Jam nuts are low-profile nuts that are half as tall as a standard hex nut. It's often used as a type of locknut where it is jammed up against a
1/4 - Nuts - Fasteners - The Home Depot
3/8 in - Jam Nuts - Nuts - The Home Depot
Electrical product information - 1/4-20 Nylon Insert L/N Zc-um 100 : ElectricSmarts Network
Uxcell M4 x 0.7-Pitch 12mm Length 304 Stainless Steel Metric Hex Coupling Nut, 20-Pack
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Type 18-8 Stainless Steel Size 1/4-20 Hex Jam Nuts
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1/4-20 Whiz-lock Nut Zinc Plated (Box of 100) - Albany Steel & Brass Corp
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Nylon-Inserted Lock Nut Pack Chrome 1/4-20 UNC - Custom Chrome Europe
