Key Benefits
-
Available in both coarse (UNC) and fine (UNF) thread types
-
Choose from zinc-plated mild steel or corrosion-resistant stainless steel
-
Helps prevent loosening of load cell and structural connections
-
Thin profile allows pairing with regular nuts for double-nut locking
-
Ideal for weighing systems, mounting assemblies, and industrial fasteners
-
Supports a wide range of thread sizes from ¼ inch to 1½ inch
Jam Nuts are thin, hex-shaped nuts designed to lock against a standard nut, forming a secure connection that resists loosening due to vibration or heavy load movement. Commonly used in load cell installations, structural assemblies, and industrial platforms, jam nuts serve as a reliable solution for enhancing fastening integrity.
Available in zinc-plated mild steel for general use or stainless steel for environments requiring corrosion resistance, these jam nuts offer compatibility with a wide range of equipment. They are an essential accessory for locking threaded rods, mounting brackets, clevis mounts, and load cell isolators.
With options in both coarse (UNC) and fine (UNF) threads, jam nuts from SellEton Scales provide unmatched versatility and long-lasting performance for any application that demands secure fastening.
Specifications – Mild Steel, Fine Thread
| Thread Size | Part # | |
|---|---|---|
| 1/4-28 UNF | 14639 | |
| 3/8-24 UNF | 14651 | |
| 1/2-20 UNF | 14664 | |
| 3/4-16 UNF | 14687 | |
| 1-12 UNF | 14702 | |
| 1-14 UNF | 14703 | |
| 1 1/4-12 UNF | 14708 | |
| 1 1/2-12 UNF | 14711 |
Specifications – Mild Steel, Coarse Thread
| Thread Size | Part # | |
|---|---|---|
| 1/4-20 UNC | 14636 | |
| 3/8-16 UNC | 14649 | |
| 1/2-13 UNC | 14661 | |
| 5/8-11 UNC | 14676 | |
| 3/4-10 UNC | 14686 | |
| 1-8 UNC | 14701 | |
| 1 1/4-7 UNC | 14707 |
Specifications – Stainless Steel, Fine Thread
| Thread Size | Part # | |
|---|---|---|
| 1/4-28 UNF | 14640 | |
| 1/2-20 UNF | 14665 | |
| 3/4-16 UNF | 14688 |
Specifications – Stainless Steel, Coarse Thread
| Thread Size | Part # | |
|---|---|---|
| 3/8-16 UNC | 14653 | |
| 1/2-13 UNC | 14662 | |
| 5/8-11 UNC | 14680 | |
| 3/4-10 UNC | 14690 |
Secure your assemblies and prevent loosening with high-quality Jam Nuts from SellEton Scales. Available in multiple materials and thread styles to suit every industrial application. Order by part number or contact us for help choosing the right option.
Free shipping: To the 48 contiguous states (residential, farm and rural deliveries may carry a carrier surcharge).
Ship date: Rice Lake Weighing Systems products ship on the maker's own lead time; we confirm the date when you order, or call 844-735-5386 before you buy.
Tracking: Emailed the moment your order ships.
Questions: (844) 735-5386 or info@selletonscales.com.








