Exhibit 3.5.20

Delaware	PAGE 1
The First State

I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED ARE TRUE AND CORRECT COPIES OF ALL DOCUMENTS ON FILE OF “GREDE MACHINING LLC” AS RECEIVED AND FILED IN THIS OFFICE.

THE FOLLOWING DOCUMENTS HAVE BEEN CERTIFIED:

CERTIFICATE OF FORMATION, FILED THE THIRD DAY OF NOVEMBER, A.D. 2010, AT 4:43 O’CLOCK P.M.

AND I DO HEREBY FURTHER CERTIFY THAT THE AFORESAID CERTIFICATES ARE THE ONLY CERTIFICATES ON RECORD OF THE AFORESAID LIMITED LIABILITY COMPANY, “GREDE MACHINING LLC”.

		[SEAL]	/s/    Jeffrey W. Bullock
			Jeffrey W. Bullock, Secretary of State
	4893414    8100H		AUTHENTICATION:	1768275
	141277175		DATE:	10-09-14
You may verify this certificate online at corp.delaware.gov/authver.shtml

State of Delaware

Secretary of State

Division of Corporations

Delivered 04:55 PM 11/03/2010

FILED 04:43 PM 11/03/2010

SRV 101054795 - 4893414 FILE

STATE of DELAWARE

LIMITED LIABILITY COMPANY

CERTIFICATE of FORMATION

• First: The name of the limited liability company is Grede Machining LLC.

• Second: The address of its registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle. The name of its Registered agent at such address is The Corporation Trust Company.

In Witness Whereof, the undersigned has executed this Certificate of Formation this 29^th day of October, 2010.

By:	/s/ Douglas J. Grimm
Name:	Douglas J. Grimm
Title:	President

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