Low Head Allen Bolt
Standard: ASME B 18.3
Thread Type: UNF Thread, Partial Thread
Commodity: Low Head Allen Bolt
Also Named: Low Head Cap Screw
Material: Carbon Steel
Property Class: 4.8 - 12.9
Diameter: 4#、5#、6#、8#、10#、1/4、5/16、3/8、7/16、1/2、5/8
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
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 allen bolt in China. Please feel free to buy high quality low head allen bolt made in China here from our factory. For price consultation, contact us.

As a global supplier of customized fastening solutions, AYA's senvice 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 Allen Bolt |
Also Named | Low Head Cap Screw |
Material | Carbon Steel |
Standard | ASME B 18.3 |
Property Class | 4.8 - 12.9 |
Diameter | 4#、5#、6#、8#、10#、1/4、5/16、3/8、7/16、1/2、5/8 |
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 | UNF Thread, Partial Thread |
Dimensions Table

| Screw Thread | 4# | 5# | 6# | 8# | 10# | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 5/8 | |
| d | Thread Diameter | 0.1120 | 0.1250 | 0.1380 | 0.1640 | 0.1900 | 0.2500 | 0.3125 | 0.3750 | 0.4375 | 0.5000 | 0.6250 |
| PP | UNC | 40.0 | 40.0 | 32.0 | 32.0 | 24.0 | 20.0 | 18.0 | 16.0 | 14.0 | 13.0 | 11.0 |
| UNF | 48.0 | 44.0 | 40.0 | 36.0 | 32.0 | 28.0 | 24.0 | 24.0 | 20.0 | 20.0 | 18.0 | |
| UNEF | - | - | - | - | - | 32.0 | 32.0 | 32.0 | 28.0 | 28.0 | 24.0 | |
| ds | max | 0.1120 | 0.1250 | 0.1380 | 0.1640 | 0.1900 | 0.2500 | 0.3125 | 0.3750 | 0.4375 | 0.5000 | 0.6250 |
| min | 0.1075 | 0.1202 | 0.1329 | 0.1585 | 0.1840 | 0.2435 | 0.3053 | 0.3678 | 0.4294 | 0.4919 | 0.6163 | |
| dk | max | 0.183 | 0.205 | 0.226 | 0.270 | 0.312 | 0.375 | 0.437 | 0.562 | 0.625 | 0.750 | 0.875 |
| min | 0.178 | 0.200 | 0.221 | 0.265 | 0.307 | 0.369 | 0.431 | 0.556 | 0.618 | 0.743 | 0.867 | |
| k | max | 0.059 | 0.065 | 0.072 | 0.085 | 0.098 | 0.127 | 0.158 | 0.192 | 0.223 | 0.254 | 0.316 |
| min | 0.053 | 0.059 | 0.066 | 0.079 | 0.092 | 0.121 | 0.152 | 0.182 | 0.213 | 0.244 | 0.306 | |
| s | Nominal Size | 0.050 | 0.062 | 0.062 | 0.078 | 0.094 | 0.125 | 0.156 | 0.188 | 0.219 | 0.250 | 0.312 |
| t | min | 0.038 | 0.044 | 0.050 | 0.060 | 0.072 | 0.094 | 0.110 | 0.115 | 0.135 | 0.151 | 0.250 |
Product Details

Product Advantages

Advantages OF LOW HEAD ALLEN BOLT
1. Manufactured keeping in mind the neatness customers want in their machinery without compromising safety.
2. Made of superior quality materials like aluminum, carbon steel, copper, stainless steel, brass, titanium, etc.
3. The Clamped rectangular or Hexagonal parts of our Allen bolts are made to take the full fastening blows without creating any strain problems.
4. Allen low head bolts go through a strenuous production process, mostly used in high-grade mechanical processes.
5. AYA produces high-quality international standard level material for Allen Bolts that fits your machines without hassle.
6. AYA provides global customers with less turnaround time on the delivery of the Allen bolts even when it's bulk deliveries.
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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