Value Collection 3TSSF910C300 Flat Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION 3TSSF910C300 is a flat socket cap screw designed for fastening applications that require a flush or countersunk finish. It features a 3/8-inch hex socket drive and an 82-degree flat head profile, allowing the fastener to sit flush with or below the mating surface when installed in a properly countersunk hole. The screw is machined from 316 stainless steel, which provides strong resistance to corrosion in wet, marine, and chemically aggressive environments. The 5/8-11 UNC thread and 3-inch overall length make it suitable for medium-to-heavy structural and mechanical assemblies.

This fastener is commonly used in plumbing, marine hardware, food processing equipment, chemical handling systems, and industrial fabrication where corrosion resistance is a priority. The 316 stainless steel grade adds molybdenum content compared to 304, improving resistance to chlorides and salt water. It is appropriate for both indoor and outdoor installations where standard carbon steel fasteners would be prone to rust or staining. Installers in mechanical, plumbing, and general industrial trades regularly specify this grade for harsh-environment applications.

Key Features

• 82-degree flat head profile for flush or countersunk installations
• 3/8-inch hex socket drive for use with standard hex keys or Allen drivers
• 316 stainless steel construction for superior corrosion resistance in wet and chemical environments
• 5/8-11 UNC thread standard for broad compatibility with inch-system hardware
• 3-inch overall length suitable for medium-to-heavy fastening applications

Compatibility

Designed as a standard inch-series flat socket cap screw compatible with any 5/8-11 UNC threaded hole requiring a countersunk, flush-mount fastener in 316 stainless steel.

Installation Notes

Installation is typically performed by mechanical, plumbing, or fabrication tradespeople using a 3/8-inch hex key or socket driver. The receiving material must be properly countersunk at 82 degrees to achieve a flush seating surface. Verify thread engagement depth meets the requirements of the application before final tightening. Do not use impact tools at full torque without confirming thread condition and seating to avoid galling, which is common with stainless steel fasteners.