Value Collection C89621 Hex Cap Screw 9/16-12 X 2-3/4 in Grade 8

Product Description

The Value Collection C89621 is a 9/16-12 x 2-3/4 inch hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 is the highest common SAE fastener grade for inch-series bolts, rated for high-strength structural and mechanical applications where tensile strength and hardness are critical. The partially threaded shank provides a smooth bearing surface that resists shear loads in bolted joints. This screw conforms to ASME B18.2.1, the governing standard for inch-series hex cap screws, ensuring dimensional consistency across interchangeable assemblies. Sold in a package of 10.

This fastener is suited for heavy-duty bolted connections in industrial machinery, HVAC equipment frames, structural steel assemblies, and mechanical equipment mounting. The 9/16-12 UNC thread pitch and Grade 8 rating make it a common choice wherever a high-clamp-load, partially threaded bolt is specified. The zinc yellow dichromate coating provides moderate corrosion resistance appropriate for interior and protected exterior environments. Maintenance technicians, millwrights, and mechanical contractors typically use this screw in equipment repair, fabrication, and assembly work.

Key Features

• Grade 8 steel construction for high tensile strength in demanding mechanical joints
• 9/16-12 UNC thread form — standard coarse-thread series for broad hardware compatibility
• Partial threading preserves a smooth shank for shear-load resistance
• Zinc yellow dichromate finish provides moderate corrosion protection
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability
• Sold in a pack of 10 with a minimum order quantity of 1

Compatibility

Designed as a standard inch-series hex head cap screw for any application requiring a 9/16-12 UNC partially threaded fastener meeting ASME B18.2.1 dimensional specifications.

Installation Notes

Use the correct 15/16 inch hex socket or wrench for driving this fastener. Apply torque values per the applicable equipment service manual or a Grade 8 fastener torque table for 9/16-12 UNC threads — do not estimate. Ensure mating threads are clean, undamaged, and free of debris before installation. Always de-energize, lock out, and tag out any equipment before fastener replacement or removal.