Value Collection 88547245 Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 88547245 is a hex socket cap screw designed for high-strength bolted connections in industrial, mechanical, and structural applications. The fastener features a 7/8-9 UNC thread form and a 3/4-inch hex drive, requiring a standard hex key or Allen-type driver for installation. At 4 inches in length under the head with partial threading, it provides adequate thread engagement while leaving a smooth shank section for shear-load applications. The alloy steel construction and black oxide finish give it good tensile strength and moderate corrosion resistance in dry or lightly oiled environments. It weighs approximately 0.846 pounds per piece.

This cap screw is suited for machinery assembly, jig and fixture fabrication, tooling plates, and general industrial fastening where a flush or recessed-head socket drive is required. The 7/8-9 UNC coarse thread pitch makes it appropriate for use in steel or iron tapped holes where quick installation and strong clamping force are priorities. It is commonly used by machinists, millwrights, maintenance technicians, and fabricators working on heavy equipment or mechanical sub-assemblies.

Key Features

• 7/8-9 UNC coarse thread for reliable engagement in steel and iron tapped bores
• Partially threaded shank provides a smooth grip zone for shear-load resistance
• 3/4-inch hex socket drive for torque application with standard hex keys or power drivers
• Alloy steel construction delivers high tensile and yield strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• 4-inch length under head accommodates thicker workpieces and stacked material

Compatibility

Designed as a standard 7/8-9 UNC hex socket cap screw suitable for use in any tapped hole or threaded insert conforming to the 7/8-9 UNC thread standard per ASME B18.3.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/4-inch hex key or socket driver. De-energize or lock out any machinery before fastener service in accordance with applicable LOTO procedures. Apply thread lubricant or anti-seize as required by the joint design to achieve accurate clamp load. Do not use an impact driver without a torque-limiting mechanism, as over-torquing alloy socket cap screws can cause thread stripping or fastener failure.