Value Collection R57600542 Shoulder Screw 3/8 in 18-8 Ss

Product Description

The VALUE COLLECTION R57600542 is a shoulder screw machined from 18-8 stainless steel and left uncoated for a clean, corrosion-resistant finish. The shoulder measures 0.375 inches in diameter and 0.25 inches in length, providing a precise bearing surface for rotating or sliding components. The threaded portion is 5/16-18 UNC, driven by a 3/16-inch hex socket. The head stands 0.25 inches tall with a diameter of 0.5625 inches. This fastener is suited to mechanical assemblies, jigs, fixtures, and any application requiring a hardened, dimensionally consistent shoulder for alignment or pivot functions.

Shoulder screws of this configuration are common in light mechanical assemblies, manufacturing fixtures, tooling, and industrial equipment where a fixed-diameter shoulder acts as a shaft, pivot, or spacer. The 18-8 stainless steel construction makes this screw a practical choice in environments with mild moisture or chemical exposure. The compact shoulder length and standard UNC threading allow integration into close-tolerance bores in aluminum, steel, and plastic components. Machinists, maintenance mechanics, and assembly technicians are the typical installers.

Key Features

• 0.375-inch shoulder diameter provides a precise, hardened bearing surface for rotating or sliding parts
• 0.25-inch shoulder length suits shallow bore and thin-plate applications
• 5/16-18 UNC thread for broad compatibility with standard tapped holes
• 18-8 stainless steel construction resists corrosion without a surface coating
• 3/16-inch hex socket drive allows use of standard allen keys and hex bit drivers
• Uncoated finish — no plating to flake or interfere with tight tolerances

Compatibility

Designed as a standard shoulder screw for mechanical assemblies, fixtures, and tooling that require a 0.375-inch shoulder diameter and 5/16-18 UNC threaded engagement.

Installation Notes

Installation requires a 3/16-inch hex key or allen driver. Ensure the receiving bore is matched to the 0.375-inch shoulder diameter for proper fit and alignment. Thread the fastener into a tapped 5/16-18 hole, taking care not to overtighten and damage the threads in softer base materials such as aluminum or plastic. De-energize and lock out any machinery before replacing or adjusting shoulder screws in live equipment.