#8 18 X 1/2 Phillip Round Tap Screw (M)
#8 18 X 1/2 Phillip Round Tap Screw (M)
These #8 x 1/2" Phillip round head tapping screws are engineered for fast, reliable fastening of metal components. Their thread-forming design creates its own mating threads in pre-drilled holes, eliminating the need for tapping and streamlining assembly in fabrication and MRO projects.
- SAE J78 Compliant
- Zinc Plated (ASTM B633)
- Phillips Head
- Metal-to-Metal Fastening
Constructed from high-strength, case-hardened carbon steel, our #8-18 x 1/2" Phillip tapping screws are built for durability and consistent performance. The zinc plating, applied according to ASTM B633 standards, provides excellent corrosion resistance for indoor and moderate outdoor applications. These self-tapping fasteners are designed to meet SAE J78 specifications, ensuring they form precise, secure threads when driven into metal, sheet metal, and other durable materials, providing strong pull-out resistance and a secure, vibration-resistant connection.
Ideal for a wide range of industrial applications, these round head tapping screws are a staple in metal fabrication, HVAC system assembly, electrical enclosure manufacturing, and general maintenance, repair, and operations (MRO). The Phillips drive offers reliable torque transfer for efficient installation with standard drivers. Their versatility makes them a go-to choice for securing brackets, panels, and components in both commercial and industrial settings, offering a dependable solution for fast-paced production lines and field repairs.
Specifications
- Material: Hardened Carbon Steel
- Standards: SAE J78
- Strength/Tensile: Governed by performance standards; not rated by tensile strength.
- Dimensions: Size: #8, Threads Per Inch: 18, Length: 1/2"
- Finish: Zinc Plated per ASTM B633
- Certifications: Certificate of Conformance to SAE J78 available upon request.
Applications
- HVAC & Ductwork: Securing sheet metal ducts, plenums, and mounting brackets.
- Electrical & Enclosures: Assembling electrical boxes, panels, and mounting components.
- Metal Fabrication: Fastening light-gauge metal frames, clips, and assemblies.
- Automotive & MRO: General repairs, attaching trim, and securing interior components.
Target Users
Used by fabricators, MRO technicians, HVAC installers, and electricians for projects requiring fast and reliable fastening into metal without pre-tapping.
Finish Options
Our standard in-stock finish for these tapping screws is a corrosion-resistant Zinc Plating applied per ASTM B633 standards. Other finishes may be available via special order for bulk quantities.
How to Measure
To specify tapping screws, provide the nominal size (diameter, e.g., #8), threads per inch (TPI, e.g., 18), and length (measured from under the head to the tip, e.g., 1/2"). Also confirm the head style (Round) and drive type (Phillips).
Example: #8-18 x 1/2" Phillip Round Head Tapping Screw, Zinc Plated
Order Checklist
- Product name and required dimensions (#8-18 x 1/2")
- Head Style (Round) and Drive Type (Phillips)
- Surface finish requirements (Standard: Zinc Plated)
- Quantity required (Box or Bulk)
- Certifications required (Certificate of Conformance to SAE J78)
- Special handling or delivery requirements
Quick Facts
- Product
- #8 18 X 1/2 Phillip Round Tap Screw (M)
- Material
- Hardened Carbon Steel
- Standards
- SAE J78
- Key Properties
- Self-tapping, zinc-plated for corrosion resistance, Phillips round head for general purpose fastening.
- Primary Applications
- Metal Fabrication, MRO, HVAC, Electrical Enclosures
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock a comprehensive range of tapping screw sizes, from #6 to #14 in various lengths. Different head styles (Pan, Hex Washer) and drive types are also available from our Los Angeles warehouse.
Custom sizes and cutting services are available.
Contact for Sizing