Low Head Socket Head Cap Screw
Standard: DIN 6912
Thread Type: Coarse Thread, Partial Thread
Commodity: Low Head Socket Head Cap Screw
Also Named: Allen Key Bolt
Material: Carbon Steel
Property Class: 8.8
Diameter: M4、M5、M6、M8、M10、M12、(M14)、M16、(M18)、M20、(M22)、M24、(M27)、M30、(M33)、M36
Finish: Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated
Head Type: Low Cap Head
Drive Type: Internal Hex
Alternative Standard: DIN 7984、DIN 6912、DIN 7964
MOQ: 1000kgs
Lead Time: 30 to 60 days
Product Introduction
AYA Fasteners (Hebei) Co., Ltd. is one of the most experienced manufacturers and suppliers of low head socket head cap screw in China. Please feel free to buy high quality low head socket head cap screw made in China here from our factory. For price consultation, contact us.

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 | Low Head Socket Head Cap Screw |
Also Named | Allen Key Bolt |
Material | Carbon Steel |
Standard | DIN 6912 |
Property Class | 8.8 |
Diameter | M4、M5、M6、M8、M10、M12、(M14)、M16、(M18)、M20、(M22)、M24、(M27)、M30、(M33)、M36 |
Finish | Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated |
Head Type | Low Cap Head |
Drive Type | Internal Hex |
Thread Type | Coarse Thread, Partial Thread |
Dimensions Table

| Thread Size d | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | |
| P | Pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 |
| b | L≤125 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 |
| 125<L≤200 | / | / | / | / | 32 | 36 | 40 | 44 | |
| L>200 | / | / | / | / | / | / | / | 57 | |
| d1 | min=nominal size | 2 | 2.5 | 3 | 4 | 5 | 6 | 7 | 8 |
| max | 2.06 | 2.56 | 3.06 | 4.075 | 5.075 | 6.075 | 7.09 | 8.09 | |
| dk | max=nominal size | 7 | 8.5 | 10 | 13 | 16 | 18 | 21 | 24 |
| min | 6.78 | 8.28 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | |
| k | max=nominal size | 2.8 | 3.5 | 4 | 5 | 6.5 | 7.5 | 8.5 | 10 |
| min | 2.66 | 3.32 | 3.82 | 4.82 | 6.28 | 7.28 | 8.28 | 9.78 | |
| t | Nominal Size | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5.5 |
| min | 1.48 | 1.88 | 2.38 | 2.88 | 3.35 | 3.85 | 4.35 | 5.35 | |
| max | 1.72 | 2.12 | 2.62 | 3.12 | 3.65 | 4.15 | 4.65 | 5.65 | |
| t1 | min | 3.3 | 4 | 5 | 6.5 | 7.5 | 9 | 10 | 11.5 |
| max | 3.6 | 4.3 | 5.3 | 6.86 | 7.86 | 9.36 | 10.36 | 11.93 | |
| s | Nominal Size | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 |
| min | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | 14.032 | |
| max | 3.1 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | 12.212 | 14.212 | |
| ds | max=nominal size | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 |
| min | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | |
| Thread Size d | (M18) | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | |
| P | Pitch | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 |
| b | L≤125 | 42 | 46 | 50 | 54 | 60 | 66 | 72 | 78 |
| 125<L≤200 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | |
| L>200 | 61 | 65 | 69 | 73 | 79 | 85 | 91 | 97 | |
| d1 | min=nominal size | 8 | 10 | 10 | 12 | 12 | 15 | 16.5 | 18 |
| max | 8.09 | 10.09 | 10.09 | 12.11 | 12.11 | 15.11 | 16.61 | 18.11 | |
| dk | max=nominal size | 27 | 30 | 33 | 36 | 40 | 45 | 50 | 54 |
| min | 26.67 | 29.67 | 32.61 | 35.61 | 39.61 | 44.61 | 49.61 | 53.54 | |
| k | max=nominal size | 11 | 12 | 13 | 14 | 16 | 17.5 | 19.5 | 21.5 |
| min | 10.73 | 11.73 | 12.73 | 13.73 | 15.73 | 17.23 | 19.17 | 21.17 | |
| t | Nominal Size | 6 | 6.5 | 7 | 7 | 8.5 | 9 | 10 | 11.5 |
| min | 5.85 | 6.32 | 6.82 | 6.82 | 8.32 | 8.82 | 9.82 | 11.28 | |
| max | 6.15 | 6.68 | 7.18 | 7.18 | 8.68 | 9.18 | 10.18 | 11.72 | |
| t1 | min | 12.5 | 14 | 15 | 16 | 17 | 19 | 20 | 24 |
| max | 12.93 | 14.43 | 15.43 | 16.43 | 17.43 | 19.52 | 20.52 | 24.52 | |
| s | Nominal Size | 14 | 17 | 17 | 19 | 19 | 22 | 24 | 27 |
| min | 14.032 | 17.05 | 17.05 | 19.065 | 19.065 | 22.065 | 24.065 | 27.065 | |
| max | 14.212 | 17.23 | 17.23 | 19.275 | 19.275 | 22.275 | 24.275 | 27.275 | |
| ds | max=nominal size | 18 | 20 | 22 | 24 | 27 | 30 | 33 | 36 |
| min | 17.73 | 19.67 | 21.67 | 23.67 | 26.67 | 29.67 | 32.61 | 35.61 | |
Product Details

Product Advantages

Advantages OF LOW HEAD SOCKET HEAD CAP SCREW
1. Tamper-resistant and great in protecting your company's machinery as it becomes difficult to open them in less time.
2. You can use them seamlessly in clamping, die fixturing, and various types of machinery parts.
3. This type of cap screw works as a highly sterile fastener as they provide full protection against other types of bolts and screws used for machinery.
4. Prove best for fastening the machinery when the workers work in closed spaces like that in construction applications.
5. AYA is known for handling a wide variety of needs of its clients by delivering the screws within a stipulated time.
6. AYA high-quality socket head cap screws are best for providing a clean effect.
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

AYA's product packaging can not only provide very good protection to the product, but also improve the beauty of the product.
AYA provides custom labeling services.
Usage Scenarios

Why Choose AYA?

AYA provides exclusive services to 1000+ members from all over the world every year, with a unique chain service solution system, you only need to click the mouse to get exclusive fastening solution and enjoy door-to-door services.
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