# Prime-Line #4-40 Grade 2 Zinc Plated Steel Nylon Insert Lock Nuts 50-Pack)

**Brand:** [Prime-Line](https://shop.coreranger.com/brands/Prime-Line)
**SKU:** 9074800
**Price:** $6.08 · in stock
**URL:** https://shop.coreranger.com/product/prime-line-4-40-grade-2-zinc-plated-steel-nylon-insert-lock-nuts-50-pack-310346309

## Specifications

| Spec | Value |
|---|---|
| Size | #4 |
| Grade | Grade 2 |
| Model # | 9074800 |
| Internet # | 310346309 |
| Returnable | 90-Day |
| Store SKU # | 1004524296 |
| Thread Style | Coarse Thread |
| Fastener Type | Lock Nut |
| Finish Family | Metallic |
| Fits Bolt Size | #4 |
| Fastener Plating | Uncoated |
| Outside Diameter | 4 in |
| Package Quantity | 50 |
| Fastener Material | Carbon Steel |
| Thread Pitch (mm) | N/A - Inches Fastener |
| Measurement System | Inches |
| Product Weight (lb.) | 0.067 lb |
| Fastener Callout Size | #4-40 |
| Threads Per Inch (TPI) | 40 TPI |

## Description

Lock nuts (or locknuts) feature a nylon insert that grips onto threads and resists loosening due to vibration. It is best to only use each nut once as its holding power is reduced if reused. They should not be used in extremely high heat or in certain chemical environments as that could weaken the plastic insert.

• Installs easily with most wrenches
• Designed to be used with the same sized screw
• Steel construction offers long-lasting use and solid performance