Description
Hex Head Cap Screws Grade 8 Steel Plain Fine Thread 1 3/8-12 x 13" (PT) are engineered for high-strength fastening in demanding machinery and equipment installations. Made from Grade 8 steel with a plain finish and fine thread, these screws deliver superior load bearing and precise adjustments in rugged environments.
Designed for durability, the 1 3/8-12 x 13" size combines a robust major diameter with a fine thread profile for improved mating, reduced loosening, and smoother tapping in thick materials. The hex head enables easy tightening with standard wrenches, even in tight spaces.
Key features
- Material: Grade 8 steel for high tensile strength and reliability
- Finish: Plain (uncoated) for clean, corrosion-resistant assembly in suitable environments
- Thread type: Plain fine thread for precise adjustment and smooth, secure engagement
- Size: 1 3/8" diameter, 12 TPI, 13" length
- Head style: Hex head for fast, tool-friendly installation
- Designation: PT indicates plain thread
Specifications
- Head type: Hex
- Material: Grade 8 steel
- Finish: Plain
- Thread: Fine thread, 12 TPI
- Size: 1 3/8"-12 x 13"
- Application: Heavy-duty fastening for machinery, equipment, and industrial assemblies
For optimal performance, pair these screws with compatible Grade 8 nuts and washers, and follow standard torque recommendations for high-strength fasteners. This screw is ideal for applications requiring durable, long-lasting, high-load fastening without the need for coating or plating.
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