Watch for a draft screw thread/ fastener specification that will supercede the inactive Mil-S-8879C. The Fastener Improvement Team, recently renamed the Aerospace Industry Screw Thread Conformity Task Force to promote broader industry participation, expects to release the draft this month (O&M, December 2001). The group already has resolved several key issues, including provision for clearance between mating threads to prevent assembly issues for non-standard lengths.
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