UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) Under the Securities Exchange Act of 1934 CHICAGO RIVET & MACHINE Co. ------------------------------ (Name of Issuer) Common Stock, par value $1.00 per share ------------------------------ (Title of Class of Securities) 168088102 -------------- (CUSIP Number) YunBok Na SEOUL METAL HOLDINGS Co., LTD. #27, Wondang-daero, 246Beon-gil Seo-gu, Incheon, Republic of Korea +82-31-932-9970 -------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) February 23, 2017 ------------------------------------------------------- (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [ ]. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent. (Continued on following pages) (Page 1 of 7 Pages) (1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). --------------------- ----------------- CUSIP NO. 168088102 13D Page 2 of 7 Pages --------------------- ----------------- 1 NAMES OF REPORTING PERSON SEOUL METAL HOLDINGS Co., LTD. -------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] -------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO -------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] -------------------------------------------------------------------------- 6 CITZENSHIP OR PLACE OF ORGANIZATION Republic of Korea -------------------------------------------------------------------------- 7 SOLE VOTING POWER 13,784 NUMBER OF --------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY 45,512 OWNED BY --------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 13,784 PERSON --------------------------------------------------------- WITH 10 SHARED DISPOSITIVE POWER 45,512 --------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 59,296 -------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.2%(*) -------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* HC -------------------------------------------------------------------------- *The percentage of the class of securities are calculated based on 1,138,096 Common Stocks outstanding as of February 23, 2017. --------------------- ----------------- CUSIP NO. 168088102 13D Page 3 of 7 Pages --------------------- ----------------- 1 NAMES OF REPORTING PERSON Global SM Tech Limited -------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] -------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO -------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] -------------------------------------------------------------------------- 6 CITZENSHIP OR PLACE OF ORGANIZATION Cayman Islands -------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF --------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY 45,512 OWNED BY --------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 0 PERSON --------------------------------------------------------- WITH 10 SHARED DISPOSITIVE POWER 45,512 --------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 45,512 -------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.0%(*) -------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* HC -------------------------------------------------------------------------- --------------------- ----------------- CUSIP NO. 168088102 13D Page 4 of 7 Pages --------------------- ----------------- 1 NAMES OF REPORTING PERSON Industrias Gol, S.A. -------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] -------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO -------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] -------------------------------------------------------------------------- 6 CITZENSHIP OR PLACE OF ORGANIZATION Kingdom of Spain -------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF --------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY 45,512 OWNED BY --------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 0 PERSON --------------------------------------------------------- WITH 10 SHARED DISPOSITIVE POWER 45,512 --------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 45,512 -------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.0%(*) -------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* CO -------------------------------------------------------------------------- --------------------- ----------------- CUSIP NO. 168088102 13D Page 5 of 7 Pages --------------------- ----------------- Item 1. Security and Issuer This statement on Schedule 13D (this "Schedule 13D") relates to Common Stock, par value $1.00 per share ("Common Stock"), of CHICAGO RIVET & MACHINE Co. (the "Issuer").The principal executive offices of CHICAGO RIVET & MACHINE Co. are located at 901 Frontenac Road, Naperville, Illinois 60563. Item 2. Identity and Background (a)-(c), (f): This Schedule 13D is being filed jointly on behalf of the following reporting persons (collectively the "Reporting Persons"): (i) SEOUL METAL HOLDINGS CO., LTD. ("SMH"), (ii) Global SM Tech Limited ("GSMT"), and (iii) Industrias Gol, S.A. ("Industrias Gol"). The Reporting Persons are in the industry of manufacturing fasteners for electronic and automobile parts. The address of each of the Reporting Persons is #27, Wondang-daero, 246Beon-gil, Seo-gu, Incheon, Republic of Korea (SMH) ,Scotia Centre 4th Floor, P.O. Box 2804, George Town, Grand Cayman KY1-1112, Cayman Islands (GSMT), Sagar-Erreka, 19 20590 Soraluze Gipuzkoa, Spain (industrias Gol). Citizenship of each of the Reporting Persons is Republic of Korea (SMH), Cayman Islands (GSMT), and Kingdom of Spain (Industrias Gol). (d)-(e): None of the Reporting Persons has, during the five years prior to the date hereof, (i) been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Item 3. Source and Amount of Funds or Other Consideration The transactions required to be reported in this Statement are as follows: 1.SMH acquired 13,784 shares of Common Stock of the Issuer which were purchased in transactions on the open market during the period from February 2, 2017 to February 23, 2017 for an aggregate consideration of $612,391.25 (Gross Amount + Fee). 2.Industrias Gol acquired 45,512 shares of Common Stock of the Issuer which were purchased in transactions on the open market during the period from December 1, 2016 to January 20, 2017 for an aggregate consideration of $1,927,693.36(Gross Amount + Fee). No part of the purchase price of the above transactions was represented by funds or other consideration borrowed. Item 4. Purpose of Transaction The Reporting persons acquired the securities reported herein for business management participation. The Reporting Persons do not have any present plans or proposal that would relate to or result in any of the transactions described insubparagraphs (a) through (j) of Item 4 of Schedule 13D. Item 5. Interest in Securities of the Issuer (a): Industrias Gol is a direct/indirect 90% owned subsidiary of GSMT which in turn is a direct 57.4% owned subsidiary of SMH. This statement on Schedule 13D is also being filed on behalf of GSMT and Industrias Gol, which may be deemed to beneficially own (as that term is defined in Rule 13D-3) the Shares of Common Stock of the Issuer held by SMH. SMH beneficially owns the following aggregate number of Shares of Common Stock of the Issuer. The percentages of the class of securities set forth below are based on 1,138,096 shares of the Issuer's Common Stock outstanding as of February 23, 2017. The aggregate number of the class of securities beneficially owned by SMH is 59,296 shares and the percentage of the class of securities beneficially owned by the Reporting Persons is approximately 5.21%. (b): STOCK SOLE VOTING AND SHARED VOTING AND HOLDER DISPOSITIVE POWER DISPOSITIVE POWER ----------- --------------------------------- ---------------------------- SMH 13,784 45,512 --------------------- ----------------- CUSIP NO. 168088102 13D Page 6 of 7 Pages --------------------- ----------------- (c): DATE REPORTING QUANTITY GROSS AVERAGE (DD/MM/YY) PERSON AMOUNT(USD) PRICE(USD) ---------- ---------------- -------- ------------ --------- 01/12/2016 Industrias Gol 115 3,910.00 34.00 05/12/2016 Industrias Gol 100 3,451.00 34.51 14/12/2016 Industrias Gol 1,300 48,730.00 37.48 15/12/2016 Industrias Gol 300 11,354.97 37.85 19/12/2016 Industrias Gol 12 460.56 38.38 21/12/2016 Industrias Gol 101 3,876.38 38.38 22/12/2016 Industrias Gol 10 383.80 38.38 28/12/2016 Industrias Gol 10,000 388,899.28 38.89 04/01/2017 Industrias Gol 100 4,200.00 42.00 05/01/2017 Industrias Gol 1,000 44,249.90 44.25 06/01/2017 Industrias Gol 1,400 59,663.86 42.62 09/01/2017 Industrias Gol 15,400 671,394.63 43.60 10/01/2017 Industrias Gol 5,104 224,418.54 43.97 17/01/2017 Industrias Gol 6,487 282,117.30 43.49 20/01/2017 Industrias Gol 4,083 178,068.31 43.61 02/02/2017 SMH 600 26709.00 44.52 02/02/2017 SMH 100 4455.00 44.55 02/02/2017 SMH 1,000 44852.60 44.85 02/02/2017 SMH 300 13470.00 44.90 02/02/2017 SMH 800 36694.00 45.87 02/02/2017 SMH 700 32200.00 46.00 02/02/2017 SMH 600 27900.96 46.50 02/02/2017 SMH 200 9376.00 46.88 02/02/2017 SMH 100 4690.00 46.90 03/02/2017 SMH 500 23500.00 47.00 03/02/2017 SMH 155 7285.00 47.00 03/02/2017 SMH 1,200 57600.00 48.00 03/02/2017 SMH 1,000 48748.00 48.75 03/02/2017 SMH 1,000 48750.00 48.75 03/02/2017 SMH 500 24375.00 48.75 22/02/2017 SMH 2,029 85152.46 41.97 23/02/2017 SMH 1,000 38514.00 38.51 23/02/2017 SMH 1,000 39000.00 39.00 23/02/2017 SMH 1,000 39119.00 39.12 ------- TOTAL: 59,296 (d)-(e): not applicable. Item 6 Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer None Item 7 Material to be Filed as Exhibits None SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: March 7. 2017 SEOUL METAL HOLDINGS CO., LTD. By: /s/ YUNBOK NA Name: YunBok Na Title: Chief Executive Officer Global SM Tech Limited By: /s/ YUNBOK NA Name: YunBok Na Title: Chief Executive Officer Industrias Gol, S.A. By: /s/ YUNBOK NA Name: YunBok Na Title: Chief Executive Officer ATTENTION: INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001)