FIELD: instrument making.
SUBSTANCE: invention relates to fasteners. The proposed fastener comprises the head and body. The said body consists of several cylindrical sections, with equal and/or unequal length and unequal diametre. The diametre of every subsequent section of proposed fastener gets smaller by proportionality factor Kp = 1.618. The fastener head can vary in compliance with current standards.
EFFECT: higher reliability.
8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
RU2336439C1 |
