Dimco-Gray Co. 645

The Dimco-Gray Co. 645 is a control knob engineered for precise adjustment and long-term durability across industrial, electronic, and mechanical applications. Manufactured by DimcoGray – an ISO 9001:2008 and ISO 13485:2016 registered company – this knob delivers reliable performance through compression and injection molding processes that ensure consistent quality and ergonomic functionality. ## Technical Specifications Material composition typically incorporates thermoset or phenolic compounds selected for environmental resistance and mechanical durability. Alternative material options include polypropylene with brass inserts and ABS plastic variants, depending on application requirements. Thread configurations accommodate standard imperial sizes including 1/4-20, 5/16-18, and 3/8-16, with metric thread options available. Attachment methods include female or male threaded interfaces, brass inserts, brass studs, and thru-hole mounting configurations. The knob meets RoHS and REACH compliance standards, enabling deployment in regulated industrial and medical environments. ## Key Features • Multiple knob design profiles – ball, knurled, lobed, tapered, wing, and fluted – optimize grip characteristics for different operational contexts
• Fluted configurations enhance tactile control, particularly when handling with protective gloves
• Diameter range spans 0.625 to 3.25 inches with variable lengths dependent on knob profile
• Brass insert and stud options provide secure attachment to threaded fasteners ## Typical Applications The 645 control knob serves electronics manufacturing, machinery assembly, instrumentation systems, medical equipment, food processing lines, farm and construction machinery, lawn and outdoor power equipment, and general industrial control panels. ## Compatibility & Integration Verify thread size and attachment method against your mounting interface – available options span 1/4-20, 5/16-18, and 3/8-16 imperial threads plus metric alternatives. Select knob profile based on grip requirements and operator glove compatibility.