---
product_id: 741312222
title: "Wensilon(20 pcs) 1/4\"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts"
brand: "wensilon"
price: "S/.108"
currency: PEN
in_stock: true
reviews_count: 8
category: "Wensilon"
url: https://www.desertcart.pe/products/741312222-wensilon-20-pcs-1-4-20-premium-stainless-steel-drop
store_origin: PE
region: Peru
---

# 20 pcs premium anchors stainless steel corrosion-resistant 1/4"-20 thread size Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts

**Brand:** wensilon
**Price:** S/.108
**Availability:** ✅ In Stock

## Summary

> 🔩 Secure your projects with stainless steel strength — don’t settle for less!

## Quick Answers

- **What is this?** Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts by wensilon
- **How much does it cost?** S/.108 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/741312222-wensilon-20-pcs-1-4-20-premium-stainless-steel-drop)

## Best For

- wensilon enthusiasts

## Why This Product

- Trusted wensilon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium stainless steel resists rust and corrosion, guaranteeing long-term durability.
- • **Precision Fit:** Optimized for 1" hole depth and 3/8" diameter, perfectly matching 1/4-20 bolts.
- • **Easy Pro Installation:** Simple 3-step setup with pre-drill, set tool, and hammer for a secure, forced expansion fit.
- • **Solid Grip, Zero Slip:** Knurled design ensures maximum hold in solid concrete for heavy-duty projects.
- • **Versatile Application:** Ideal for anchoring fixtures, machine screws, and threaded rods into concrete and masonry.

## Overview

Wensilon’s 20-piece 1/4"-20 stainless steel drop-in anchors deliver professional-grade, corrosion-resistant fastening for solid concrete. Designed with a knurled surface and internal forced expansion, these anchors provide a rock-solid hold for bolts and threaded rods, making them the go-to choice for durable, reliable installations in industrial and home projects alike.

## Description

Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts: desertcart.com: Industrial & Scientific

Review: 12 mm bit - They work very well most reviews that are bad are probably because it says 1/2” bit get a 12mm bit and a anchor set punch they will not hold in concrete without using the punch drill hole drop in set punch slap with hammer also if you are going to move back and forth what’s being installed like me (tire machine) get 3/8-16 x 1/2” set screws so the threads stay clean
Review: Good product, easy to use. - These work very well in concrete and stucco. They are a great value. If you were to buy they at the big box stores, you would pay three times the price. I use these for all kinds of projects. My latest use was to mount a retractable hose reel to my house. You do need masonry drill bits to drill the holes to put these into. Also, it would be nice to have a hammer drill to speed up the process.

## Features

- [Package Include]: In this package, you can get 20pcs 1/4"-20 premium stainless steel concrete knurled drop in anchors, sufficient quantity can fully meet your different needs.
- [RELIABLE AND DURABLE]:Our knurled drop-in-anchor are made of high quality stainless steel, which is corrosion and rust resistant, making this drop in anchors more durable. Stainless steel material is strong and powerful, can be fixed on concrete very firmly.
- [Function] 1/4" Inch premium stainless steel material knurled drop in anchors: 1" hole depth and 3/8" hole diameter, use with 1/4-20 bolt.
- [Common Use]: The knurled drop in anchors are greatly ideal for solid concrete, can be used for anchoring into solid concrete. They are commonly used with machine screws, bolts and threaded rod to anchor fixtures to concrete and other masonry materials.
- [Installation Steps]: First, you need to pre-drill a hole; second, install crimped knurled side down in a pre-drilled hole; third, need the set tool, insert the thinner part of the tool into the anchor and the back is struck with a hammer to make sure anchor are properly secured, which can cause the anchor to expand and embed itself in the concrete for a tight fit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1TT18K5 |
| Best Sellers Rank | #6,951 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Drop-In Anchors |
| Date First Available | April 16, 2024 |
| Finish Type | Plain |
| Head Style | Knurled |
| Item Diameter | 0.25 Inches |
| Item Weight | 4.6 ounces |
| Manufacturer | Wensilon |
| Number of Items | 20 |
| Number of Pieces | 20 |
| Shape | Round |
| Thread Size | 0.25 inches |

## Product Details

- **Brand:** Wensilon
- **Color:** SS
- **Fastener Type:** Bolt, Solid
- **Material:** Stainless Steel
- **Size:** 1/4"-20

## Images

![Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 1](https://m.media-amazon.com/images/I/71VeswBbuUL.jpg)
![Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 2](https://m.media-amazon.com/images/I/61Gb8IvJDvL.jpg)
![Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 3](https://m.media-amazon.com/images/I/71+pIb0MdyL.jpg)
![Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 4](https://m.media-amazon.com/images/I/71+U+OwEyGL.jpg)
![Wensilon(20 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 5](https://m.media-amazon.com/images/I/51m0bWC2XxL.jpg)

## Available Options

This product comes in different **Color, Size, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 12 mm bit
*by J***S on March 2, 2026*

They work very well most reviews that are bad are probably because it says 1/2” bit get a 12mm bit and a anchor set punch they will not hold in concrete without using the punch drill hole drop in set punch slap with hammer also if you are going to move back and forth what’s being installed like me (tire machine) get 3/8-16 x 1/2” set screws so the threads stay clean

### ⭐⭐⭐⭐⭐ Good product, easy to use.
*by G***E on July 11, 2025*

These work very well in concrete and stucco. They are a great value. If you were to buy they at the big box stores, you would pay three times the price. I use these for all kinds of projects. My latest use was to mount a retractable hose reel to my house. You do need masonry drill bits to drill the holes to put these into. Also, it would be nice to have a hammer drill to speed up the process.

### ⭐⭐⭐⭐⭐ Great Drop-In Anchors!!!!
*by L***. on March 7, 2026*

These were just what the doctor ordered. I needed to install a tent on my driveway and didn't want the tent to blow over with the wind. On dirt, I would have hammered some steaks in, but on concrete, I didn't want to use Tapcon Concrete Screws. I wanted something I could put in and take out without continually making holes in the concrete or worse, breaking it up. These went in great. Drilled, dropped them in and then screwed the included machine screw and they held the tent up under heavy winds. Perfect for the application!.

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**Shop now:** [https://www.desertcart.pe/products/741312222-wensilon-20-pcs-1-4-20-premium-stainless-steel-drop](https://www.desertcart.pe/products/741312222-wensilon-20-pcs-1-4-20-premium-stainless-steel-drop)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-21*