Description

Metallics Flange Lock Nut, Hex Serrated, Series: SFN, Measurement System: Imperial, 1/4-20 Thread, Stainless Steel, Material Grade: 18-8, 0.428 to 0.438 in Width Across Flats, 0.222 to 0.236 in Height, 0.574 to 0.594 in Flange

Features:

• Hex nut with an enlarged circular base flaring out from the bottom of the nut
• The bearing surface of the flange has serrations which displace material on the mating surface when the nut is wrenched in to place, forming a connection which resists loosening
• Requires a greater amount of torque to loosen than to tighten the nut
• Will span oversized or poorly aligned holes
• Flange provides a more uniform bearing stress to clamp force ratio than other low carbon lock nuts
• Does not gall screw threads

Standards/Approval:

• ASME B18.16.4-2008

Diameter - Thread Size	1/4-20
Flange Size	0.574 to 0.594 in
Height	0.222 to 0.236 in
Material	Stainless Steel
Material Grade	18-8
Measurement System	Imperial
Series	SFN
Type	Hex Serrated
Width Across Flats	0.428 to 0.438 in
Manufacturer	METALLICS WEST INC