Black Round Head Bolts
Standard: ASME B 18.10
Thread Type: UNC Thread/ Partial Thread
Commodity: Black Round Head Bolts
Also Named: Button Head Oval Neck Track Bolt
Material: Carbon Steel
Diameter: 3/4, 7/8, 1, 1-1/8
Finish: Plain/ Black/ Zinc Plated/ Hot Dipped Galvanized/ Organic/ Dacromet/ Phosphating/ Cadmium Electroplate/ Nickel Plated
Head Type: Round Head
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 black round head bolts in China. Please feel free to buy high quality black round head bolts 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
Standard | ASME B 18.10 |
Thread Type | UNC Thread / Partial Thread |
Commodity | Black Round Head Bolts |
Also Named | Button Head Oval Neck Track Bolt |
Material | Carbon Steel |
Diameter | 3/4, 7/8, 1, 1-1/8 |
Finish | Plain/ Black/ Zinc Plated/ Hot Dipped Galvanized/ Organic/ Dacromet/ Phosphating/ Cadmium Electroplate/ Nickel Plated |
Head Type | Round Head |
MOQ | 1000kgs |
Lead Time | 30 to 60 days |
| Thread Size | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | ||
| d | ||||||||
| PP | 13 | 11 | 10 | 9 | 8 | 7 | ||
| ds | min | 0.482 | 0.605 | 0.729 | 0.852 | 0.976 | 1.098 | |
| max | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 | 1.149 | ||
| dk | Nominal Size | 7/8 | 1-5/64 | 1-9/32 | 1-31/64 | 1-11/16 | 1-57/64 | |
| min | 0.8125 | 1.0156 | 1.2188 | 1.4219 | 1.625 | 1.8281 | ||
| max | 0.9375 | 1.1406 | 1.3438 | 1.5469 | 1.75 | 1.9531 | ||
| k | Nominal Size | 5/16 | 25/64 | 15/32 | 35/64 | 5/8 | 45/64 | |
| min | 0.2500 | 0.3281 | 0.4063 | 0.4844 | 0.5625 | 0.6406 | ||
| max | 0.3750 | 0.4531 | 0.5313 | 0.6094 | 0.6875 | 0.7656 | ||
| r1 | 11/16 | 59/64 | 1-5/32 | 1-25/64 | 1-5/8 | 1-55/64 | ||
| r2 | 9/32 | 23/64 | 7/16 | 33/64 | 19/32 | 43/64 | ||
| ds2 | Nominal Size | 5/8 | 13/16 | 1-1/16 | 1-7/32 | 1-3/8 | 1-17/32 | |
| min | 0.5938 | 0.7813 | 1.0313 | 1.1875 | 1.3438 | 1.5000 | ||
| max | 0.6563 | 0.8438 | 1.0938 | 1.2500 | 1.4063 | 1.5625 | ||
| ds1 | Nominal Size | 19/32 | 25/32 | 1-1/32 | 1-3/16 | 1-11/32 | 1-1/2 | |
| min | 0.5625 | 0.7500 | 1.0000 | 1.1563 | 1.3125 | 1.4688 | ||
| max | 0.6250 | 0.8125 | 1.0625 | 1.2188 | 1.3750 | 1.5313 | ||
| k1 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | ||
| r3 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | ||
| b | min | 1-1/8 | 1-1/4 | 1-3/4 | 2 | 2-1/4 | 2-1/2 | |
| ①,S=ds | ||||||||
Product Details

Product Advantages

Advantages Of Black Round Head Bolts
1. The sizes of oval neck track bolts are different according to the various demands of the section of rails.
2. With features of powerful impact force and integrated operating system, it can supply the demand of the locking torque to fasten the rail fastenings conveniently and quickly.
3. AYA supplies all these kinds of track bolts above. What’s more, we can also customize bolts based on your special requirements.
4. AYA has been deeply involved in fastener industry with a single-minded and dedicated attitude, devoting to providing our customers with more industry-specific, professional, standardized, and precise Fasteners solutions.
5. We customize solutions based on actual situation of users. AYA is capable of generating customized fastening solutions for global customers under different scenarios, minimize customer loss caused by environmental factors.
Quality Inspection

1. Quality guarantee and concerning testings are the vital part of the fasteners production. In AYA, most comprehensive inspections are carried out to analyse the fastener with the quantitative analysis method. At last, the thorough results report itself will prove the quality well.
2. Our digital system keeps each batch traceable from raw materials to finished products. Complete quality inspection certificates can be offered upon request.
3. Internal process audition are implemented regularly to ensure the effectiveness of the manufacturing process.
Packaging & Container Loading

1. AYA's high-performance packing equipment maximizes the packaging productivity and efficiency to make the fast delivery.
2. AYA has always attached great importance to the R&D of the packaging to improve the appearance as well as the durability in the process of shipment.
3. The packaging could be customized according to customer needs. And it would be fully reinforced to prevent unexpected damages during the shipment.
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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