A cold forged socket screw – the company signature product – repurposed as an advertising thermometer / paperweight. Parker-Kalon (P-K) was a pioneering American fastener company, founded in 1913, famous for developing the first self-threading screw for metal, revolutionizing fastening by eliminating the need for pre-tapped holes. Later, the company produced cold-forged socket screws – like the one being sold – used in iconic applications like the Spirit of St. Louis and WWII aircraft. The company later became part of Stanley Black & Decker and ceased manufacturing about 2013. About 3 7/8 x 2 1/8 diameter inches
Weight: 0.845 LB
Measurement: 3.875 x 2.125 IN
Depth: 2.125
Condition report:
Excellent condition. The felt on the base shows no wear. The temperature appears to be accurate.
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