self-tapping screw sleeve, external thread lengthened guide section, convenient and fast assembly, special length enhances self-tapping strength, internal full thread;
LBL series self-tapping screw sleeve, no groove, blind hole thread, external thread plus long thread, can provide larger load force.
Common specification: M3/M4/M6/M8/M10/M12
Material: stainless steel, carbon steel, etc