UCAN U-DRILLS self drilling screws are engineered for consistent quality and speed. They are cold formed with rolled thread for superior strength and fast drilling performance in metal base materials up to 0.75 inch thick. U-DRILLS screws are available in a wide variety of types and sizes to suit most applications. UCAN also offers timely delivery on special sizes made to order. U-DRILLS screws meet SAE J78-1998 standard requirements.
Specifications:
- Size: 1/4-14 x 2
- Point: 3
- Drilling Capacity: .220/4 ga
- Case Wt.: 36
- Case Qty.: 1500
- Min. Tensile Capacity (lbf): 3850
- Min. Shear Capacity (lbf): 2600
- Min. Torsional Strength (lb-in): 150
- Recommended Drill Speed (RPM): 1000-1800
Material:
- Cold heading quality wire
- Carbon steel: AISI C1022
- Stainless steel AISI 410
Heat Treatment:
- Tempered and case hardened
- Case depth: Size #6 - 0.002" -0.007", Size#8-12 - 0.004"- 0.009", Size 1/4" - 0.005" -0.011"
Surface Hardness:
- 50-56 HRC equivalent
Core Hardness:
- 32-40 HRC equivalent
Corrosion Protection:
- Zinc plating - 0.0002" as per ASTM F 1941-00
- Ruspro I coating - 1000 hrs salt spray resistance
Installations:
- U-Drills self drilling screws are installed into the base material (steel/aluminum) without pre-drilling. The length of the forged drill point determines the thickness of material to be drilled. For effective drilling use an 1800 – 2500 RPM electric screw gun.