Carbon Steel Hot dip Galvanized High-strength Hexagon Head Bolts Hex Bolt and Nut

Name	Hot dip Galvanized High-strength hexagon head bolts
Place of Origin	Jiaxing, Zhengjiang, China
Size	M5-M100 1/2-4", or non-standard as request&design
Finish	plain, zinc plated, black oxide, hot dip galv.et
Head Type	hex head
Material	Carbon steel, stainless steel, alloys steel etc.
Grade	a2,a4,4.8,8.8,10.9,12.9.etc,A2-70, A4-80, A193-B7, B16, L7 ect
Standard	GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc
Non-standards	OEM is available, according to drawing or samples
Samples	Samples are free.
Package	Bulk in master cartons, then on pallets, or according to customers' requirement.
Payment	T/T or L/C

DIN933
Screw Thread d	Pitch P	k		s
Screw Thread d	Pitch P	max	min	max	min
M5	0.8	3.74	3.26	8	7.64
M6	1	4.42	3.76	10	9.64
M7	1	5.04	4.56	11	10.57
M8	1.25	5.54	5.06	13	12.57
M10	1.5	6.69	6.11	17	16.57
M12	1.75	7.79	7.21	19	18.48
M14	2	9.09	8.51	22	21.16
M16	2	10.29	7.91	24	23.16
M18	2.5	11.85	11.15	27	26.15
M20	2.5	12.85	12.15	30	29.16
M22	2.5	14.35	13.65	32	31
M24	3	15.35	14.65	36	35
M27	3	16.65	17.35	41	40
M30	3.5	19.12	18.28	46	45
M33	3.5	21.42	20.58	50	49
M36	4	22.92	22.08	55	53.8

Thread Standard: DIN933 hex bolts use the metric thread system, with coarse threads being the most common. The thread tolerance class is generally 6g.
Head Shape: Features a hexagonal head design, making it easy to grip with tools such as wrenches or sockets, facilitating installation and tightening.
Full-Thread Design: The bolt is fully threaded from the head to the end, offering a larger thread contact area and greater adjustment range. This makes it suitable for installations requiring longer thread engagement lengths and varying thicknesses of mounting surfaces.

Material: Typically made of carbon steel, it can also be produced using alloy steel or stainless steel to meet specific performance requirements.
Performance Grade: Common performance grades include 4.8, 5.8, 8.8, 10.9, 12.9, etc. Grade 8.8 and above are high-strength bolts. For instance, the tensile strength of a grade 8.8 bolt is no less than 800MPa, while the tensile strength of a grade 10.9 bolt is no less than 1000MPa.

HDG refers to hot-dip galvanizing, a surface treatment process where the bolt is immersed in molten zinc to form a zinc coating on its surface. The advantages of HDG DIN933 hex bolts include:

Strong Corrosion Resistance: The zinc layer effectively prevents air and moisture from contacting the base material, resisting corrosion from moisture, salt spray, and other chemicals. This makes it particularly suitable for coastal, high-humidity, and acidic environments.
Long Service Life: In outdoor environments, the galvanized layer can last 20–50 years with minimal maintenance.
Durable Zinc Layer: The zinc layer bonds firmly to the base material, is resistant to peeling, and can withstand impacts.
Cost-Effective: Compared to stainless steel bolts, HDG bolts are more affordable while offering similar corrosion resistance.

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Jiaxing Goshen Hardware CO., LTD is Located at Economic Development Area, Jiaxing City, Zhejiang Province, China. We specialise in suppling kinds of stainless steel, high strength and low carbon steel fasteners with excellent quality and reliable price. Our fasteners according to a number of internationally recognised standards including DIN, ANSI/ASTM, BS, JIS, GB etc.