screws › machine screws
3M926-4L18
Screw
Description
Fastener Length: 1-39/64", Thread: 1/4-28, Thread Length: 31/64"
Specifications
| Countersink Angle | 100.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.579 inches minimum and 1.609 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 1.115 inches minimum and 1.135 inches maximum |
| Head Diameter | 0.389 inches minimum and 0.394 inches maximum |
| Head Style | Oval countersunk |
| Internal Drive Style | High-torque |
| Length | 1 39/64 |
| Material | Steel |
| Material Specification | Ams 5629 assn std single material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Surface Treatment | Aluminum and chromate |
| Surface Treatment Specification | Mil-c-83488 ty 2 cl 3 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.444 inches minimum and 0.494 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for 3M926-4L18. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error