Tamper-Resistant Drilled Spanner Truss Head Screws
Extra-Wide, 1/4"-20 Thread, 3/4" Long
Thread | |
Size | 1/4"-20 |
Direction | Right Hand |
Spacing | Coarse |
Type | UNC |
Fit | Unified Standard Class 2A |
Tip Type | Flat |
Fastener Head Type | Rounded |
Head | |
Style | Truss |
Profile | Wide |
Height | 0.15" |
Diameter | 0.573" |
Drive | |
Style | Drilled Spanner |
Size | No. 14 |
Length | 3/4" |
Threading | Fully Threaded |
Tensile Strength | 70,000 psi |
Hardness | Rockwell B87 |
Material | 18-8 Stainless Steel |
Passivation | Passivated |
Performance | Corrosion Resistant, Tamper Resistant |
Screw Size Decimal Equivalent | 0.250" |
System of Measurement | Inch |
Country of Origin | United States |
DFARS Compliance | Not Specialty Metals Compliant |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Related Products | |
These screws have a wide head that distributes weight and a two-hole design that deters tampering. They only turn with a drilled spanner driver, making them hard to force with other tools. Also known as pig-nose drives, their two contact points won't withstand much torque, so they're good for light duty tasks. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. Their wide head spreads out pressure without adding a washer to reduce the risk of crushing thin material, such as sheet metal.
Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.
Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.
Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.
The information in this 3-D model is provided for reference only.