Zinc-Plated UNF Slotted Flat Head Machine Screw in carbon steel, zinc-plated inch thread. 42 sizes available; sold by unit.
| SKU | Size | Price | Status | Qty | |
|---|---|---|---|---|---|
| VT-1975 | 1/4-28 X 3/8 | $ 260 | In stock | ||
| VT-1976 | 1/4-28 X 1/2 | $ 275 | In stock | ||
| VT-1977 | 1/4-28 X 5/8 | $ 302 | In stock | ||
| VT-1978 | 1/4-28 X 3/4 | $ 337 | In stock | ||
| VT-1979 | 1/4-28 X 1 | $ 391 | In stock | ||
| VT-1980 | 1/4-28 X 1.1/4 | $ 436 | In stock | ||
| VT-1981 | 1/4-28 X 1.1/2 | $ 481 | In stock | ||
| VT-1982 | 1/4-28 X 1.3/4 | $ 536 | In stock | ||
| VT-1983 | 1/4-28 X 2 | $ 573 | In stock | ||
| VT-1984 | 5/16-24 X 1/2 | $ 603 | In stock | ||
| VT-1985 | 5/16-24 X 3/4 | $ 680 | In stock | ||
| VT-1986 | 5/16-24 X 1 | $ 715 | In stock | ||
| VT-1987 | 5/16-24 X 1.1/4 | $ 760 | In stock | ||
| VT-1988 | 5/16-24 X 1.1/2 | $ 794 | In stock | ||
| VT-1989 | 5/16-24 X 1.3/4 | $ 987 | In stock | ||
| VT-1990 | 5/16-24 X 2 | $ 1.064 | In stock | ||
| VT-1991 | 3/8 X 3/4 | $ 818 | In stock | ||
| VT-1992 | 3/8 X 1 | $ 938 | In stock | ||
| VT-1993 | 3/8 X 1.1/4 | $ 1.022 | In stock | ||
| VT-1994 | 3/8 X 1.1/2 | $ 1.131 | In stock | ||
| VT-1953 | 6-32 X 5/16 | $ 56 | In stock | ||
| VT-1954 | 6-32 X 3/8 | $ 62 | In stock | ||
| VT-1955 | 6-32 X 1/2 | $ 82 | In stock | ||
| VT-1956 | 6-32 X 5/8 | $ 86 | In stock | ||
| VT-1957 | 6-32 X 3/4 | $ 92 | In stock | ||
| VT-1958 | 6-32 X 7/8 | $ 101 | In stock | ||
| VT-1959 | 6-32 X 1 | $ 109 | In stock | ||
| VT-1960 | 6-32 X 1.1/8 | $ 124 | In stock | ||
| VT-1961 | 6-32 X 1.1/4 | $ 124 | In stock | ||
| VT-1962 | 6-32 X 1.1/2 | $ 131 | In stock | ||
| VT-1963 | 6-32 X 1.3/4 | $ 146 | In stock | ||
| VT-1964 | 6-32 X 2 | $ 161 | In stock | ||
| VT-1965 | 10-32 X 3/8 | $ 135 | In stock | ||
| VT-1966 | 10-32 X 1/2 | $ 144 | In stock | ||
| VT-1967 | 10-32 X 5/8 | $ 161 | In stock | ||
| VT-1968 | 10-32 X 3/4 | $ 178 | In stock | ||
| VT-1969 | 10-32 X 7/8 | $ 185 | In stock | ||
| VT-1970 | 10-32 X 1 | $ 204 | In stock | ||
| VT-1971 | 10-32 X 1.1/4 | $ 236 | In stock | ||
| VT-1972 | 10-32 X 1.1/2 | $ 272 | In stock | ||
| VT-1973 | 10-32 X 1.3/4 | $ 292 | In stock | ||
| VT-1974 | 10-32 X 2 | $ 318 | In stock |
Prices per unit, before VAT. Availability is confirmed in the formal quote.
| Material | acero al carbono |
| Finish | zincado |
| Thread system | pulgadas |
| Family | Stove & machine screws |
Zinc-Plated UNF Slotted Flat Head Machine Screw is a TECTUL reference for spare parts, equipment, and assemblies with fine inch thread requiring a slotted flat head. The actual lot reports carbon steel material, sold by unit, and zinc-plated inch thread family; in the technical sheet it is separated by slotted drive, flat head, zinc-plated finish, and fine-pitch inch sizes. To buy without errors, validate head, drive, diameter or pitch, usable length, and finish against the sample, drawing, or existing nut. ASME B18.6.3 is used as a public reference for inch machine screws; metric items are checked against ISO or DIN when required by the drawing. We do not publish a single torque or capacity because the result depends on base material, thickness, lubrication, coating, head bearing, vibration, grip length, and tightening method.
| Actual size from datos.json | Type | Head or point | Material | Sale unit |
|---|---|---|---|---|
| 1/4-28 X 3/8 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 1/2 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 5/8 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 3/4 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 1 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 1.1/4 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 1.1/2 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 1.3/4 | machine screw | slotted flat head | carbon steel | unit |
| 1/4-28 X 2 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 1/2 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 3/4 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 1 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 1.1/4 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 1.1/2 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 1.3/4 | machine screw | slotted flat head | carbon steel | unit |
| 5/16-24 X 2 | machine screw | slotted flat head | carbon steel | unit |
| 3/8 X 3/4 | machine screw | slotted flat head | carbon steel | unit |
| 3/8 X 1 | machine screw | slotted flat head | carbon steel | unit |
| 3/8 X 1.1/4 | machine screw | slotted flat head | carbon steel | unit |
| 3/8 X 1.1/2 | machine screw | slotted flat head | carbon steel | unit |
| 6-32 X 5/16 | machine screw | slotted flat head | carbon steel | unit |
| 6-32 X 3/8 | machine screw | slotted flat head | carbon steel | unit |
| 6-32 X 1/2 | machine screw | slotted flat head | carbon steel | unit |
| 6-32 X 5/8 | machine screw | slotted flat head | carbon steel | unit |
We dispatch to Bogotá, Medellín, Cali, Barranquilla, and all of Colombia. Request a quote via WhatsApp for this zinc-plated UNF slotted flat head machine screw indicating size, quantity, finish, delivery city, and a photo if you are replacing a sample.
The price depends on size, quantity, finish, and availability. TECTUL quotes by unit and confirms the reference before dispatch.
The flat head is used for lower projection or a countersunk seat. The slotted round head remains visible and differs by its bearing shape.
Thread by hand first to confirm that the pitch matches; if it binds, do not force the installation.
Send the complete size, quantity, material or finish, head type, delivery city, and a photo or drawing if you are replacing an existing part.
It depends on the coating and environment. For humidity, washdown, or frequent outdoor exposure, validate stainless steel or another specification before buying.
Yes. TECTUL dispatches to Bogotá, Medellín, Cali, Barranquilla, and other cities in Colombia depending on availability and carrier.
Updated: July 22, 2026
