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These 4-40 x 1/4 in. security machine screws are intended for buyers who need a fastening option that helps deter removal with ordinary screwdrivers. Their flat spanner heads provide a clean, flush installation in metal surfaces and can be countersunk in softer materials.
This 100-pack contains UNC-threaded 4-40 machine screws measuring 1/4 in. long. Each screw has a flat spanner drive head and is made from 18-8 stainless steel. Installation requires a matching driver bit; the drive design supports positive tool engagement and torque transfer.
Key Features:
Choose these 4-40 UNC flat-head spanner screws when a 1/4 in. stainless steel machine screw with a security-oriented drive and flush-fitting head is needed.
| Country of Origin: | Made in USA |
| Material: | Stainless Steel |
| Product Depth: | 1.375" |
| Product Height: | 3.25" |
| Product Type: | Spanner Drive Screws |
| Product Width: | 2.25" |
| Quantity Included: | 1 |
| Shipping Weight: | 1 lbs |
| Manufacturer Part Number: | 121682 |
| Length: | 1/4 in |
| Drill Size: | #4 in |
| Head: | Flat |
| Size: | #4 |
| Thread: | Coarse in |
| Unit of Measurement: | Inch (Imperial) |
| Brand: | Tamper-Pruf Screws |
| Description: | Tamper Resistant Machine Screw |
| Drive: | Spanner |
| Finish: | Stainless Steel |
| Full or Partial Thread: | Full |
| Grade: | 18-8 Stainless Steel |
| Manufacturers Part Number: | 121682 |
| Package Quantity: | 100 |
| Screw Type: | Machine Screw |
| Width: | 1.38 in |
| Height: | 3.25 in |
| Depth: | 2.25 in |
No additional information available.
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