SCHEDULE 13G 

Amendment No. 2 
CompX International Incorporated 
Class A common stock  
Cusip # 20563P101 

Cusip # 20563P101 
Item 1:Reporting Person - FMR Corp. 
Item 4:Commonwealth of Massachusetts 
Item 5:208,400 
Item 6:0 
Item 7:794,766 
Item 8:0 
Item 9:860,766 
Item 11:14.003% 
Item 12:    HC 

Cusip # 20563P101 
Item 1:Reporting Person - Edward C. Johnson 3d  
Item 4:United States of America 
Item 5:0 
Item 6:0 
Item 7:860,766 
Item 8:0 
Item 9:860,766 
Item 11:14.003% 
Item 12:IN 

Cusip # 20563P101 
Item 1:Reporting Person - Abigail P. Johnson  
Item 4:United States of America 
Item 5:0 
Item 6:0 
Item 7:860,766 
Item 8:0 
Item 9:860,766 
Item 11:14.003% 
Item 12:IN 

SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS 
FILED PURSUANT TO RULE 13d-1(c) 

Item 1(a).Name of Issuer: 

CompX International Incorporated 

Item 1(b).Name of Issuer's Principal Executive Offices: 

200 Old Mill Road, 
Mauldin, SC 29662 

Item 2(a).Name of Person Filing:  

FMR Corp. 

Item 2(b).Address or Principal Business Office or, if None,  
Residence: 

82 Devonshire Street, Boston, Massachusetts  02109 

Item 2(c).Citizenship: 

Not applicable 

Item 2(d).Title of Class of Securities: 

Class A common stock  

Item 2(e).CUSIP Number:   

20563P101 

Item 3.This statement is filed pursuant to Rule 13d-1(c). 

Not applicable 

Item 4.Ownership 

(a)Amount Beneficially Owned: 
860,766 

(b)Percent of Class: 
14.003% 

(c)Number of shares as to which such person has:   

(i)sole power to vote or to direct the vote: 
208,400 

(ii)shared power to vote or to direct the vote: 
0 

(iii)sole power to dispose or to direct the  
disposition of:794,766 

(iv)shared power to dispose or to direct the  
disposition of:0 

Item 5.Ownership of Five Percent or Less of a Common Stock. 

Not applicable. 

Item 6.Ownership of More than Five Percent on Behalf of Another  
Person. 

Various persons have the right to receive or the  
power to direct the receipt of dividends from, or  
the proceeds from the sale of, the Class A common  
stock of CompX International Incorporated.  No one  
person's interest in the Class A common stock of  
CompX International Incorporated is more than five  
percent of the total outstanding Class A common  
stock. 

Item 7.Identification and Classification of the Subsidiary Which  
Acquired the Security Being Reported on By the Parent  
Holding Company. 

See attached Exhibit(s) A, B, and C.  

Item 8.Identification and Classification of Members of the  
Group. 

Not Applicable. See attached Exhibit A.  

Item 9.Notice of Dissolution of Group. 

Not applicable. 

Item 10.Certification. 

By signing below I certify that, to the best of my  
knowledge and belief, the securities referred to  
above were not acquired and are not held for the  
purpose of or with the effect of changing or  
influencing the control of the issuer of the  
securities and were not acquired and are not held in  
connection with or as a participant in any  
transaction having that purpose or effect. 

Signature 

After reasonable inquiry and to the best of my  
knowledge and belief, I certify that the information  
set forth in this Schedule 13G in connection with  
FMR Corp.'s beneficial ownership of the Class A  
common stock of CompX International Incorporated at  
November 4, 1999 is true, complete and correct.  

November 11, 1999  
Date 

Signature 

Eric D. Roiter 
Duly authorized under  
Power of Attorney 
dated December 30, 1997,  
by and on behalf 
of FMR Corp. and its  
direct and indirect 
subsidiaries. 

SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS 
FILED PURSUANT TO RULE 13d-1(c) 

Pursuant to the instructions in Item 7 of Schedule 13G,  
Fidelity Management & Research Company ("Fidelity"), 82  
Devonshire Street, Boston, Massachusetts 02109, a wholly-owned  
subsidiary of FMR Corp. and an investment adviser registered  
under Section 203 of the Investment Advisers Act of 1940, is the  
beneficial owner of 586,366 shares or 9.539% of the Class A  
common stock outstanding of CompX International Incorporated  
("the Company") as a result of acting as investment adviser to  
various investment companies (the "funds") registered under  
Section 8 of the Investment Company Act of 1940. 

Edward C. Johnson 3d, FMR Corp., through its control of  
Fidelity, and the funds collectively each has sole power to  
dispose of the 586,366 shares owned by the Funds. 

Neither FMR Corp. nor Edward C. Johnson 3d, Chairman of FMR  
Corp., has the sole power to vote or direct the voting of the  
shares owned directly by the funds, which power resides with the  
funds' Boards of Trustees.  Fidelity carries out the voting of  
the shares under written guidelines established by the funds'  
Boards of Trustees. 

Fidelity Management Trust Company, 82 Devonshire Street,  
Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR  
Corp. and a bank as defined in Section 3(a)(6) of the Securities  
Exchange Act of 1934, is the beneficial owner of 208,400 shares  
or 3.390% of the Class A common stock outstanding of the Company  
as a result of its serving as investment manager of the  
institutional account(s).  

Edward C. Johnson 3d and FMR Corp., through its control of  
Fidelity Management Trust Company, each has sole dispositive  
power over 208,400 shares and sole power to vote or to direct the  
voting of 208,400 shares. 

Strategic Advisers, Inc., 82 Devonshire Street, Boston, MA  
02109, a wholly-owned subsidiary of FMR Corp. and an investment  
adviser registered under Section 203 of the Investment Advisers  
Act of 1940, provides investment advisory services to  
individuals. It does not have sole power to vote or direct the  
voting of shares of certain securities held for clients and has  
sole dispositive power over such securities. As such, FMR Corp.'s  
beneficial ownership may include shares beneficially owned  
through Strategic Advisers, Inc. 

Members of the Edward C. Johnson 3d family are the  
predominant owners of Class B shares of common stock of FMR  
Corp., representing approximately 49% of the voting power of FMR  
Corp.  Mr. Johnson 3d owns 12.0% and Abigail Johnson owns 24.5%  
of the aggregate outstanding voting stock of FMR Corp.  Mr.  
Johnson 3d is Chairman of FMR Corp. and Abigail P. Johnson is a  
Director of FMR Corp.  The Johnson family group and all other  
Class B shareholders have entered into a shareholders' voting  
agreement under which all Class B shares will be voted in  
accordance with the majority vote of Class B shares.   
Accordingly, through their ownership of voting common stock and  
the execution of the shareholders' voting agreement, members of  
the Johnson family may be deemed, under the Investment Company  
Act of 1940, to form a controlling group with respect to FMR  
Corp. 

Fidelity International Limited, Pembroke Hall, 42 Crowlane,  
Hamilton, Bermuda, and various foreign-based subsidiaries provide  
investment advisory and management services to a number of non- 
U.S. investment companies and certain institutional investors.   
Fidelity International Limited is the beneficial owner of 66,000  
shares or 1.073% of the Class A common stock outstanding of the  
Company. Additional information with respect to the beneficial  
ownership of Fidelity International Limited is shown on Exhibit  
B. 

FMR Corp. and Fidelity International Limited are of the view  
that they are not acting as a "group" for purposes of Section  
13(d) under the Securities Exchange Act of 1934 (the "1934 Act")  
and that they are not otherwise required to attribute to each  
other the "beneficial ownership" of securities "beneficially  
owned" by the other corporation within the meaning of Rule 13d-3  
promulgated under the 1934 Act.  Therefore, they are of the view  
that the shares held by the other corporation need not be  
aggregated for purposes of Section 13(d).  However, FMR Corp. is  
making this filing on a voluntary basis as if all of the shares  
are beneficially owned by FMR Corp. and Fidelity International  
Limited on a joint basis. 

EXHIBIT to SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS 
FILED PURSUANT TO RULE 13d-1(c) 

Pursuant to instructions in Item 7 of Schedule 13G, this  
Exhibit has been prepared to identify Fidelity International  
Limited, Pembroke Hall, 42 Crow Lane, Hamilton, Bermuda, a  
Bermudan joint stock company incorporated for an unlimited  
duration by private act of the Bermuda Legislature (FIL) and an  
investment adviser to various investment companies (the  
"International Funds") and certain institutional investors, as a  
beneficial owner of the 66,000 shares or 1.073% of the Class A  
common stock outstanding of CompX International Incorporated. 

Prior to June 30, 1980, FIL was a majority-owned subsidiary  
of Fidelity Management & Research Company (Fidelity), a wholly- 
owned subsidiary of FMR Corp.  On that date, the shares of FIL  
held by Fidelity were distributed, as a dividend,  to the  
shareholders of FMR Corp.  FIL currently operates as an entity  
independent of FMR Corp. and Fidelity.  The International Funds  
and FIL's other clients, with the exception of Fidelity and an  
affiliated company of Fidelity, are non-U.S. entities. 

A partnership controlled by Edward C. Johnson 3d and members  
of his family owns shares of FIL voting stock with the right to  
cast approximately 39.89% of the total votes which may be cast by  
all holders of FIL voting stock.  Mr. Johnson 3d is Chairman of  
FMR Corp. and FIL.  FMR Corp. and FIL are separate and  
independent corporate entities, and their Boards of Directors are  
generally composed of different individuals.  Other than when one  
serves as a sub adviser to the other, their investment decisions  
are made independently, and their clients are generally different  
organizations. 

FMR Corp. and Fidelity International Limited are of the view  
that they are not acting as a "group" for purposes of Section  
13(d) under the Securities Exchange Act of 1934 (the "1934 Act")  
and that they are not otherwise required to attribute to each  
other the "beneficial ownership" of securities "beneficially  
owned" by the other corporation within the meaning of Rule 13d-3  
promulgated under the 1934 Act.  Therefore, they are of the view  
that the shares held by the other corporation need not be  
aggregated for purposes of Section 13(d).  However, FMR Corp. is  
making this filing on a voluntary basis as if all of the shares  
are beneficially owned by FMR Corp. and Fidelity International  
Limited on a joint basis. 

FIL has sole dispositive power over 66,000 shares owned by  
the International Funds. FIL has sole power to vote or direct the  
voting of 66,000 shares of Class A common stock held by the  
International Funds as reported above. 

SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS 
FILED PURSUANT TO RULE 13d-1(c) 
RULE 13d-1(f)(1)  AGREEMENT 

The undersigned persons, on November 11, 1999, agree and  
consent to the joint filing on their behalf of this Schedule 13G  
in connection with their beneficial ownership of the Class A  
common stock of CompX International Incorporated at November 4,  
1999. 

FMR Corp. 

By   /s/Eric D. Roiter    
Eric D. Roiter 
Duly authorized under Power of  
Attorney 
dated December 30, 1997, by and on  
behalf 
of FMR Corp. and its direct and  
indirect  
subsidiaries. 

Edward C. Johnson 3d 

By   /s/Eric D. Roiter    
Eric D. Roiter 
Duly authorized under Power of  
Attorney 
dated December 30, 1997, by and on  
behalf 
of Edward C. Johnson 3d. 

Abigail P. Johnson 

By   /s/Eric D. Roiter    
Eric D. Roiter 
Duly authorized under Power of  
Attorney 
dated December 30, 1997, by and on  
behalf 
of Abigail P. Johnson. 

Fidelity Management & Research  
Company 

By   /s/Eric D. Roiter    
Eric D. Roiter 
Senior V.P. and General Counsel 

Fidelity International Limited 

By   /s/Eric D. Roiter    
Eric D. Roiter 
Duly authorized under Power of  
Attorney 
dated December 30, 1997, by and on  
behalf 
of Fidelity International Limited  
and its direct  
and indirect subsidiaries.