Product Details
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
Standard |
ASME B 18.2.1 |
Thread Type |
UNC Thread / Full Thread |
Commodity |
Square Head Machine Bolts |
Also Named |
Square Head Bolt |
Material |
Steel |
Property Class |
GR 2, 5, 8 |
Diameter |
1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2 |
Finish |
Plain/ Black/ Zinc Plated/ Hot Dipped Galvanized/ Organic/ Dacromet/ Phosphating/ Cadmium Electroplate/ Nickel Plate |
Head Type |
Square Head |
Drive Type |
External Square |
Alternative Standard |
DIN 21346 |
MOQ |
1000kgs |
Lead Time |
30 to 60 days |
Dimensions Table
| Screw Thread |
1/4 |
1/3 |
3/8 |
4/9 |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
1-1/8 |
1-1/4 |
1-3/8 |
1-1/2 |
| d |
| d |
0.2500 |
0.3125 |
0.3750 |
0.4375 |
0.5000 |
0.6250 |
0.7500 |
0.8750 |
1.0000 |
1.1250 |
1.2500 |
1.3750 |
1.5000 |
| PP |
UNC |
20 |
18 |
16 |
14 |
13 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
6 |
| ds |
max |
0.260 |
0.324 |
0.388 |
0.452 |
0.515 |
0.642 |
0.768 |
0.895 |
1.022 |
1.149 |
1.277 |
1.404 |
1.531 |
| min |
0.237 |
0.298 |
0.360 |
0.421 |
0.482 |
0.605 |
0.729 |
0.852 |
0.976 |
1.098 |
1.223 |
1.345 |
1.470 |
| s |
Nominal Size |
3/8 |
1/2 |
9/16 |
5/8 |
3/4 |
15/16 |
1-1/8 |
1-5/16 |
1-1/2 |
1-11/16 |
1-7/8 |
2-1/16 |
2-1/4 |
| max |
0.375 |
0.500 |
0.562 |
0.625 |
0.750 |
0.938 |
1.125 |
1.312 |
1.500 |
1.688 |
1.875 |
2.062 |
2.250 |
| min |
0.362 |
0.484 |
0.544 |
0.603 |
0.725 |
0.906 |
1.088 |
1.269 |
1.450 |
1.631 |
1.812 |
1.994 |
2.175 |
| e |
max |
0.530 |
0.707 |
0.795 |
0.884 |
1.061 |
1.326 |
1.591 |
1.856 |
2.121 |
2.386 |
2.652 |
2.917 |
3.182 |
| min |
0.498 |
0.665 |
0.747 |
0.828 |
0.995 |
1.244 |
1.494 |
1.742 |
1.991 |
2.239 |
2.489 |
2.738 |
2.986 |
| k |
Nominal Size |
11/64 |
13/64 |
1/4 |
19/64 |
21/64 |
27/64 |
1/2 |
19/32 |
21/32 |
3/4 |
27/32 |
29/32 |
1 |
| max |
0.188 |
0.220 |
0.268 |
0.316 |
0.348 |
0.444 |
0.524 |
0.620 |
0.684 |
0.780 |
0.876 |
0.940 |
1.036 |
| min |
0.156 |
0.186 |
0.232 |
0.278 |
0.308 |
0.400 |
0.476 |
0.568 |
0.628 |
0.720 |
0.812 |
0.872 |
0.964 |
| r |
max |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.06 |
0.06 |
0.06 |
0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
| min |
0.01 |
0.01 |
0.01 |
0.01 |
0.01 |
0.02 |
0.02 |
0.02 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
| b |
L≤6 |
0.750 |
0.875 |
1.000 |
1.125 |
1.250 |
1.500 |
1.750 |
2.000 |
2.250 |
2.500 |
2.750 |
3.000 |
3.250 |
| L＞6 |
1.000 |
1.125 |
1.250 |
1.375 |
1.500 |
1.750 |
2.000 |
2.250 |
2.500 |
2.750 |
3.000 |
3.250 |
3.500 |
Product Details
Product Advantages
Advantages Of Square Head Machine Bolts
1. Square head bolts, or square head machine bolts offer a large bearing area for positive gripping.
2. Primarily used nowadays for aesthetic projects that create a rustic look or to match existing fasteners.
3. The square head machine bolts comes in both fully threaded and partially threaded pitches.
4. Square head bolts are sometimes selected over hex heads because the head will fit neatly in a channel.
5. AYA provide any styles, materials and finishes in our square bolts section, while any sizes can be found in AYA site.
Quality Inspection
Professional QC inspectors are assigned to supervise the manufacturing and inspection process to ensure the transparency and high standards of the production and the standardization and precision of the final products.
Packaging & Container Loading
Our scale and presence create cost efficiencies in intercontinental shipping as well as local custom clearing, warehousing and road transportation services. We take care of the last-mile logistics, and could issue the invoice based on DDP term and provide 3PL (third party logistics) 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.
http://www.ayafasteners.com/
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