Square Head Set Screw UNC Pcc in carbon steel, inch thread. 119 sizes available; sold by unit.

| SKU | Size | Price | Status | Qty | |
|---|---|---|---|---|---|
| VT-30370 | 1/4 X 3/8 | $ 286 | In stock | ||
| VT-30371 | 1/4 X 1/2 | $ 443 | In stock | ||
| VT-30372 | 1/4 X 5/8 | $ 477 | In stock | ||
| VT-30373 | 1/4 X 3/4 | $ 571 | In stock | ||
| VT-30374 | 1/4 X 1 | $ 592 | In stock | ||
| VT-30375 | 1/4 X 1.1/4 | $ 631 | In stock | ||
| VT-30376 | 1/4 X 1.1/2 | $ 726 | In stock | ||
| VT-30377 | 1/4 X 2 | $ 969 | In stock | ||
| VT-30378 | 1/4 X 2.1/2 | $ 1.558 | In stock | ||
| VT-30379 | 1/4 X 3 | $ 1.618 | In stock | ||
| VT-30380 | 1/4 X 3.1/2 | $ 1.710 | In stock | ||
| VT-30381 | 1/4 X 4 | $ 1.759 | In stock | ||
| VT-30382 | 1/4 X 4.1/2 | $ 1.789 | In stock | ||
| VT-30383 | 1/4 X 5 | $ 1.991 | In stock | ||
| VT-30384 | 5/16 X 3/8 | $ 497 | In stock | ||
| VT-30385 | 5/16 X 1/2 | $ 518 | In stock | ||
| VT-30386 | 5/16 X 5/8 | $ 615 | In stock | ||
| VT-30387 | 5/16 X 3/4 | $ 733 | In stock | ||
| VT-30388 | 5/16 X 1 | $ 859 | In stock | ||
| VT-30389 | 5/16 X 1.1/4 | $ 936 | In stock | ||
| VT-30390 | 5/16 X 1.1/2 | $ 1.123 | In stock | ||
| VT-30391 | 5/16 X 2 | $ 1.196 | In stock | ||
| VT-30392 | 5/16 X 2.1/2 | $ 1.413 | In stock | ||
| VT-30393 | 5/16 X 3 | $ 1.696 | In stock | ||
| VT-30394 | 5/16 X 3.1/2 | $ 2.226 | In stock | ||
| VT-30395 | 5/16 X 4 | $ 2.544 | In stock | ||
| VT-30396 | 5/16 X 4.1/2 | $ 2.704 | In stock | ||
| VT-30397 | 5/16 X 5 | $ 2.829 | In stock | ||
| VT-30398 | 3/8 X 1/2 | $ 844 | In stock | ||
| VT-30399 | 3/8 X 5/8 | $ 904 | In stock | ||
| VT-30400 | 3/8 X 3/4 | $ 974 | In stock | ||
| VT-30401 | 3/8 X 1 | $ 1.374 | In stock | ||
| VT-30402 | 3/8 X 1.1/4 | $ 1.269 | In stock | ||
| VT-30403 | 3/8 X 1.1/2 | $ 1.788 | In stock | ||
| VT-30404 | 3/8 X 2 | $ 2.193 | In stock | ||
| VT-30405 | 3/8 X 2.1/2 | $ 2.225 | In stock | ||
| VT-30406 | 3/8 X 3 | $ 2.341 | In stock | ||
| VT-30407 | 3/8 X 3.1/2 | $ 2.462 | In stock | ||
| VT-30408 | 3/8 X 4 | $ 2.813 | In stock | ||
| VT-30409 | 3/8 X 4.1/2 | $ 3.367 | In stock | ||
| VT-30410 | 3/8 X 5 | $ 3.738 | In stock | ||
| VT-30411 | 3/8 X 6 | $ 4.486 | In stock | ||
| VT-30412 | 7/16 X 3/4 | $ 1.402 | In stock | ||
| VT-30413 | 7/16 X 1 | $ 1.868 | In stock | ||
| VT-30414 | 7/16 X 1.1/4 | $ 2.340 | In stock | ||
| VT-30415 | 7/16 X 1.1/2 | $ 2.930 | In stock | ||
| VT-30416 | 7/16 X 2 | $ 3.098 | In stock | ||
| VT-30417 | 7/16 X 2.1/2 | $ 4.470 | In stock | ||
| VT-30418 | 7/16 X 3 | $ 5.250 | In stock | ||
| VT-30419 | 7/16 X 3.1/2 | $ 6.124 | In stock | ||
| VT-30420 | 7/16 X 4 | $ 6.998 | In stock | ||
| VT-30421 | 7/16 X 4.1/2 | $ 7.875 | In stock | ||
| VT-30422 | 7/16 X 5 | $ 8.749 | In stock | ||
| VT-30423 | 7/16 X 6 | $ 10.497 | In stock | ||
| VT-30424 | 1/2 X 3/4 | $ 1.656 | In stock | ||
| VT-30425 | 1/2 X 1 | $ 1.986 | In stock | ||
| VT-30426 | 1/2 X 1.1/4 | $ 2.062 | In stock | ||
| VT-30427 | 1/2 X 1.1/2 | $ 2.208 | In stock | ||
| VT-30428 | 1/2 X 2 | $ 3.322 | In stock | ||
| VT-30429 | 1/2 X 2.1/2 | $ 3.867 | In stock | ||
| VT-30430 | 1/2 X 3 | $ 4.564 | In stock | ||
| VT-30431 | 1/2 X 3.1/2 | $ 4.579 | In stock | ||
| VT-30432 | 1/2 X 4 | $ 4.697 | In stock | ||
| VT-30433 | 1/2 X 4.1/2 | $ 6.427 | In stock | ||
| VT-30434 | 1/2 X 5 | $ 5.950 | In stock | ||
| VT-30435 | 1/2 X 6 | $ 7.139 | In stock | ||
| VT-30436 | 1/2 X 7 | $ 8.332 | In stock | ||
| VT-30437 | 9/16 X 3/4 | $ 11.848 | In stock | ||
| VT-30438 | 9/16 X 1 | $ 15.795 | In stock | ||
| VT-30439 | 9/16 X 1.1/4 | $ 19.742 | In stock | ||
| VT-30440 | 9/16 X 1.1/2 | $ 20.278 | In stock | ||
| VT-30441 | 9/16 X 2 | $ 24.837 | In stock | ||
| VT-30442 | 9/16 X 2.1/2 | $ 28.835 | In stock | ||
| VT-30443 | 9/16 X 3 | $ 32.915 | In stock | ||
| VT-30444 | 9/16 X 3.1/2 | $ 35.120 | In stock | ||
| VT-30445 | 9/16 X 4 | $ 39.083 | In stock | ||
| VT-30446 | 9/16 X 4.1/2 | $ 43.968 | In stock | ||
| VT-30447 | 9/16 X 5 | $ 48.848 | In stock | ||
| VT-30448 | 5/8 X 3/4 | $ 2.554 | In stock | ||
| VT-30449 | 5/8 X 1 | $ 3.406 | In stock | ||
| VT-30450 | 5/8 X 1.1/4 | $ 4.254 | In stock | ||
| VT-30451 | 5/8 X 1.1/2 | $ 4.436 | In stock | ||
| VT-30452 | 5/8 X 2 | $ 6.132 | In stock | ||
| VT-30453 | 5/8 X 2.1/2 | $ 6.537 | In stock | ||
| VT-30454 | 5/8 X 3 | $ 8.658 | In stock | ||
| VT-30455 | 5/8 X 3.1/2 | $ 10.101 | In stock | ||
| VT-30456 | 5/8 X 4 | $ 10.374 | In stock | ||
| VT-30457 | 5/8 X 4.1/2 | $ 11.675 | In stock | ||
| VT-30458 | 5/8 X 5 | $ 12.971 | In stock | ||
| VT-30459 | 5/8 X 5.1/2 | $ 15.508 | In stock | ||
| VT-30460 | 5/8 X 6 | $ 16.917 | In stock | ||
| VT-30461 | 5/8 X 7 | $ 19.734 | In stock | ||
| VT-30462 | 3/4 X 1 | $ 3.312 | In stock | ||
| VT-30463 | 3/4 X 1.1/4 | $ 4.143 | In stock | ||
| VT-30464 | 3/4 X 1.1/2 | $ 4.971 | In stock | ||
| VT-30465 | 3/4 X 2 | $ 9.111 | In stock | ||
| VT-30466 | 3/4 X 2.1/2 | $ 8.787 | In stock | ||
| VT-30467 | 3/4 X 3 | $ 8.946 | In stock | ||
| VT-30468 | 3/4 X 3.1/2 | $ 10.135 | In stock | ||
| VT-30469 | 3/4 X 4 | $ 10.232 | In stock | ||
| VT-30470 | 3/4 X 4.1/2 | $ 16.253 | In stock | ||
| VT-30471 | 3/4 X 5 | $ 18.105 | In stock | ||
| VT-30472 | 3/4 X 5.1/2 | $ 19.864 | In stock | ||
| VT-30473 | 3/4 X 6 | $ 21.707 | In stock | ||
| VT-30475 | 3/4 X 8 | $ 27.447 | In stock | ||
| VT-30476 | 7/8 X 2 | $ 9.317 | In stock | ||
| VT-30477 | 7/8 X 2.1/2 | $ 11.642 | In stock | ||
| VT-30478 | 7/8 X 3 | $ 13.974 | In stock | ||
| VT-30479 | 7/8 X 3.1/2 | $ 16.301 | In stock | ||
| VT-30480 | 7/8 X 4 | $ 18.630 | In stock | ||
| VT-30481 | 7/8 X 4.1/2 | $ 20.957 | In stock | ||
| VT-30482 | 7/8 X 5 | $ 23.288 | In stock | ||
| VT-30483 | 1 X 3 | $ 22.584 | In stock | ||
| VT-30484 | 1 X 3.1/2 | $ 32.741 | In stock | ||
| VT-30485 | 1 X 4 | $ 37.421 | In stock | ||
| VT-30486 | 1 X 4.1/2 | $ 42.096 | In stock | ||
| VT-30487 | 1 X 5 | $ 46.774 | In stock | ||
| VT-30488 | 1 X 5.1/2 | $ 51.448 | In stock | ||
| VT-30489 | 1 X 6 | $ 56.126 | In stock |
Prices per unit, before VAT. Availability is confirmed in the formal quote.
| Material | acero al carbono |
| Thread system | pulgadas |
| Family | Socket head cap screws & set screws |
The square head set screw is an industrial fastening element with Bristol or Allen drive, used in mechanical locking and adjustment with external drive. TECTUL offers it in carbon 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. It is not a Bristol/Allen set screw: it is tightened from the square head and used when adjustable thrust or fastening is required. For this lot there are actual sizes such as 1 X 3 to 1/4 X 1/2, 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 X 3 | unit |
| 1 X 3.1/2 | unit |
| 1 X 4 | unit |
| 1 X 4.1/2 | unit |
| 1 X 5 | unit |
| 1 X 5.1/2 | unit |
| 1 X 6 | 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 | unit |
| 1/2 X 3.1/2 | unit |
| 1/2 X 3/4 | unit |
| 1/2 X 4 | unit |
| 1/2 X 4.1/2 | unit |
| 1/2 X 5 | unit |
| 1/2 X 6 | unit |
| 1/2 X 7 | 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 |
We dispatch to Bogotá, Medellín, Cali, Barranquilla, and all of Colombia. Request a quote via WhatsApp for the square head set 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 headless Bristol set screw, the square head set screw is handled externally with a wrench and is suitable when frequent adjustment is required.
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 carbon 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.
Uncoated carbon steel must be protected if it will be exposed to moisture, chemicals, or weather.
Socket Head Cap Screw UNC Bcc UNC G8
Headless Socket Set Screw UNC Bsc UNC G8
Metric Countersunk Socket Screw DIN 7991 Bcp Metric - 10.9
Headless Bristol/Allen Set Screw Metric DIN 913 Bsc - 10.9
Bristol/Allen Socket Head Cap Screw Metric DIN 912 Bcc - 8.8
Bristol/Allen Countersunk Head Screw UNC Bcp UNC G8Updated: July 22, 2026