- Brand: ZagoSystem of Measurement: Unified (inch)Mil-Spec: NoHead Type: Flat 82°O-Ring Material: Silicone RubberThread Size: 8-32Length: 3/4"Material: Stainless SteelFinish: PlainLocking Element: NoneDrive Size: T15Drive Type: Tamper Resistant TorxThread Fit: Class 2AThread Type: UNC