3/8 in. x 2‑1/2 in. Hex Cap Screw, Grade 8 — Model 220139 (50 Count)

The Model 220139 Grade 8 hex cap screw is a high‑strength fastening solution built for demanding applications where superior clamping force, durability, and reliability are essential. Featuring a 3/8 in. diameter and a longer 2‑1/2 in. length, this fastener provides increased thread engagement for thicker assemblies and stacked components, making it well suited for high‑stress mechanical and industrial use.

Manufactured from heat‑treated alloy steel, this Grade 8 hex cap screw delivers exceptional tensile and yield strength, allowing it to withstand heavy torque, vibration, and repeated loading without stretching or failure. The precision‑formed hex cap head ensures solid tool engagement for efficient installation, while rolled threads promote smooth assembly and consistent holding power. Packaged in a 50‑count box, this product offers an ideal balance between jobsite convenience and controlled inventory.