Types FE, FEO and UL are self-locking. Types FE and FEO thread locking torque performance is equivalent to applicable NASM25027 specifications. Ty
- 1 Shank code applicable only to Types U and UL fasteners.
- 2 In applications between the sheet thicknesses for your thread size, see last paragraph of installation data on page FE-6. Knurled collar may fracture if fastener is used in sheets thicker than the specified range and the screw is tightened beyond maximum
- 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.