---
product_id: 55810249
title: "Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI"
brand: "pem"
price: "€ 40.52"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/55810249-pem-floating-self-clinching-fasteners-type-a4-as-ac-unified
store_origin: IE
region: Ireland
---

# Thread Size #4-40 precision Self-clinching for effortless assembly Steel alloy strength & durability Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI

**Brand:** pem
**Price:** € 40.52
**Availability:** ❌ Out of Stock

## Summary

> 🔩 Lock in strength, unlock your build’s potential!

## Quick Answers

- **What is this?** Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI by pem
- **How much does it cost?** € 40.52 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/55810249-pem-floating-self-clinching-fasteners-type-a4-as-ac-unified)

## Best For

- pem enthusiasts

## Why This Product

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

## Key Features

- • **Robust Steel Alloy Construction:** Crafted from high-strength steel and stainless steel for lasting durability under load.
- • **Certified Aerospace-Grade Quality:** Meets NASM and Military specs, trusted for critical, high-performance applications.
- • **Floating Nut Design for Flexibility:** Allows up to .030” hole misalignment adjustment, reducing installation errors.
- • **Precision Threading for Perfect Fit:** Unified #4-40 thread size ensures seamless compatibility with standard hardware.
- • **Effortless Self-Clinching Installation:** Press-in design locks fasteners flush for quick, reliable assembly without extra tools.

## Overview

The PEM Floating Self-Clinching Fasteners (Type A4/AS/AC - AS-440-2ZI) deliver precision #4-40 unified threads embedded in high-strength steel alloy. Designed for thin stainless steel sheets, these fasteners self-clinch flush with the surface, enabling quick, secure assembly with up to .030” tolerance for hole misalignment. Certified to aerospace and military standards, they offer unmatched durability and load-bearing performance for professional-grade hardware applications.

## Description

Locking and Non-locking Threads These fasteners provide load-bearing threads in thin sheets and permit up to .030” adjustment for mating hole misalignment. The self-clinching feature offers fast and simple assembly. The fasteners are squeezed into prepared holes using any standard press. The sheet remains flush on one side, and the fastener is permanently locked in place. Extra strength and support in assembly is obtained by the threads of the floating nut extending fully into the retainer shank (a unique PEM feature). A self-locking version of the fastener is also offered. Thread locking torque performance is equivalent to applicable NASM25027 specifications. Non-locking Type A4 and self-locking Type LA4 fasteners provide load-bearing threads in stainless steel sheets as thin as .038” with hardness up to HRB 88 on the Rockwell “B” scale. Many PEM Type AS and AC self-clinching floating fasteners correspond to sizes in US NASM45938/11 specifications. Check our web site for a complete Military Specification and National Aerospace Standards Reference Guide (Bulletin NASM).

## Features

- Thread Size: .112-40 (#4-40)
- Thread Type: Non-Locking
- Thread Code: 440
- Fastener Material: Steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B072BH65MG |
| Batteries Included? | No |
| Batteries Required? | No |
| Brand | PEM |
| Certification | As, Nasm |
| Date First Available | May 3, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 50 |
| Manufacturer | Penn |
| Material | Alloy Steel |
| Measurement System | Inch |
| Metal Type | Alloy Steel, Stainless Steel |
| Part Number | AS-440-2ZI |
| Thread Size | #4-40 |
| Thread Type | Unified National |

## Product Details

- **Brand:** PEM
- **Material:** Alloy Steel
- **Metal Type:** Alloy Steel, Stainless Steel
- **Thread Size:** #4-40
- **Thread Type:** Unified National

## Images

![Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI - Image 1](https://m.media-amazon.com/images/I/212qdWSQvJL.jpg)
![Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI - Image 2](https://m.media-amazon.com/images/I/413kD4OlXrL.jpg)
![Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI - Image 3](https://m.media-amazon.com/images/I/31WKqXzjZYL.jpg)
![Pem Floating Self-Clinching Fasteners - Type A4/AS/AC - Unified, AS-440-2ZI - Image 4](https://m.media-amazon.com/images/I/51vgTmBmeoL.jpg)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-04*