Sunex SX278C Air Punch and Flange Tool, 5/16" Capacity, 8 mm Punch, 360 Degree Swivel Head

Sunex SX278C Air Punch and Flange Tool, 5/16" Capacity, 8 mm Punch, 360 Degree Swivel Head

• Sunex SX278C is an air punch and flange tool for sheet metal work. It punches 8 mm holes and flanges panels up to common automotive gauge limits, with a head that swivels 360 degrees for access and a comfort grip for control. This is a stand alone tool, not a replacement part.
• Features:
  • 360 degree swivel head improves access so you can punch or flange panels in confined areas with better tool positioning.
  • 8 mm punch size with rated 5/16 inch capacity supports common plug weld holes and panel preparation tasks.
  • Flanging and punching capacities with listed throat depths help align and join sheet metal efficiently during repairs.
  • Comfort grip sleeve aids handling and reduces hand fatigue during repeated operation.
  • Pneumatic design with 90 psi operating pressure and 4 cfm average air consumption fits typical shop air systems.
  • General purpose sheet metal tool; not a replacement part designed for a specific SKU or assembly.
• Specifications:
  • Manufacturer: Sunex
  • Part Number: SX278C
  • Category: Air tools
  • Subcategory: Sheet metal punch and flange tools
  • Product Type / Function: Air operated punch and flange tool for sheet metal panels
  • Punch Hole Size: 8 mm
  • Capacity: 5/16 inch punch size; flanging suitable for common automotive sheet gauges
  • Throat / Capacity Details: Approximate flange throat depth 0.93 inch; flange capacity 0.55 inch; punch throat depth 0.6 inch; punch capacity 0.55 inch
  • Air Inlet: 1/4 inch NPT
  • Minimum Hose Size: 3/8 inch inside diameter
  • Recommended Air Pressure: 90 psi
  • Average Air Consumption: 4 cfm
  • Overall Length: 10 inch
  • Housing / Handle: Aluminum housing with comfort grip sleeve
  • System Compatibility / Application: For pneumatic punching and flanging of sheet metal in automotive and fabrication work; not a replacement part for a specific SKU
• The Air Punch and Flange Tool can also be referred to as air punch flange tool, 5/16 inch punch flange tool, sheet metal punch and flange tool, SX278C punch flange, and pneumatic panel flanging tool.

Sunex produces professional air tools and specialty service equipment for automotive and industrial applications, focusing on durable construction, ergonomic handling, and specifications suited to daily shop use.

Q: What hole size does the tool punch?
A: It punches 8 mm holes, equivalent to a 5/16 inch class plug weld size for panel work.

Q: What air supply is required?
A: Use a 1/4 inch NPT inlet with at least a 3/8 inch inside diameter hose, regulated to about 90 psi with approximately 4 cfm average air consumption.

Q: Does the head swivel for angled access?
A: Yes. The head swivels 360 degrees to improve access when punching or flanging in tight spaces.