MS21042L4
Nut, Self-Locking, Reduced Hex, 1/4-28, Alloy Steel, Dry Film Lube
Replaces AN363.
| A | Across flats | 0.344" A/F |
| B | Height | 0.224" |
| C | Thread | 1/4-28 |
Simplified nut representation, drawn to scale from the listed catalog dimensions — not the exact profile of this part's standard.
Where to Buy
| Supplier | Price | Availability | Updated | |
|---|---|---|---|---|
Bisco Industries AS9100DAS9120B | $1.49/ EA | Available to order | 17 hours ago | View product ↗ |
Inter-First AS9120BISO 9001:2015 | — | Contact supplier | 17 hours ago | Request quote ↗ |
Only AS9100-series certified suppliers are listed, so every source here can provide lot traceability. “Available to order” means the supplier will accept an order — it does not confirm shelf stock. Quote-only listings require supplier confirmation of price and availability. Prices are the supplier's own as of the time shown and may have changed since; the supplier's page is authoritative.
Technical Specifications
| Category | nut |
|---|---|
| Thread size | 1/4-28 |
| Thread class | 3B |
| Threads per inch | 28 |
| Thread diameter | 0.25" |
| Head diameter / across flats | 0.344" |
| Head height | 0.224" |
| Material | Alloy Steel |
| Finish | Dry Film Lubricant |
| Head style | Reduced Hex |
| Drive type | External Wrenching |
| Tensile strength | 160 ksi |
| Max Temp F | 450 |
| Locking Feature | All-metal, deformed thread |