Holo-krome 78098 Hex Socket Cap Screw 3/8-16 Unc 18-8

Product Description

The HOLO-KROME 78098 is a hex socket cap screw in 3/8-16 UNC thread with a 1-inch length under head. It features a 5/16-inch hex drive socket and is manufactured from 18-8 stainless steel with a bright, uncoated finish. The fully threaded shank provides consistent clamping along the entire length. This fastener meets ASME B18.3 and ASTM F837 standards, making it appropriate for mechanical assemblies, equipment fabrication, and industrial maintenance applications where corrosion resistance and dimensional accuracy are required. It is commonly installed by maintenance technicians, millwrights, and general contractors working with stainless fasteners.

The 78098 is suited for use in equipment assemblies, structural fixtures, and industrial machinery where a flush or low-profile head is required. The 3/8-16 UNC coarse thread pattern is widely used in general mechanical applications and is compatible with standard 3/8-16 threaded inserts, nuts, and tapped holes. The 18-8 stainless steel construction offers solid resistance to moisture and mild corrosion, making it appropriate for both indoor and outdoor environments including light marine or food-service adjacent applications.

Key Features

• 3/8-16 UNC coarse thread for broad compatibility with standard hardware
• 1-inch length under head for precise fastening depth control
• 5/16-inch hex socket drive for use with standard Allen or hex keys
• Fully threaded shank provides maximum thread engagement
• 18-8 stainless steel construction with bright uncoated finish for corrosion resistance
• Meets ASME B18.3 and ASTM F837 dimensional and material standards

Compatibility

Designed as an OEM-style replacement or standard-spec fastener for any application requiring a 3/8-16 UNC hex socket cap screw with a 1-inch length under head in 18-8 stainless steel, conforming to ASME B18.3 and ASTM F837.

Installation Notes

Installation requires a 5/16-inch hex key or Allen driver. Ensure the mating tapped hole or nut is clean and free of debris before threading. Apply appropriate anti-seize compound when installing stainless steel fasteners into stainless steel tapped holes to prevent galling. Torque to values consistent with 3/8-16 UNC stainless steel fastener specifications from the relevant engineering reference or project specification.