18-8 Stainless Steel Flanged Button Head Screw
1/4"-20 Thread, 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 | Flanged, Rounded |
Head | |
Style | Button |
Profile | Wide |
Height | 0.132" |
Diameter | 0.429" |
Drive | |
Style | Hex |
Size | 5/32" |
Material | 18-8 Stainless Steel |
Length | 1/2" |
Flange Diameter | 0.563" |
Threading | Fully Threaded |
Tensile Strength | 70,000 psi |
Hardness | Rockwell B70 |
Passivation | Passivated |
Performance | Corrosion Resistant |
Screw Size Decimal Equivalent | 0.250" |
System of Measurement | Inch |
Country of Origin | United States |
DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (01/21/2025, 247 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Secure thin and soft materials in corrosive environments without needing a separate washer. A flange on these screws spreads pressure evenly over a wide area. Made of stainless steel, they won't rust, but they're not as strong as alloy steel. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.
Head height includes the flange. Length is measured from under the flange.
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.
The information in this 3-D model is provided for reference only.