.469	0.406	0.375	0.768	0.741	0.406	0.375	0.078	0.062
7/8	0.8750	0.895	0.852	1.844	1.719	0.459	0.438	0.895	0.865	0.469	0.438	0.094	0.062
1	1.0000	1.022	0.976	2.094	1.969	0.531	0.500	1.022	0.990	0.531	0.500	0.094	0.062
See Notes	1.3	4		5		6				7			2.8