DIN933 GR12.9 Yellow Zinc Plated 4.6 8.8 Hexagon Bolts Hex Bolt

Nominal Diameter: Ranges from M6 to M56. For example, M12 x 40mm DIN933 Class 10.9 yellow zinc-plated hex cap screws and M24 x 3.00 x 90mm coarse thread DIN933/ISO4017 Class 8.8 yellow zinc-plated hex cap screws are available.
Length: Available in various lengths, such as M6 x 1.00 x 25mm coarse thread DIN933 Class 8.8 yellow zinc-plated hex cap screws and M16 x 12-150mm yellow zinc-plated DIN933 hex bolts.
Head Dimensions: Head dimensions are specified in the DIN933 standard. For instance, for a nominal diameter of M12, the circumscribed circle diameter of the hex head is 17.0mm, and the head height is 7.0mm.

Name	DIN933 GR12.9 Yellow zinc plated High-strength hexagon bolts with large widths
Place of Origin	Jiaxing, Zhengjiang, China
Size	M12-m36, 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

d		M12	M16	M20	M22	M24	M27	M30	M36
P		1.75	2	2.5	2.5	3	3	3.5	4
ds	Metric	12	16	20	22	24	27	30	36
	Max	12.7	16.7	20.84	22.84	24.84	27.84	30.84	37
	Min	11.3	15.3	19.16	21.16	23.16	26.16	29.16	35
e	Min	23.91	29.56	35.03	39.55	45.2	50.85	55.37	66.44
k	Metric	8	10	13	14	15	17	19	23
	Max	8.45	10.75	13.9	14.9	15.9	17.9	20.05	24.05
	Min	7.55	9.25	12.1	13.1	14.1	16.1	17.95	21.95
r	Min	1.2	1.2	1.5	1.5	1.5	2	2	2
s	Max=Metric	22	27	32	36	41	46	50	60
s	Min	21.16	26.16	31	35	40	45	49	58.8

Material: Typically made from carbon steel, such as grade 8.8 yellow zinc-plated carbon steel hex bolts, but can also be produced using alloy steel.
Performance Grade: Common grades include 4.8, 5.8, 8.8, 10.9, 12.9, etc. Grade 8.8 and above are high-strength bolts. For example, grade 8.8 bolts have a minimum tensile strength of 800MPa, while grade 10.9 bolts have a minimum tensile strength of 1000MPa.

Excellent Corrosion Resistance: The zinc layer acts as a barrier, preventing air and moisture from contacting the steel substrate. It also forms a protective layer on the surface that can repair minor scratches, effectively protecting the substrate from corrosion. In general environments, its corrosion resistance surpasses that of white zinc plating.
Good Decorative Aesthetics: The yellow zinc plating layer has a golden-yellow luster with a glossy surface, offering high decorative value and enhancing the visual appeal of the bolt.
Strong Adhesion: The plating layer adheres firmly to the substrate, ensuring durability and reliability during use without peeling or flaking.
Cost-Effective: It provides good protection at a relatively low cost, making it an economical choice for corrosion resistance.

Pre-Installation Inspection: Check the bolt's appearance for defects such as cracks, burrs, or thread deformation. Ensure the thread tolerance meets requirements and that the bolt and nut fit well.
Correct Installation Methods: Use appropriate tools like wrenches or sockets to tighten the bolts. Avoid excessive force to prevent thread damage or bolt breakage. For high-strength bolts, follow specified preload values and tighten in stages.
Maintenance During Use: Regularly inspect the bolts for looseness or corrosion. Tighten any loose bolts promptly. If corrosion occurs, remove rust and apply anti-corrosion treatment. In harsh environments, consider applying anti-rust oil or grease to enhance 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.