ca. 1950
GUSN-244666
Slotted and knurled screw for use with Singer buttonholer attachment. The screw is used to affix this attachment to the machine presser bar. The buttonholer manual (2010.17.2.6) lists this screw as Part no. 140530.
clamping screws
steel (alloy)
Screw
66.2
Probably The Singer Manufacturing Co. (Manufacturer)
2010.17.2.5
United States
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