---
product_id: 672364890
title: "3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack"
brand: "napredak"
price: "₨1201"
currency: SCR
in_stock: true
category: "Napredak"
url: https://www.desertcart.sc/products/672364890-3-8-concrete-anchors-3-1-2-in-hammer-drive
store_origin: SC
region: Seychelles
---

# Precise 3/8 x 3-1/2 in size Center-pin expansion tech Carbon steel strength 3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack

**Brand:** napredak
**Price:** ₨1201
**Availability:** ✅ In Stock

## Summary

> 🔩 Lock it down with power and precision — your concrete’s new best friend!

## Quick Answers

- **What is this?** 3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack by napredak
- **How much does it cost?** ₨1201 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/672364890-3-8-concrete-anchors-3-1-2-in-hammer-drive)

## Best For

- napredak enthusiasts

## Why This Product

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

## Key Features

- • **Unmatched Durability:** Crafted from premium carbon steel for industrial-grade strength and longevity.
- • **Bulk Pack Convenience:** 20-piece set guarantees you have enough anchors to complete multiple projects without interruption.
- • **Versatile Application:** Ideal for everything from heavy-duty industrial use to home repairs on concrete and cement surfaces.
- • **Secure Mechanical Grip:** Innovative center-pin expansion anchors firmly into concrete, delivering rock-solid fastening.
- • **Precision Fit Every Time:** Clearly labeled 3/8 x 3-1/2 inch size ensures perfect compatibility with your concrete projects.

## Overview

Napredak’s 3/8 x 3-1/2 inch hammer drive concrete anchors are engineered from carbon steel with a center-pin expansion mechanism, providing reliable, heavy-duty fastening for concrete and cement surfaces. This 20-pack set is perfect for professionals and DIYers seeking durable, precision-fit anchors for industrial, maintenance, or household projects.

## Description

Napredak 3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack | Carbon steel masonry anchors with center drive-pin expansion for concrete and cement fastening projects: desertcart.com: Industrial & Scientific

## Features

- CARBON STEEL CONSTRUCTION: Built with a carbon steel body and center pin, these concrete anchor bolts serve as carbon steel concrete fasteners for mounting hardware on concrete surfaces.
- CLEAR NOMINAL SIZE: Each concrete bolt is labeled 3/8 x 3-1/2 inches, making the selected size easy to verify before use in concrete or cement fastening projects.
- CENTER-PIN EXPANSION: The hammer drive pin anchor format expands the body inside concrete or cement, giving these expansion anchors a mechanical fastening point for the attached fixture.
- CONCRETE AND CEMENT USE: These cement anchors suit industrial concrete fastening, building maintenance, repair, and household projects on concrete or cement bases.
- 20-PIECE PACKAGE: The box contains 20 drive pin anchors in one matching nominal size, supplying a single-size set for projects that require multiple anchor points.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7M3XG97 |
| Best Sellers Rank | #173,366 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in Drive Anchors |
| Brand | Napredak |
| Color | Gold |
| Compatible Groove Diameter | 9.53 millimeters |
| Customer Reviews | 4.2 4.2 out of 5 stars (10) |
| Fastener Type | Hammer-In |
| Item Diameter | 9.53 millimeters |
| Item Dimensions | 5.7 x 1.73 x 5.51 inches |
| Item Highlight | Carbon steel masonry anchors with center drive-pin expansion for concrete and cement fastening projects |
| Item Shape | Cylindrical |
| Manufacturer | Napredak |
| Material Type | Carbon Steel |
| Number Of Items | 20 |
| Number of Pieces | 20 |
| Outside Diameter | 9.53 millimeters |
| Part Number | 3889 |
| Screw Head Style | Round |
| Set Name | 20-Piece Set |
| Size Name | 3/8"x3-1/2" |
| Thread Size | 3/8" |
| Unit Count | 20 Count |

## Product Details

- **Brand:** Napredak
- **Color:** Gold
- **Item dimensions L x W x H:** 5.7 x 1.73 x 5.51 inches
- **Material:** Carbon Steel
- **Size:** 3/8"x3-1/2"

## Images

![3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack - Image 1](https://m.media-amazon.com/images/I/31J6y7WCUCL.jpg)
![3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack - Image 2](https://m.media-amazon.com/images/I/41S7P9dkwpL.jpg)
![3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack - Image 3](https://m.media-amazon.com/images/I/41OS-q6gKbL.jpg)
![3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack - Image 4](https://m.media-amazon.com/images/I/51dDK2OUAzL.jpg)
![3/8 Concrete Anchors, 3-1/2 in Hammer Drive Anchors, 20 Pack - Image 5](https://m.media-amazon.com/images/I/51iQx3N8EKL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What materials is it made of?**
A: The Napredak Strike Anchor is made of carbon steel with a galvanized finish.

**Q: Can it be used on brick?**
A: No, it is specifically designed for solid concrete and cement only. The product description clearly states: Expansion bolts are suitable for sturdy substrates, such as solid concrete, and are not suitable for other masonry materials.

**Q: Does it require a special drill bit?**
A: Yes, the Napredak Strike Anchor requires a hard alloy (carbide) drill bit for proper installation. According to the instructions, you need to drill a 3/8-inch hole using an impact drill with hard alloy drill bits.

**Q: How many are included?**
A: The Napredak Strike Anchor comes in a pack of 20 pieces. Each anchor includes a screw anchor, flange nut, and nail for complete installation. This gives you enough fasteners for multiple projects or provides extras for future use.

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**Shop now:** [https://www.desertcart.sc/products/672364890-3-8-concrete-anchors-3-1-2-in-hammer-drive](https://www.desertcart.sc/products/672364890-3-8-concrete-anchors-3-1-2-in-hammer-drive)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-10-24*