Value Collection 330450PS Hex Jam Nut 9/16-18 Unf Grade 2

Product Description

The VALUE COLLECTION 330450PS is a 9/16-18 UNF hex jam nut machined from Grade 2 steel with a zinc-plated finish. Jam nuts are thin profile nuts used to lock a standard hex nut in place or to secure a fastener in applications where a full-height nut would not fit. At 5/16 inch tall with a 7/8 inch width across flats, this nut threads onto standard 9/16-18 right-hand UNF fasteners. The zinc plating provides basic corrosion resistance for general indoor and light-duty outdoor applications. This part is sold individually, with a minimum order quantity of 25 pieces.

This jam nut is suited for general mechanical assembly, maintenance, and fabrication work across HVAC, plumbing, electrical, and light industrial trades. It is commonly used as a locknut on threaded rod, valve stems, and panel hardware where a reduced-height fastener is needed. The 9/16-18 UNF thread is a fine-thread designation, offering stronger thread engagement per inch compared to coarse-thread equivalents, making it a frequent choice in precision assemblies and vibration-prone environments.

Key Features

• 9/16-18 UNF fine right-hand thread for strong thread engagement
• Grade 2 steel construction for general-purpose fastening applications
• Zinc-plated finish for basic corrosion protection
• Jam nut profile at 5/16 inch height — lower profile than a standard hex nut
• 7/8 inch width across flats for use with standard 7/8 inch wrenches or sockets
• Sold individually; minimum order quantity of 25 pieces

Compatibility

Designed for use with 9/16-18 UNF threaded fasteners, threaded rod, and hardware requiring a right-hand fine-thread jam nut in Grade 2 steel.

Installation Notes

Installation requires a standard 7/8 inch open-end wrench, box wrench, or socket. When used as a locknut, thread the jam nut against a primary nut and tighten the two nuts against each other to prevent loosening. Do not exceed the load ratings appropriate for Grade 2 steel fasteners. Ensure threads are clean and free of debris before installation to avoid cross-threading.