5/16″ x 18 TPI x 1″ Full Thread Coarse Phillips Screw Zinc Plated

Description

Product Introduction
This 5/16 “x 18 TPI x 1” full thread coarse cross head galvanized screw produced by VANGUARD INDUSTRIAL is a short and highly adaptable machine tooth fastener that complies with the American UNC standard
Core parameters: Adopting the American made UNC coarse thread system, with a nominal diameter of 5/16 inches and 18 tooth pitches per inch length. The nominal length of the screw is only 1 inch, and the full thread design enables effective engagement of the screw throughout the entire process, suitable for through fastening scenarios of thin workpieces.
Structural characteristics: The standard cross disc head design is compatible with conventional cross screwdriver heads, and the large contact surface of the disc head can disperse fastening pressure, avoiding damage to the surface of thin workpieces due to pressure; The overall galvanizing and passivation treatment can effectively isolate water vapor and corrosive media, with excellent rust and corrosion resistance, and can be adapted to ordinary outdoor and humid working environments.
It is widely used in small mechanical equipment assembly, thin component connection, engineering matching and other scenarios that adopt the British standard. When used in conjunction with UNC standard nuts of the same specification, it can achieve stable high-strength fastening. Compared with fine thread threads of the same specification, it has higher shear strength and better disassembly efficiency.
🛠️ Usage
Preparation in advance
Confirm that the pre drilled hole size of the workpiece to be connected is compatible with a 5/16 inch screw, prepare corresponding UNC standard matching nuts, flat washers, spring washers, and compatible Phillips screwdrivers, and inspect the screw threads in advance for defects such as burrs, deformation, and coating detachment to ensure that the threads are clean and free of debris.
Installation operation
Insert the screw into the pre drilled hole of the workpiece, sequentially insert the flat washer and spring washer, and tighten the matching nut; When tightening, keep the direction of force applied by the screwdriver aligned with the axis of the screw, avoid tilting and applying force, and evenly lock until the disc head is completely attached to the surface of the workpiece.
Precautions
This product is a UNC standard thread in the American system and cannot be mixed with metric screws and nuts of the same diameter, otherwise there may be problems such as thread misalignment, slipping, and even connection failure; It is not recommended to use high-speed and high torque electric screwdrivers for locking to avoid thread locking and head slippage caused by too fast locking speed.