Hex Washer Head SAE J78

IFI and SAE Standard for American market.
Construction screw for fastening roofing and cladding to light section steel.

• #6-20 × 3/8″
• #6-20 × 1/2″
• #6-20 × 5/8″
• #8-18 × 1/2″
• #8-18 × 5/8″
• #8-18 × 3/4″
• #8-18 × 1″
• #10-16 × 5/8″
• #10-16 × 3/4″
• #10-16 × 1″
• #10-16 × 1-1/4″
• #10-16 × 1-1/2″
• #12-14 × 3/4″
• #12-14 × 1″
• #12-14 × 1-1/4″
• #12-14 × 1-1/2″
• #14-14 × 3/4″
• #14-14 × 1″
• #14-14 × 1-1/4″
• #14-14 × 1-1/2″