National Aerospace Fasteners (TPE:3004) E10: NT$4.34 (As of Dec. 2025)

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TPE:3004 National Aerospace Fasteners Corp TPE:3004
84 GF Score
Price NT$153.50
GF Value NT$142.92
Valuation Fairly Valued
! 9 Warning Signs
View Full Analysis

What is National Aerospace Fasteners E10?

National Aerospace Fasteners TPE:3004 -0.65% 84 E10 is NT$4.34 as of Dec. 2025. GuruFocus rates TPE:3004 with a GF Score™ of 84/100 and a GF Value™ of NT$142.92 (Fairly Valued). The stock has 9 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

National Aerospace Fasteners's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$1.525. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$4.34 for the trailing ten years ended in Dec. 2025.

During the past 12 months, National Aerospace Fasteners's average E10 Growth Rate was 2.10% per year. During the past 3 years, the average E10 Growth Rate was 13.50% per year. During the past 5 years, the average E10 Growth Rate was 7.40% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of National Aerospace Fasteners was 13.50% per year. The lowest was -5.20% per year. And the median was 6.15% per year.

As of today (2026-07-15), National Aerospace Fasteners's current stock price is NT$153.50. National Aerospace Fasteners's E10 for the quarter that ended in Dec. 2025 was NT$4.34. National Aerospace Fasteners's Shiller PE Ratio of today is 35.37.

During the past 13 years, the highest Shiller PE Ratio of National Aerospace Fasteners was 37.09. The lowest was 12.65. And the median was 23.11.


National Aerospace Fasteners  (TPE:3004) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

National Aerospace Fasteners's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=153.50/4.34
=35.37

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Shiller P/E Ratio of National Aerospace Fasteners was 37.09. The lowest was 12.65. And the median was 23.11.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


National Aerospace Fasteners E10 Related Terms


National Aerospace Fasteners E10 Historical Data

* Premium members only.

The historical data trend for National Aerospace Fasteners's E10 can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

National Aerospace Fasteners E10 Chart

National Aerospace Fasteners Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.00 2.97 3.31 4.25 4.34

National Aerospace Fasteners Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
E10 Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 4.25 4.39 4.41 4.39 4.34

TPE:3004 vs SNA, RBC, LECO: E10 Comparison

For the Tools & Accessories subindustry, National Aerospace Fasteners's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


National Aerospace Fasteners Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, National Aerospace Fasteners's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where National Aerospace Fasteners's Shiller PE Ratio falls into.


TPE:3004
84GF Score
National Aerospace Fasteners Corp TPE:3004
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

National Aerospace Fasteners E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, National Aerospace Fasteners's adjusted earnings per share data for the three months ended in Dec. 2025 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=1.525/324.0540*324.0540
=1.525

Current CPI (Dec. 2025) = 324.0540.

National Aerospace Fasteners Quarterly Data

per share eps CPI Adj_EPS
201603 1.029 238.132 1.400
201606 1.059 241.018 1.424
201609 0.873 241.428 1.172
201612 1.157 241.432 1.553
201703 0.588 243.801 0.782
201706 0.784 244.955 1.037
201709 1.088 246.819 1.428
201712 -1.372 246.524 -1.803
201803 1.088 249.554 1.413
201806 1.353 251.989 1.740
201809 1.451 252.439 1.863
201812 1.696 251.233 2.188
201903 1.421 254.202 1.811
201906 1.716 256.143 2.171
201909 1.902 256.759 2.401
201912 1.490 256.974 1.879
202003 1.372 258.115 1.722
202006 0.265 257.797 0.333
202009 -0.216 260.280 -0.269
202012 -0.304 260.474 -0.378
202103 -0.461 264.877 -0.564
202106 -0.823 271.696 -0.982
202109 -0.608 274.310 -0.718
202112 0.088 278.802 0.102
202203 -0.431 287.504 -0.486
202206 0.922 296.311 1.008
202209 1.020 296.808 1.114
202212 1.284 296.797 1.402
202303 1.235 301.836 1.326
202306 1.049 305.109 1.114
202309 1.549 307.789 1.631
202312 1.735 306.746 1.833
202403 1.843 312.332 1.912
202406 1.657 314.175 1.709
202409 1.255 315.301 1.290
202412 2.005 315.605 2.059
202503 1.931 319.799 1.957
202506 1.118 322.561 1.123
202509 1.216 324.800 1.213
202512 1.525 324.054 1.525

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of NT$4.34 mean?
National Aerospace Fasteners (TPE:3004) has a E10 of NT$4.34 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on National Aerospace Fasteners and its competitors.
Is National Aerospace Fasteners' E10 too high?
National Aerospace Fasteners' current E10 is NT$4.34. Overall, National Aerospace Fasteners has a GF Score™ of 84/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does National Aerospace Fasteners' E10 compare to SNA and RBC?
National Aerospace Fasteners' E10 of NT$4.34 can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Industrial Products company?
A good E10 depends on the Industrial Products industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on National Aerospace Fasteners and its competitors. National Aerospace Fasteners's current E10 is NT$4.34. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Aerospace Fasteners stock overvalued right now?
Based on GuruFocus' analysis, National Aerospace Fasteners (TPE:3004) is currently considered Fairly Valued. The stock's GF Value™ is NT$142.92, compared to a current price of NT$153.50 — trading 7.4% above its estimated fair value. The current E10 is NT$4.34. National Aerospace Fasteners' overall GF Score™ is 84/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For National Aerospace Fasteners (TPE:3004), the current E10 is NT$4.34 as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is National Aerospace Fasteners (TPE:3004) Overvalued in 2026?

Based on GuruFocus' analysis, National Aerospace Fasteners stock appears to be overvalued. The current stock price of NT$153.50 is trading 7.4% above its estimated GF Value™ of NT$142.92. GuruFocus considers National Aerospace Fasteners to be Fairly Valued.

Key valuation signals for TPE:3004:

  • E10: NT$4.34
  • GF Value™: NT$142.92 vs. price of NT$153.50 (7.4% above fair value)
  • GF Score™: 84/100 with 9 warning signs

No single metric tells the full story. See the TPE:3004 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


National Aerospace Fasteners Business Description

Address No. 1, Taiping East Road, Pingzhen District, Taoyuan, TWN, 324026
National Aerospace Fasteners Corp engages in the manufacture, processing, agency, trading of various types of fasteners and construction parts and related components of aircraft and automobiles. Aerospace and Industrial products are reportable segments of the company. Majority of the its revenue is being generated from Aerospace segment.
84GF Score

Get the complete analysis for TPE:3004

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$153.50
Price
NT$142.92
GF Value