NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

52 -- ROCKETDYNE RETRACTABLE PIN-TOOL SUPPORT SOL 8-1-9-EH-C2801 DUE 061199 POC Gloria J. Coffey, Contract Specialist, Phone (256) 544-9187, Fax (256) 544-8688, Email gloria.coffey@msfc.nasa.gov -- David. G. Morgan, Contracting Officer, Phone (256) 544-0410, Fax (256) 544-8688, Email david.morgan@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/MSFC/date.html#8-1-9-EH-C2801. E-MAIL: Gloria J. Coffey, gloria.coffey@msfc.nasa.gov. The purpose of this amendment is to provide clarifications and answers to questions which were asked during the Friction Stir Welding (FSW) Facility Walk-Through on Wednesday, May 26, 1999. QUESTION 1: Statement of Work calls for Phase II and Phase IIa. Which is which? ANSWER 1: Phase II is the Vertical. Phase IIa refers to an identical retractable pin tool made for the K&T Mill. The interface on spindle has a shorter nose. QUESTION 2: What is the material? ANSWER 2: The material is mainly stainless. The drawings further specify the materials. QUESTION 3: Are we planning to join any materials other than aluminum? ANSWER 3: Yes -- Weld copper to aluminum; MMC Composites to Aluminum; also weld steel and nickel-base alloys. QUESTION 4: Is there a preference on the load for sensor control? ANSWER 4: We should be able to handle loads to 15,000 lbs., +/- 150 lbs. QUESTION 5: What modifications would have to be made concerning machining, bolt hole pattern? ANSWER 5: Please see drawings for details. QUESTION 6: Will NASA support the integration of sensor to existing hardware/software? ANSWER 6: The Government will take care of the power supply, interface card, display, and software development which is designed to table readings. During the Site Visit, a request was made as to obtaining a sketch of the K&T Mill, showing all required dimensions. Such a drawing is available upon request. For information purposes, however, the K&T Mill is a 5-axis Boring Hole Mill, CNC Model 250. The fixture is to be attached to the B Axis, which rotates 360 degrees and is attached with 4 bolts. Each offeror shall include in its proposal their own method of meeting this requirement. CONTRACTORS BIDDING ON THIS REQUIREMENT ARE REMINDED THAT THEY MUST SUBMIT A QUALIFICATIONS STATEMENT ALONG WITH THEIR PROPOSAL. As a result of this amendment, the closing date for this solicitation is extended to Close Of Business June 11, 1999. Posted 06/01/99 (D-SN337740). (0152)

Loren Data Corp. http://www.ld.com (SYN# 0251 19990603\52-0001.SOL)