MALCO
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Frequently asked questions
Common questions about MALCO from 3G Electric.
What is the bending capacity of the Malco MB48A manual straight brake?
The Malco MB48A manual straight brake is rated for 22-gauge sheet metal. It has a maximum bending width of 48 inches and a maximum bending angle of 135 degrees. The brake is hand-lever-operated, making it suitable for on-site bending of ducts, flashings, and roof trim. The MB48B model is similar but includes an angle gauge for repeatable bends. Both models are portable and intended for field use where a powered brake is not practical. 3G Electric lists these brakes with manufacturer part numbers for verification.
What sizes of Malco self-piercing screws does 3G Electric carry?
3G Electric carries Malco self-piercing screws in #7 and #8 thread sizes. Lengths range from 1/2 inch to 2 inches, including 1/2 in, 3/4 in, 1 in, 1-1/2 in, and 2 in. These screws have a slotted hex washer head, a 1/4-inch drive size, and a zinc-plated steel finish. Pack quantities are 250, 500, or 1,000 pieces depending on the SKU. They are designed for fastening sheet metal to metal framing without pre-drilling, commonly used in HVAC ductwork and metal roofing.
Are Malco manual straight brakes suitable for HVAC ductwork?
Yes. The Malco manual straight brakes, such as the MB48A and MB48B, are used for forming ducts, flashings, and roof trim. Their 22-gauge capacity and 48-inch maximum bending width allow for typical HVAC sheet metal work. The hand-lever operation and portable design make them suitable for on-site fabrication and repair. The MB48B includes an angle gauge, which helps maintain consistent bend angles. These brakes are not intended for heavy-gauge plate or high-volume production, but they are appropriate for field work and small-shop use.
What is the drive size for Malco hex washer sheet metal screws?
Malco hex washer sheet metal screws in the 3G Electric catalog have a 1/4-inch drive size. They feature a slotted hex washer head, which allows driving with either a hex driver or a flat-blade screwdriver. The screws are steel with a zinc-plated finish for corrosion resistance. They are self-piercing, meaning they can fasten sheet metal to metal framing without pre-drilling. This drive size is common in HVAC and roofing applications where a standard 1/4-inch hex driver is used.
Does 3G Electric provide datasheets for Malco products?
3G Electric provides datasheets and manufacturer part numbers for the Malco products it lists. These documents include specifications such as capacity, bending width, bending angle, screw length, thread size, drive size, and pack quantity. Technical buyers can use the part numbers to cross-reference with Malco's published literature. 3G Electric does not manufacture Malco products; it distributes them and supports the line with logistics and quotation services. For specific documentation requests, contact 3G Electric directly.
What materials are Malco self-piercing screws made of?
Malco self-piercing screws in the 3G Electric catalog are made of steel with a zinc-plated finish. The zinc plating provides corrosion resistance for typical indoor and sheltered outdoor environments. The screws have a slotted hex washer head and a 1/4-inch drive size. They are available in #7 and #8 thread sizes and lengths from 1/2 inch to 2 inches. These screws are intended for fastening sheet metal to metal framing without pre-drilling, commonly in HVAC ductwork, metal roofing, and general sheet metal assembly.