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Nylon-Insert Locknuts
Versatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
High-Strength Steel
 |
Rated Grade 8 or Class 10, these locknuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
Small Pack | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Wd., mm | Ht., mm | Fastener Strength Grade/Class | Insert Max. Temp., ° F | Certificate Type | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||
| M39 × 4 mm | 60 | 39 | Class 10 | 185 | Material Certificate | 1 | 94645A360 | 000000 | ||
Medium-Strength Steel
|
These Grade 5, Grade C, or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
Small Pack | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Wd., mm | Ht., mm | Fastener Strength Grade/Class | Insert Max. Temp., ° F | Certificate Type | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||
| M39 × 3 mm | 60 | 39 | Class 8 | 185 | Material Certificate | 1 | 90576A523 | 000000 | ||
