Hex jam nuts are 30% thinner than finished hex nuts to offer an advantage in low clearance applications. Available in a range of metric sizes, materials, & coatings.
DIN 439A & DIN 439b Copper Hexagon Thin Nuts
ASTM A563M 10S Metric Heavy Hex Nuts - China Dingshen Metalworks
Hex Jam Nuts & Heavy Hex Jam Nuts Technical Guides
3/4 X 3/4-16 Economy Male LH Rod End CML-12 – QS Components, Inc.
moped studs + nuts + more
Cox Hardware and Lumber - Metric Hex Jam Nut (Sizes)
Everbilt M8-1.25 Stainless Steel Metric Hex Nut (2-Piece per Bag) 842328 - The Home Depot
These high-quality metric jam nuts work with our Aurora Metric Rod Ends. Plated steel with right-hand (standard) or left-hand (reverse) threads. Sold
Metric Jam Nut (Non-Locking Check Nut)
Hex & Hex Jam Nuts