Package Price:
$21.90/5 PER EAUsually ships within 3-5 business days
The Miller 121271 is a premium replacement screw designed to meet the rigorous demands of industrial environments. This fastener is a Socket Head Cap Screw (SHCS) featuring a .250-20 (1/4-20) thread size and a length of 0.50 inches. Manufactured from Grade 8 steel, this screw offers significantly higher tensile strength than standard Grade 5 or Grade 2 hardware, making it suitable for high-stress applications where structural integrity is paramount. The socket head design allows for precise installation using a hex key (Allen wrench), enabling high torque application without the risk of cam-out associated with Phillips or slotted drives.
One of the standout features of this specific part is the inclusion of a locking patch (LKG PATCH) on the threads. In heavy machinery and industrial equipment, constant vibration can cause standard fasteners to back out over time, leading to loose panels, rattling components, or even mechanical failure. The locking patch creates interference between the threads, increasing friction and effectively preventing the screw from loosening during operation. This self-locking capability eliminates the need for separate lock washers or liquid thread lockers, streamlining the assembly and repair process.
This product is sold as a convenient package of 5 screws, ensuring you have the necessary quantity for repairs or to keep as spare stock in your maintenance inventory. Whether you are repairing a specific piece of Miller equipment or require a high-grade, vibration-resistant 1/4-20 fastener for a custom fabrication project, the Miller 121271 delivers the reliability and performance expected from top-tier industrial hardware. Its plain finish is typical for internal machine components where plating thickness might interfere with precision tolerances.
Key Features:
| Additional Information |
|---|
| Brand:Miller |
| Packaging Description:5 PER EA |
| Thread Size:1/4-20 UNC |
| Length:0.5 in |
| Grade:Grade 8 |
| Head Style:Socket Head Cap |
| Drive Type:Hex / Allen |
| Feature:Locking Patch |
