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Thumb nuts offer a unique and finished look that allow for a nut to be tightened without tools. Lyn-Tron's thumb nuts are offered in all common female threads and in both the round knurled thumb nuts and hex style thumb nuts. Thumb nuts can be used to secure electrical wiring in electrical components or to temporarily fasten parts that need adjustments, changing, or removing frequently. The hex shape allows for greater torquing as the flat sides allow for wrench tightening. Base metal is yellow, but many plating options are available when different colors are required.

thumb-nut_large
Unit of Measure
1 

Item #

Material

Head Diameter

Female Thread

Head Length

OD

Washer Dia

OAL

Washer Length

Part Description

BR5580-00 N/A Brass N/A 6 mm N/A M2.5 x 0.45 N/A 3 mm N/A 6 mm N/A 5 mm N/A 6 mm N/A 3 mm N/A M2.5X0.45 Female Thread, Brass Metric Hex Thumb Nut
BR5581-00 N/A Brass N/A 8 mm N/A M3 x 0.5 N/A 3 mm N/A 8 mm N/A 6 mm N/A 6 mm N/A 3 mm N/A M3X0.5 Female Thread, Brass Metric Hex Thumb Nut
BR5582-00 N/A Brass N/A 10 mm N/A M3.5 x 0.6 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M3.5X0.6 Female Thread, Brass Metric Hex Thumb Nut
BR5583-00 N/A Brass N/A 10 mm N/A M4 x 0.7 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M4X0.7 Female Thread, Brass Metric Hex Thumb Nut
BR5584-00 N/A Brass N/A 13 mm N/A M5 x 0.8 N/A 4 mm N/A 13 mm N/A 11 mm N/A 9 mm N/A 5 mm N/A M5X0.8 Female Thread, Brass Metric Hex Thumb Nut
BR5585-00 N/A Brass N/A 13 mm N/A M6 X 1 N/A 4 mm N/A 13 mm N/A 12 mm N/A 9 mm N/A 5 mm N/A M6X1 Female Thread, Brass Metric Hex Thumb Nut
BR5586-00 N/A Brass N/A 19 mm N/A M8 x 1.25 N/A 6 mm N/A 19 mm N/A 16 mm N/A 12 mm N/A 6 mm N/A M8X1.25 Female Thread, Brass Metric Hex Thumb Nut
SS5580-00 N/A Stainless Steel N/A 6 mm N/A M2.5 x 0.45 N/A 3 mm N/A 6 mm N/A 5 mm N/A 6 mm N/A 3 mm N/A M2.5X0.45 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5581-00 N/A Stainless Steel N/A 8 mm N/A M3 x 0.5 N/A 3 mm N/A 8 mm N/A 6 mm N/A 6 mm N/A 3 mm N/A M3X0.5 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5582-00 N/A Stainless Steel N/A 10 mm N/A M3.5 x 0.6 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M3.5X0.6 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5583-00 N/A Stainless Steel N/A 10 mm N/A M4 x 0.7 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M4X0.7 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5584-00 N/A Stainless Steel N/A 13 mm N/A M5 x 0.8 N/A 4 mm N/A 13 mm N/A 11 mm N/A 9 mm N/A 5 mm N/A M5X0.8 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5585-00 N/A Stainless Steel N/A 13 mm N/A M6 X 1 N/A 4 mm N/A 13 mm N/A 12 mm N/A 9 mm N/A 5 mm N/A M6X1 Female Thread, Stainless Steel Metric Hex Thumb Nut
SS5586-00 N/A Stainless Steel N/A 19 mm N/A M8 x 1.25 N/A 6 mm N/A 19 mm N/A 16 mm N/A 12 mm N/A 6 mm N/A M8X1.25 Female Thread, Stainless Steel Metric Hex Thumb Nut
ST5580-00 N/A Steel N/A 6 mm N/A M2.5 x 0.45 N/A 3 mm N/A 6 mm N/A 5 mm N/A 6 mm N/A 3 mm N/A M2.5X0.45 Female Thread, Steel Metric Hex Thumb Nut
ST5581-00 N/A Steel N/A 8 mm N/A M3 x 0.5 N/A 3 mm N/A 8 mm N/A 6 mm N/A 6 mm N/A 3 mm N/A M3X0.5 Female Thread, Steel Metric Hex Thumb Nut
ST5582-00 N/A Steel N/A 10 mm N/A M3.5 x 0.6 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M3.5X0.6 Female Thread, Steel Metric Hex Thumb Nut
ST5583-00 N/A Steel N/A 10 mm N/A M4 x 0.7 N/A 3 mm N/A 10 mm N/A 9 mm N/A 7 mm N/A 4 mm N/A M4X0.7 Female Thread, Steel Metric Hex Thumb Nut
ST5584-00 N/A Steel N/A 13 mm N/A M5 x 0.8 N/A 4 mm N/A 13 mm N/A 11 mm N/A 9 mm N/A 5 mm N/A M5X0.8 Female Thread, Steel Metric Hex Thumb Nut
ST5585-00 N/A Steel N/A 13 mm N/A M6 X 1 N/A 4 mm N/A 13 mm N/A 12 mm N/A 9 mm N/A 5 mm N/A M6X1 Female Thread, Steel Metric Hex Thumb Nut
ST5586-00 N/A Steel N/A 19 mm N/A M8 x 1.25 N/A 6 mm N/A 19 mm N/A 16 mm N/A 12 mm N/A 6 mm N/A M8X1.25 Female Thread, Steel Metric Hex Thumb Nut
Unit of Measure
1