Bristol/Allen Countersunk Head Screw UNC Stainless 304-A2 Bcp Stainless UNC in stainless steel, inch thread. 69 sizes available; sold by unit.
| SKU | Size | Price | Status | Qty | |
|---|---|---|---|---|---|
| VT-25875 | 5/32 X 3/8 | $ 133 | In stock | ||
| VT-25876 | 5/32 X 1/2 | $ 139 | In stock | ||
| VT-25877 | 5/32 X 5/8 | $ 148 | In stock | ||
| VT-25878 | 5/32 X 3/4 | $ 178 | In stock | ||
| VT-25879 | 5/32 X 1 | $ 229 | In stock | ||
| VT-25880 | 5/32 X 1.1/4" | $ 294 | In stock | ||
| VT-25881 | 5/32 X 1.1/2" | $ 349 | In stock | ||
| VT-25882 | 3/16 X 3/8 | $ 142 | In stock | ||
| VT-25883 | 3/16 X 1/2 | $ 196 | In stock | ||
| VT-25884 | 3/16 X 5/8 | $ 266 | In stock | ||
| VT-25885 | 3/16 X 3/4 | $ 354 | In stock | ||
| VT-25886 | 3/16 X 1 | $ 279 | In stock | ||
| VT-25887 | 3/16 X 1.1/4 | $ 377 | In stock | ||
| VT-25888 | 3/16 X 1.1/2 | $ 450 | In stock | ||
| VT-25889 | 3/16 X 2 | $ 581 | In stock | ||
| VT-25890 | 1/4 X 1/2 | $ 268 | In stock | ||
| VT-25891 | 1/4 X 5/8 | $ 352 | In stock | ||
| VT-25892 | 1/4 X 3/4 | $ 401 | In stock | ||
| VT-25893 | 1/4 X 1 | $ 456 | In stock | ||
| VT-25894 | 1/4 X 1.1/4 | $ 690 | In stock | ||
| VT-25895 | 1/4 X 1.1/2 | $ 742 | In stock | ||
| VT-25896 | 1/4 X 2 | $ 844 | In stock | ||
| VT-25897 | 1/4 X 2.1/2 | $ 1.327 | In stock | ||
| VT-25898 | 1/4 X 3 | $ 1.482 | In stock | ||
| VT-25933 | 1/4 X 3.1/2 | $ 2.549 | In stock | ||
| VT-25934 | 1/4 X 4 | $ 2.310 | In stock | ||
| VT-25899 | 5/16 X 1/2 | $ 546 | In stock | ||
| VT-25900 | 5/16 X 5/8 | $ 698 | In stock | ||
| VT-25901 | 5/16 X 3/4 | $ 769 | In stock | ||
| VT-25902 | 5/16 X 1 | $ 779 | In stock | ||
| VT-25903 | 5/16 X 1.1/4 | $ 904 | In stock | ||
| VT-25904 | 5/16 X 1.1/2 | $ 1.150 | In stock | ||
| VT-25905 | 5/16 X 2 | $ 1.515 | In stock | ||
| VT-25906 | 5/16 X 2.1/2 | $ 1.468 | In stock | ||
| VT-25907 | 5/16 X 3 | $ 1.748 | In stock | ||
| VT-25935 | 5/16 X 3.1/2 | $ 2.050 | In stock | ||
| VT-25936 | 5/16 X 4 | $ 2.330 | In stock | ||
| VT-25908 | 3/8 X 3/4 | $ 941 | In stock | ||
| VT-25909 | 3/8 X 1 | $ 1.081 | In stock | ||
| VT-25910 | 3/8 X 1.1/4 | $ 1.157 | In stock | ||
| VT-25911 | 3/8 X 1.1/2 | $ 1.736 | In stock | ||
| VT-25912 | 3/8 X 2 | $ 1.852 | In stock | ||
| VT-25913 | 3/8 X 2.1/2 | $ 2.191 | In stock | ||
| VT-25914 | 3/8 X 3 | $ 2.234 | In stock | ||
| VT-27807 | 3/8 X 3.1/2 | $ 2.572 | In stock | ||
| VT-27808 | 3/8 X 4 | $ 2.898 | In stock | ||
| VT-25915 | 1/2 X 3/4 | $ 2.227 | In stock | ||
| VT-25916 | 1/2 X 1 | $ 2.786 | In stock | ||
| VT-25917 | 1/2 X 1.1/4 | $ 3.561 | In stock | ||
| VT-25918 | 1/2 X 1.1/2 | $ 4.230 | In stock | ||
| VT-25919 | 1/2 X 2 | $ 5.577 | In stock | ||
| VT-25920 | 1/2 X 2.1/2 | $ 7.012 | In stock | ||
| VT-25937 | 1/2 X 3.1/2 | $ 9.794 | In stock | ||
| VT-25938 | 1/2 X 4 | $ 11.130 | In stock | ||
| VT-25921 | 5/8 X 1.1/2 | $ 4.978 | In stock | ||
| VT-25922 | 5/8 X 2 | $ 6.636 | In stock | ||
| VT-25923 | 5/8 X 2.1/2 | $ 8.297 | In stock | ||
| VT-25924 | 5/8 X 3 | $ 9.953 | In stock | ||
| VT-25932 | 5/8 X 3.1/2 | $ 11.611 | In stock | ||
| VT-25931 | 5/8 X 4 | $ 13.272 | In stock | ||
| VT-25939 | 5/8 X 4.1/2 | $ 14.102 | In stock | ||
| VT-25940 | 5/8 X 5 | $ 16.589 | In stock | ||
| VT-25925 | 3/4 X 1.1/2 | $ 10.431 | In stock | ||
| VT-25926 | 3/4 X 2 | $ 11.300 | In stock | ||
| VT-25927 | 3/4 X 2.1/2 | $ 14.269 | In stock | ||
| VT-25928 | 3/4 X 3 | $ 17.724 | In stock | ||
| VT-25941 | 3/4 X 3.1/2 | $ 22.493 | In stock | ||
| VT-25942 | 3/4 X 4 | $ 26.948 | In stock | ||
| VT-25943 | 3/4 X 4.1/2 | $ 29.395 | In stock |
Prices per unit, before VAT. Availability is confirmed in the formal quote.
| Material | acero inoxidable |
| Thread system | pulgadas |
| Family | Socket head cap screws & set screws |
The Bristol/Allen countersunk head screw is an industrial fastening element with Bristol or Allen drive, used in joints where the head must sit flush with the surface. TECTUL offers it in 304-A2 stainless steel, UNC inch thread, and UNC thread reference when applicable to the product design. Selection must start from the thread, usable length, head type, and compatibility with the existing threaded part or nut. Unlike the Bristol socket head cap screw, it requires countersinking in the part to house the head. For this lot there are actual sizes such as 1/2 X 1 to 3/16 X 2, sold by unit. It is an option for maintenance, fabrication, equipment assembly, spare parts, and assemblies where precise, removable fastening with good tool access is required.
| Actual lot size | Sales unit |
|---|---|
| 1/2 X 1 | unit |
| 1/2 X 1.1/2 | unit |
| 1/2 X 1.1/4 | unit |
| 1/2 X 2 | unit |
| 1/2 X 2.1/2 | unit |
| 1/2 X 3.1/2 | unit |
| 1/2 X 3/4 | unit |
| 1/2 X 4 | unit |
| 1/4 X 1 | unit |
| 1/4 X 1.1/2 | unit |
| 1/4 X 1.1/4 | unit |
| 1/4 X 1/2 | unit |
| 1/4 X 2 | unit |
| 1/4 X 2.1/2 | unit |
| 1/4 X 3 | unit |
| 1/4 X 3.1/2 | unit |
| 1/4 X 3/4 | unit |
| 1/4 X 4 | unit |
| 1/4 X 5/8 | unit |
| 3/16 X 1 | unit |
| 3/16 X 1.1/2 | unit |
| 3/16 X 1.1/4 | unit |
| 3/16 X 1/2 | unit |
| 3/16 X 2 | unit |
We dispatch to Bogotá, Medellín, Cali, Barranquilla, and all of Colombia. Request a quote via WhatsApp for the Bristol/Allen countersunk head screw, indicating size, thread, material, quantity, and whether you need equivalence with DIN, ISO, or inch thread.
The price depends on the size, material, thread, standard, and requested quantity. Send us the exact reference via WhatsApp and TECTUL will quote according to lot availability.
Compared with the Bristol socket head cap screw, the countersunk version sits flush, but requires preparing the conical seat; it is not a direct replacement if the part is not countersunk.
It is installed with a Bristol/Allen key or compatible tool, verifying thread pitch, available depth, head or tip seating, and the torque defined by the joint design.
This page corresponds to 304-A2 stainless steel with UNC inch thread. The standard reference indicated for selection is UNC thread when applicable.
You can quote the sizes listed in the product technical table. If you need an unpublished length, confirm availability with the sales team.
304-A2 stainless steel improves performance against moisture and moderate corrosion, but final compatibility depends on the environment, chemicals, and maintenance.
Metric Stainless 304-A2 DIN 912 Socket Head Cap Screw BccBristol/Allen Countersunk Head Screw Metric Stainless 304 DIN 7991 BcpBristol/Allen Socket Head Cap Screw Stainless UNC 304-A2 Bcc StainlessBristol/Allen Round Head Screw Metric Stainless Button 304 ISO 7380Headless Bristol/Allen Set Screw Metric Stainless 304-A2 DIN 913 Bsc Stainless MetricHeadless Bristol/Allen Set Screw UNC Stainless 304-A2 Bsc Stainless UNCUpdated: July 22, 2026
