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1 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. DET NORSKE VERITAS, 16340 PARK TEN PLACE, HOUSTON, TX 77084, TEL: 281-721-6600 - DET NORSKE VERITAS MANAGEMENT SYSTEM CERTIFICATE Certificate No. CERT-03698-2005-AQ-HOU-ANAB This is to certify that WITTEN COMPANY INC. at 8199 North 116th East Avenue, Owasso, OK 74055 USA has been found to conform to the Management System Standard: ISO 9001:2000 and EN/JISQ/AS9100:2004 and has been audited in accordance with the requirements of: AS9104A Det Norske Veritas Certification, Inc. is accredited under the Aerospace Registration Management Program.

2 This Certificate is valid for the following product or service ranges: The Design and Manufacture of Fastener Inserts for Composites Initial Certification date: March 08, 2002 Place and date: Houston, Texas, March 11, 2008 This Certificate is valid until: March 03, 2011 for the Accredited Unit: DET NORSKE VERITAS CERTIFICATION INC., HOUSTON TEXAS The audit has been performed under the supervision of Richard Gammenthaler Robert Keys Lead Auditor Management Representative CROSS REFERENCE LIST & STANDARDS Thursday, April 09, 2009 WITTEN STANDARDS/OTHERSHUR-LOK YOUNG ENGINEERS ALCOA/TRIDAIR 2235 17-1-6611 (NATICK) AK515 (AVIBANK) 2253 17-1-6655 (NATICK)

3 SL2251 TYE1400 400HE SERIES 2253 TYE3400 400SE SERIES 2338 TYE5117 2361 SL103 TYE103 2367 TYE2002 2395 TYE2161 2402 SL2334 TYE2334 D147HF SERIES 2402 TYE3006

4 400SF SERIES 2402 SL618 TYE2018 D137HF SERIES 2402 TYE3600 400HF SERIES 2444 SL6288 2445 SL101 TYE101 101 SERIES 2445 GAS501A SERIES SL102 TYE102 102 SERIES 2445 SL5182 TYE5182 2445 SL104 TYE104 104 SERIES 2445

5 SL106 TYE106 106 SERIES 2471 SL2748SL2899 TYE2048 2483 SL2868 TYE2068 2487 SL2808 2487 SL2668 2491 SL5107 TYE5107 2494 SL644 TYE2044 2497 SL6096 TYE2046 2498 SL6089 TYE2043

6 2506 SL6089 TYE2043 2507 SL2899 2517 SL10631 TYE2069 MS20392 MS35914 NAO241 NAO242 NAO243 NAO244 NAO245 NAS42 NAS42 SERIES NAS43 NAS43 SERIES NAS77 NAS77 SERIES NAS301 NAS301 SERIES NAS537 NAS537 SERIES NAS538 NAS538 SERIES NAS1056 NAS1056 SERIES NAS1057 NAS1057 SERIES NAS1835 NAS1835 SERIES SL606 TYE1835 D1835 SERIES NAS1836 2462 2535 NAS1836 SERIES SL607 TYE2001 D1836 SERIES NAS1832 2367 2532 NAS1832 SERIES SL601 TYE2002 D1832 SERIES NAS1833 NAS1833 SERIES SL602 TYE2007 D1833 SERIES NAS1834 NAS1834 SERIES SL603 TYE2003 D1834 SERIES NAS1834 NAS1834 SERIES SL604 TYE2004 D1834 SERIES 151 SERIES 17-1-4718 (NATICK) 141 SERIES 17-1-5540 (NATICK)17-1-6655 (NATICK) WITTEN COMPANY, INC.

7 SPECIALIZES IN STATE-OF-THE-ART CUSTOM DESIGNED FASTENERS SHORT LEAD TIME ON MANUFACTURED ITEMS ISO9001:2000, AS9100:2004, AND HubZone CERTIFIED MANUFACTURED IN THE USA TEL:(918)272-9567 FAX(918)272-9411 TYPICAL INSERT OR FASTENER APPLICATIONS Ground Support Equip. RPV s Galleys Prosthetics Aircraft Interiors Cargo Pallets Floor Panels All Composite StructuresPartitions Flight Simulators Ships Aerospace Military Shelters Bulkheads Railcars Satellite Receivers Recreation Equip.

8 Military Vehicles Fiberglass Products Race Cars Electronic Cabinetry Automobiles Snowmobiles Boats Flight Control Surface Helicopters UAV s Trucks FASTENER & INDUSTRIAL HARDWARE PRODUCTS Blind, Threaded Inserts Thru-Hole Inserts Flanged-Head Inserts Spacers Edge Panel Inserts Hardpoints Internal/ External Threads Knurled Bushings Two-piece Inserts Grommets Core Bushings NAS Equivalent Floating Inserts Quick Release Pin Press-In Insert Panel Thru-hole Press In Stud Receptacles Plug-Type Insert Sleeves CUSTOMIZED ENGINEERING Witten Company, Inc. is an engineering and manufacturing company specializing in fastening devices for composite structures.

9 Our expertise is in the area of research, development, and manufacturing of threaded and non-threaded fasteners for a variety of composite systems. Our engineering team has the ability and experience to provide our customers with specialized solutions to difficult problems even when our wide range of standard products do not fit the requirement. INSTALLATION DATA AVAILABLE UPON REQUEST QUICK DELIVERY For more information call or fax us your requirements. WITTEN COMPANY, INC. 918-272-9567 SKIN SNAP-INGROOVELCCLBSPIRALRIBSELF-LOCKOPTI ONALAPOTTING/VENT SLOTST (THREAD)TABLE IEXAMPLE: PART NUMBERING SYSTEM TABLE II151-M5-LK-12-SS-1 SERIES PREFIXTHREAD CODE NO.

10 (TABLE I)ADD "LK" FOR SELF LOCK (NYLON)ADD "L" FOR SELF-LOCK (METALLIC CRIMP)LENGTH DASH NO. (TABLE II)MATERIAL:A=ALUMINUM ALLOY (CHEM FILM FINISH)C=CARBON STEEL (CAD PLATE FINISH)Z=CARBON STEEL (ZINC PLATED)SS=STAINLESS STEEL (PLAIN FINISH)SP=STAINLESS STEEL (PASSIVATED)SKIN THICKNESS (TABLE III) PER NO. 4,941,785 & 5,082, OF SPIRAL RIBS VARY WITH LENGTHWITTEN COMPANY918-272-9567 REV:A 8/17/09151 SERIESSHEET 1 OF .010 BSELF-LOCK .06 CDIA .010 INSTALLATIONHOLE+.010 .03 LENGTHMINIMUM FULL THREAD DEPTHM 4M 5M 6M 8M 10M THICKNESSINSTALLATION - . - . - . - . - . - . - . - . - .099 METRIC 151 SERIES - "SPIRAL RIB"THREADED INSERT, BLIND, SNAP-IN HEAD STYLEHEAVY DUTY, "HIGH PERFORMANCE"BODY, INSERTEND CAP,ALUMINUM"A"" T " THREADFLOATING NUT1/32 RADIALMOVEMENTSHEET 1 OF 2 TABLE +.