EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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BigHead® Collars consist of an internally threaded collar welded to a large perforated head. Standard collar lengths range from 5-22 mm, and standard heads range in size from 19-58 mm across. They are available in several different standard head shapes, to suit your specific application needs, with or without a sighted center hole and customized shapes and sizes are readily available. Their large perforated "head" provides an invisible, molded-in fastener, fixed for life, with very high torque and shear resistance. These fasteners are made from mild steel or stainless steel.
BigHead® Square Head Bondable Collar Nuts
Unit of Measure
1 

Item #

Item Name

Thread Size

Length

Head Diameter

SF2/B32-M4x10 N/A BigHead® M4 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M4 N/A 10 mm N/A 32 x 32 mm
SF2/B32-M5x10 N/A BigHead® M5 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M5 N/A 10 mm N/A 32 x 32 mm
SF2/B32-M6x10 N/A BigHead® M6 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 10 mm N/A 32 x 32 mm
SF2/B32-M6x15 N/A BigHead® M6 x 15 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 15 mm N/A 32 x 32 mm
SF2/B32-M6x20 N/A BigHead® M6 x 20 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 20 mm N/A 32 x 32 mm
SF2/B32-M8x10 N/A BigHead® M8 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 10 mm N/A 32 x 32 mm
SF2/B32-M8x15 N/A BigHead® M8 x 15 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 15 mm N/A 32 x 32 mm
SF2/B32-M8x20 N/A BigHead® M8 x 20 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 20 mm N/A 32 x 32 mm
SF2/S32-M4x5 N/A BigHead® M4 x 5 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M4 N/A 5 mm N/A 32 x 32 mm
SF2/S32-M6x10 N/A BigHead® M6 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 10 mm N/A 32 x 32 mm
SF2/S32-M6x15 N/A BigHead® M6 x 15 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 15 mm N/A 32 x 32 mm
SF2/S32-M6x20 N/A BigHead® M6 x 20 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 20 mm N/A 32 x 32 mm
SF2/S32-M8x6 N/A BigHead® M8 x 6 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 6 mm N/A 32 x 32 mm
SF2/S32-M8x10 N/A BigHead® M8 x 10 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 10 mm N/A 32 x 32 mm
SF2/S32-M8x15 N/A BigHead® M8 x 15 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 15 mm N/A 32 x 32 mm
SF2/S32-M8x20 N/A BigHead® M8 x 20 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M8 N/A 20 mm N/A 32 x 32 mm
SF2/S32-M10x20 N/A BigHead® M10 x 20 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M10 N/A 20 mm N/A 32 x 32 mm
SF2/S58-M6x15 N/A BigHead® M6 x 15 Thread Size Stainless Steel Square Head Bondable Collar Nut N/A M6 N/A 15 mm N/A 58 x 58 mm
Unit of Measure
1