MIT MAKES STUDY OF SELF-LOCKING THREAD

Many tests involving the Spiralock (Detroit Tap & Tool) thread form showed that such threads had the capability to increase a bolt's holding power to prevent loosening, but no one had been quite sure why this was so. A recent MIT study that throws some light on the subject is discussed here. Performed for a major automobile manufacturer, the study shows that a simple change in the female thread can improve locking, as compared with that achieved by the standard 60-deg screw thread. The Spiralock thread is a modified female form that mates with a standard male bolt or screw to produce a self-locking assembly.

• Corporate Authors:

  Morgan-Grampian, Incorporated

  16 West 61st Street
  New York, NY  United States  10023
• Authors:
  • Yeaple, F
• Publication Date: 1978-12

Media Info

• Pagination: p. 61-62
• Serial:
  • Product Engineering
  • Volume: 49
  • Issue Number: 12
  • Publisher: McGraw-Hill, Incorporated

Subject/Index Terms

• TRT Terms: Automobile industry; Bolts; Design; Fasteners; Fastenings; Fibers; Nuts (Fasteners)
• Uncontrolled Terms: Threads
• Old TRIS Terms: Automobile manufacture; Screw threads; Tightening
• Subject Areas: Design; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00195248
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Aug 28 1979 12:00AM