Jam nuts are slightly thinner than normal nuts. Usually two are used together to sandwich a washer or some other mount on top of a cylinder.
Bolt Base A2 Stainless Steel Half Lock Nuts Jam Nuts M6 X 1.0mm Pitch - 5: : Industrial & Scientific
Reduced Flange Jam Nut Receptacles, Products
Thread Size:1/2-13; External Hex Drive Size: 3/4 Width from point to point: 0.866 inch (max); Thickness: 0.323 inch (max); Meets ASME B18.2.2
1/2-13 UNC Stainless Steel Thin Hex Nuts Hexagon Jam Nuts, 304 Stainless Steel 18-8, Full Thread, Coarse Thread, 10 PCS
Type 18-8 Stainless Steel Size 3/4-16 Hex Jam Nuts
1-16 Jam Nut, Right Hand
1/4-in x 20 Zinc-plated Steel Jam Nut (4-Count)
Hillman 1/4-in x 20 Zinc-plated Steel Jam Nut (4-Count)
D38999 Jam Nut Socket Wrench
Broaching Male Mild Steel Hex Jam Nut, 316, Size: M6 at Rs 5/piece in Mumbai
Atomic Aquatics, Jam Nut
Buy Coupling with jam nut-Geka online
Jam Nut – Ballistic Fabrication
Hex Nut and Hex Jam Nut - China Hex Nuts, Hex Jam Nuts