China 8.8s external hexagonal bolt DinM8-M16 Suppliers, Factory

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China 8.8s external hexagonal bolt DinM8-M16 Suppliers, Factory

It should be noted that although external hexagonal bolts have various advantages, they also have limitations in certain situations. For example, they cannot be used on thin-walled parts or in situations where they are subjected to impact, vibration, or alternating loads. If they exceed a certain length, they do not have full threads, tightening tools are not easy to match, and they are easy to screw and replace. A professional wrench should be used for disassembly, which is not easy to disassemble normally.

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External hexagonal bolt technical drawing

Thread specifications d		M10	M12	M14	M16	M18	M20	M22	M24
P	Pitch	1.50	1.75	2.0	2.0	2.5	2.5	2.5	3
b	L ≤ 125	26	30	34	38	42	46	50	54
	125 < L ≤ 200	32	36	40	44	48	52	56	60
	L > 200	/	/	/	57	61	65	69	73
d_s	Max	10	12	14	16	18	20	22	24
d_s	Min	9.64	11.57	13.57	15.57	17.57	19.48	21.48	23.48
e	Min	19.68	22.58	25.94	29.3	32.66	36.96	39.2	44.8
k	Max	6.69	7.79	9.09	10.29	11.85	12.85	14.35	15.35
k	Min	6.11	7.21	8.51	9.71	11.15	12.15	13.65	14.65
s	Max	18	21	24	27	30	34	36	41
s	Min	17.57	20.16	23.16	26.16	29.16	33	35	40
1,000 pieces of steel weigh ≈ kg		-	-	-	-	-	-	-	-

Thread specifications d		M27	M30	M33	M36	M39	M42	M45	M48
P	Pitch	3	3	3	3	3	3	3	3
b	L ≤ 125	60	66	72	78	84	90	96	102
	125 < L ≤ 200	66	72	78	84	90	96	102	108
	L > 200	79	85	91	97	103	109	115	121
d_s	Max	27	30	33	36	39	42	45	48
d_s	Min	26.48	29.48	32.38	35.38	38.38	41.38	44.38	47.38
e	Min	50.4	54.9	60.3	65.9	71.5	71.5	76.3	81.9
k	Max	17.35	19.12	21.42	22.92	25.42	26.42	28.42	30.42
k	Min	16.65	18.28	20.58	22.08	24.58	25.58	27.58	29.58
s	Max	46	50	55	60	65	65	70	75
s	Min	45	49	53.8	58.8	63.8	63.8	68.1	73.1
1,000 pieces of steel weigh ≈ kg		-	-	-	-	-	-	-	-

External hexagonal bolts are a common type of mechanical fastener, mainly used for connecting and fixing mechanical equipment.

External hexagonal bolts are commonly used for:

1. Connecting components The outer hexagonal bolt fixes multiple components together through the action of torque, forming a whole.

2. Load bearing Due to its high-strength design, the outer hexagonal bolt can withstand large loads and shear forces, and is not easy to break or loosen, ensuring the firmness of the connection.

3. Easy installation No special fixtures or tools are required during installation, it can be completed with a wrench or wrench, and the installation speed is fast, which can improve production efficiency.

4. Wide application range External hexagonal bolts are suitable for various connection situations, such as heavy machinery, construction, and bridge engineering, and can meet various connection requirements.

Frequently Asked Questions

What are external hexagonal bolts typically made of?

They are commonly made from carbon steel, alloy steel, or stainless steel, often with coatings like zinc plating or hot-dip galvanizing for corrosion resistance.

How do I choose the correct thread pitch?

The thread pitch (P) should match the female thread of the receiving component. Standard metric bolts come with coarse threads as a default, while fine threads are used for specific vibration-prone applications.

What does the "L" value represent in the specifications?

The "L" value represents the nominal length of the bolt, measured from under the head to the end of the threads.

Why use a hex head instead of other head types?

Hex heads allow for a high degree of torque to be applied using standard wrenches, making them ideal for heavy-duty structural and mechanical connections.

Can these bolts be reused?

Generally yes, provided they haven't been stretched beyond their yield point (over-torqued) or suffered significant corrosion or thread damage.

What is the difference between "s" and "e" measurements?

"s" refers to the width across flats (where the wrench grips), while "e" refers to the width across corners of the hexagonal head.

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China 8.8s external hexagonal bolt DinM8-M16 Suppliers, Factory

Product Description

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Product Detail

China 8.8s external hexagonal bolt DinM8-M16 Suppliers, Factory

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