Stainless Steel Tamper-Resistant Button Head Hex Drive Screws
1/4"-20 Thread Size, 1/2" Long



Thread | |
Size | 1/4"-20 |
Direction | Right Hand |
Spacing | Coarse |
Type | UNC |
Fit | Unified Standard Class 3A |
Tip Type | Flat |
Fastener Head Type | Rounded |
Head | |
Style | Button |
Profile | Standard |
Height | 0.132" |
Diameter | 0.437" |
Drive | |
Style | Tamper-Resistant Hex |
Size | 5/32" |
Material | 18-8 Stainless Steel |
Length | 1/2" |
Threading | Fully Threaded |
Tensile Strength | 70,000 psi |
Specifications Met | ASME B18.3 |
Hardness | Rockwell B70 |
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 | |
Our most corrosion-resistant hex-drive screws for preventing unauthorized access. Also known as pin-in-hex and pin-in-socket drives, these screws have a security pin in the drive that you can only turn with a tamper-resistant hex driver. The deep six-point opening helps them withstand torque without damaging the drive. The button head looks similar to a pan head, but it's lower and more compact, taking up less space.
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.
L-Keys—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.

























