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Bolt With Half Thread

Standard: DIN 931
Thread Type: Coarse Thread / Partial Thread
Commodity: Bolt With Half Thread
Also Named: Hex Bolt Half Thread
Material: Carbon Steel
Property Class: 4.6、4.8、5.6、5.8、6.8、8.8、9.8、10.9、12.9
Diameter: M1.6/ M2/ M2.5/ M3/ (M3.5)/ M4/ M5/ M6/ (M7)/ M8/ M10/ M12/ (M14)/ M16/ (M18)/ M20/ (M22)/ M24/ (M27)/ M30/ (M33)/ M36/ (M39)/ M42/ (M45)/ M48/ (M52)/ M56/ (M60)/ M64/ (M68)/ M72/ (M76)/ M80/ M90/ M100/ M110/ M125/ M140/ M160
Finish: Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated
Head Type: Hexagon Head
Drive Type: External Hex
MOQ: 1000kgs
Lead Time: 30 to 60 days

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Product Introduction

AYA Fasteners (Hebei) Co., Ltd. is one of the most experienced manufacturers and suppliers of bolt with half thread in China. Please feel free to buy high quality bolt with half thread made in China here from our factory. For price consultation, contact us.

Bolt With Half Thread DIN 931-AYA

As a global supplier of customized fastening solutions, AYA's service process is also as close to customers as AYA's products. From describing needs to follow-up services, AYA will promptly and spare no effort to help customers solve any fastening problems that arise, to eliminate the concern of customers.

Product Description

Product Name	Bolt With Half Thread
Also Named	Hex Bolt Half Thread
Material	Carbon Steel
Standard	DIN 931
Property Class	4.6、4.8、5.6、5.8、6.8、8.8、9.8、10.9、12.9
Diameter	M1.6/ M2/ M2.5/ M3/ (M3.5)/ M4/ M5/ M6/ (M7)/ M8/ M10/ M12/ (M14)/ M16/ (M18)/ M20/ (M22)/ M24/ (M27)/ M30/ (M33)/ M36/ (M39)/ M42/ (M45)/ M48/ (M52)/ M56/ (M60)/ M64/ (M68)/ M72/ (M76)/ M80/ M90/ M100/ M110/ M125/ M140/ M160
Finish	Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated
Head Type	Hexagon Head
Drive Type	External Hex
Thread Type	Coarse Thread / Partial Thread

Dimensions Table

Bolt With Half Thread DIN 931-2D

Screw Thread d			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6
P	Thread Pitch		0.35	0.4	0.45	0.5	0.6	0.7	0.8	1
b	Ref.	L≤125	9	10	11	12	13	14	16	18
		125＜L≤200	-	-	-	-	-	-	22	24
		L＞200	-	-	-	-	-	-	-	-
c	min		0.1	0.1	0.1	0.15	0.15	0.15	0.15	0.15
c	max		0.25	0.25	0.25	0.4	0.4	0.4	0.5	0.5
da	max		2	2.6	3.1	3.6	4.1	4.7	5.7	6.8
ds	max=nominal size		1.6	2	2.5	3	3.5	4	5	6
	min	Grade A	1.46	1.86	2.36	2.86	3.32	3.82	4.82	5.82
	min	Grade B	-	-	-	-	-	-	-	-
dw	min	Grade A	2.4	3.2	4.1	4.6	5.1	5.9	6.9	8.9
dw	min	Grade B	-	-	-	-	-	-	-	-
e	min	Grade A	3.41	4.32	5.45	6.01	6.58	7.66	8.79	11.05
e	min	Grade B	-	-	-	-	-	-	-	-
k	Nominal Size		1.1	1.4	1.7	2	2.4	2.8	3.5	4
	Grade A	min	0.98	1.28	1.58	1.88	2.28	2.68	3.35	3.85
	Grade A	max	1.22	1.52	1.82	2.12	2.52	2.92	3.65	4.15
	Grade B	min	-	-	-	-	-	-	-	-
	Grade B	max	-	-	-	-	-	-	-	-
k1	min		0.7	0.9	1.1	1.3	1.6	1.9	2.28	2.63
r	min		0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.25
s	max=nominal size		3.2	4	5	5.5	6	7	8	10
	min	Grade A	3.02	3.82	4.82	5.32	5.82	6.78	7.78	9.78
	min	Grade B	-	-	-	-	-	-	-	-
Screw Thread d			(M7)	M8	M10	M12	(M14)	M16	(M18)	M20
P	Thread Pitch		1	1.25	1.5	1.75	2	2	2.5	2.5
b	Ref.	L≤125	20	22	26	30	34	38	42	46
		125＜L≤200	26	28	32	36	40	44	48	52
		L＞200	-	-	45	49	53	57	61	65
c	min		0.15	0.15	0.15	0.15	0.15	0.2	0.2	0.2
c	max		0.5	0.6	0.6	0.6	0.6	0.8	0.8	0.8
da	max		7.8	9.2	11.2	13.7	15.7	17.7	20.2	22.4
ds	max=nominal size		7	8	10	12	14	16	18	20
	min	Grade A	6.78	7.78	9.78	11.73	13.73	15.73	17.73	19.67
	min	Grade B	-	-	-	-	-	15.57	17.57	19.48
dw	min	Grade A	9.8	11.6	15.6	17.4	20.5	22.5	25.3	28.2
dw	min	Grade B	-	-	-	-	-	22	24.8	27.7
e	min	Grade A	12.12	14.38	18.9	21.1	24.49	26.75	30.14	33.53
e	min	Grade B	-	-	-	-	-	26.17	29.56	32.95
k	Nominal Size		4.8	5.3	6.4	7.5	8.8	10	11.5	12.5
	Grade A	min	4.65	5.15	6.22	7.32	8.62	9.82	11.28	12.28
	Grade A	max	4.95	5.45	6.58	7.68	8.98	10.18	11.72	12.72
	Grade B	min	-	-	-	-	-	9.71	11.15	12.15
	Grade B	max	-	-	-	-	-	10.29	11.85	12.85
k1	min		3.19	3.54	4.28	5.05	5.96	6.8	7.8	8.5
r	min		0.25	0.4	0.4	0.6	0.6	0.6	0.6	0.8
s	max=nominal size		11	13	17	19	22	24	27	30
	min	Grade A	10.73	12.73	16.73	18.67	21.67	23.67	26.67	29.67
	min	Grade B	-	-	-	-	-	23.16	26.16	29.16
Screw Thread d			(M22)	M24	(M27)	M30	(M33)	M36	(M39)	M42
P	Thread Pitch		2.5	3	3	3.5	3.5	4	4	4.5
b	Ref.	L≤125	50	54	60	66	72	78	84	90
		125＜L≤200	56	60	66	72	78	84	90	96
		L＞200	69	73	79	85	91	97	103	109
c	min		0.2	0.2	0.2	0.2	0.2	0.2	0.3	0.3
c	max		0.8	0.8	0.8	0.8	0.8	0.8	1	1
da	max		24.4	26.4	30.4	33.4	36.4	39.4	42.4	45.6
ds	max=nominal size		22	24	27	30	33	36	39	42
	min	Grade A	21.67	23.67	-	-	-	-	-	-
	min	Grade B	21.48	23.48	26.48	29.48	32.38	35.38	38.38	41.61
dw	min	Grade A	30	33.6	-	-	-	-	-	-
dw	min	Grade B	29.5	33.2	38	42.7	46.6	51.1	55.9	60.6
e	min	Grade A	35.72	39.98	-	-	-	-	-	-
e	min	Grade B	35.03	39.55	45.2	50.85	55.37	60.79	66.44	71.3
k	Nominal Size		14	15	17	18.7	21	22.5	25	26
	Grade A	min	13.78	14.78	-	-	-	-	-	-
	Grade A	max	14.22	15.22	-	-	-	-	-	-
	Grade B	min	13.65	14.65	16.65	18.28	20.58	22.08	24.58	25.58
	Grade B	max	14.35	15.35	17.35	19.12	21.42	22.92	25.42	26.42
k1	min		9.6	10.3	11.7	12.8	14.4	15.5	17.2	17.9
r	min		0.8	0.8	1	1	1	1	1	1.2
s	max=nominal size		32	36	41	46	50	55	60	65
	min	Grade A	31.61	35.38	-	-	-	-	-	-
	min	Grade B	31	35	40	45	49	53.8	58.8	63.1
Screw Thread d			(M45)	M48	(M52)	M56	(M60)	M64	(M68)	M72
P	Thread Pitch		4.5	5	5	5.5	5.5	6	6	6
b	Ref.	L≤125	96	102	-	-	-	-	-	-
		125＜L≤200	102	108	116	124	132	140	148	156
		L＞200	115	121	129	137	145	153	161	169
c	min		0.3	0.3	0.3	-	-	-	-	-
c	max		1	1	1	1	1	1	1	1
da	max		48.6	52.6	56.6	63	67	71	75	79
ds	max=nominal size		45	48	52	56	60	64	68	72
	min	Grade A	-	-	-	-	-	-	-	-
	min	Grade B	44.38	47.38	51.26	55.26	59.26	63.26	67.26	71.26
dw	min	Grade A	-	-	-	-	-	-	-	-
dw	min	Grade B	64.7	69.4	74.2	78.7	83.4	88.2	92.9	97.7
e	min	Grade A	-	-	-	-	-	-	-	-
e	min	Grade B	76.95	82.6	88.25	93.56	99.21	104.86	110.51	116.16
k	Nominal Size		28	30	33	35	38	40	43	45
	Grade A	min	-	-	-	-	-	-	-	-
	Grade A	max	-	-	-	-	-	-	-	-
	Grade B	min	27.58	29.58	32.5	34.5	37.5	39.5	42.5	44.5
	Grade B	max	28.42	30.42	33.5	35.5	38.5	40.5	43.5	45.5
k1	min		19.3	20.9	22.8	24.2	26.2	27.6	29.8	31.2
r	min		1.2	1.6	1.6	2	2	2	2	2
s	max=nominal size		70	75	80	85	90	95	100	105
	min	Grade A	-	-	-	-	-	-	-	-
	min	Grade B	68.1	73.1	78.1	82.8	87.8	92.8	97.8	102.8
Screw Thread d			(M76)	M80	M90	M100	M110	M125	M140	M160
P	Thread Pitch		6	6	6	6	6	6	6	6
b	Ref.	L≤125	-	-	-	-	-	-	-	-
		125＜L≤200	164	172	192	-	-	-	-	-
		L＞200	177	185	205	225	245	275	305	345
c	min		-	-	-	-	-	-	-	-
c	max		1	2	2	2	2	2	2	2
da	max		83	87	97	107	117	132	147	167
ds	max=nominal size		76	88	90	100	110	125	140	160
	min	Grade A	-	-	-	-	-	-	-	-
	min	Grade B	75.26	79.26	89.13	99.13	109.13	124	139	159
dw	min	Grade A	-	-	-	-	-	-	-	-
dw	min	Grade B	102.1	106.9	121.1	135.4	144.9	168.6	185.6	214.1
e	min	Grade A	-	-	-	-	-	-	-	-
e	min	Grade B	121.81	127.46	144.08	161.02	172.32	200.57	220.8	254.7
k	Nominal Size		48	50	57	63	69	79	88	100
	Grade A	min	-	-	-	-	-	-	-	-
	Grade A	max	-	-	-	-	-	-	-	-
	Grade B	min	47.5	49.5	56.4	62.4	68.4	78.4	87.3	99.3
	Grade B	max	48.5	50.5	57.6	63.6	69.6	79.6	88.7	100.7
k1	min		33.2	34.6	40.3	43.7	47.9	54.9	61.1	69.5
r	min		2	2	2.5	2.5	2.5	2.5	2.5	2.5
s	max=nominal size		110	115	130	145	155	180	200	230
	min	Grade A	-	-	-	-	-	-	-	-
	min	Grade B	107.8	112.8	127.5	142.5	152.5	177.5	195.4	225.4

Product Details

Bolt With Half Thread-AYA FASTENERS

Product Advantages

Advantages of Bolt With Half Thread

1. The partially threaded bolt is often used in alternators, motor brackets, and water pumps in the automotive industry, so it has high precision and extremely high holding force.

2. Bolts with half thread have retention at the tip of the thread.

3. Hex bolt Half Thread provides better resistance and alignment.

4. The unthreaded part gives the bolt excellent shear properties as there are no weak points that could lead to cracking or bending.

5. Hex bolt half thread can withstand greater shear force.

6. DIN 931 hex bolt dimensions are very varied, they can meet a variety of needs.

7. AYA can provide you with a variety of options to make the holding length of the hex head bolts with shank meet your needs.

8. AYA has rich experience in the fastener field.

Quality Inspection

Every link in the production will be supervised by quality control personnel to ensure that the final product meets customer expectations.

Sophisticated testing instruments and experienced quality control personnel can provide customers with more accurate quality inspection reports.

Packaging & Container Loading

Bolt With Half Thread DIN 931-package

AYA's product packaging can not only provide very good protection for the product but also improve the beauty of the product.

AYA provides custom labeling services.

Usage Scenarios

Why AYA?

China DIN 931 Bolts

Bolts and nuts are used for different types of projects. Especially hex head bolts have become a versatile choice for several industrial and residential projects. Whether it is woodworking or a metal project, you can use hex bolts for your needs. However, these bolts are available in various standards. DIN 931 is also a hex head bolt with good tensile properties. It is capable of enduring various scenarios and environments. It is one of the most widely used adaptable fasteners made of premium materials and a quality finish.

An overview of DIN 931 Bolts

DIN 931 hexagonal head bolts have a shank, and they are also known as half-threaded or semi-threaded hex bolts. You will find variations in thread length. Hex nuts often work with DIN 931 hex bolts. The integrated parts have a threaded connection, and they are easily detachable. The fine thread hex bolt also has a smooth locking mechanism. Most commonly, it is chosen for parts that need to endure vibration and high impact. The adjustment mechanism may also become easier by using the hex bolt.

Head shape of the bolt

As the bolt has a hexagonal head, you can easily grip the bolt from various angles. However, you have to use different tools to do it. That is why the process of installing and removing the screws is very easy. Moreover, you can tighten and loosen hex bolts whenever you need them.

Bolts with half-thread

As the hex bolts have half-thread, there is a part of a light rod. The position of the rod corresponds to the thread section. The preset hole is much close to it. Moreover, the locking system has high locking stability. Whenever a shear force is applied, the longer part of the fastener will not shift significantly. Half-thread bolts can be the right choice if there are strict requirements for fastening objects. The diameter of the rod of these bolts is stronger compared to the rod of full-thread bolts. Besides, there is a very high yield strength. Thus, if you give priority to strength, the half-thread design can be the right choice.

Half-threaded design of DIN 931 bolts

As the hex head bolt is partially threaded, there is a minimal shearing issue. The unthreaded section of the bolt adds strength and prevents shearing movements. This part also gains high resistance.

Another advantage of using half-threaded DIN 931 bolts is precise alignment. The grip length (unthreaded) is available in a range of sizes. You need to select an appropriate grip length to install the bolts with a secure fit. The threaded part is pulled by the threaded section into a hole to hold it in place. Unlike fully threaded versions, the bolt does not bend or move.

Materials used for DIN 931 bolts

Carbon Steel hex bolts- Carbon steel bolts are advantageous as they have a lightweight design. The amount of carbon used in the design makes a difference in the weight. Another important thing is that carbon steel bolts are an affordable choice for professionals. So, if you have a low budget, you can go for these carbon steel hex bolts. However, you need to take steps to prevent the bolts from corrosion.

Stainless steel hex bolts- These stainless steel bolts are resistant to rust and corrosion. So, they last longer and do not get tarnished. You can use these bolts in harsh environments and under extreme temperatures. Although they are a bit costlier, you will find high strengths in these bolts. Besides, the bolts are easy to clean and do not get scratched.

Stainless steel of different grades is used for bolts. T304 stainless steel is resistant to oxidation, and it is the best choice for using bolts in the marine environment.

DIN 931 bolts with various types of finish

Yellow plated finish- It provides a protective layer and prevents corrosion. The gold or yellow finish protects the material from damage. It not only provides cosmic benefits but also ensures cost-effectiveness.

Bright Zinc Plated finish- It is another finish for the steel bolts. The 3-micron plating creates a shiny finish. Although it creates a protective coating, you can use the bolts for indoor applications. The zinc layer also ensures lubricity to the bolt’s threads.

Galvanized finish- These bolts have a duller finish and can be used for outdoor applications. They have a thicker zinc covering for better protection.

How to use the bolt

As DIN 931 is a hex bolt, it is to be combined with nuts or used in pre-tapped holes. Make your decision based on your project needs. You can tighten the bolt using different tools like

Hex keys