AN4-5
Bolt, Machine, Aircraft, Hex Head, 1/4-28 x 5/8, Alloy Steel, Drilled Shank
| A | Head across flats | 0.4375" A/F |
| B | Head height | 0.1719" |
| C | Length | 0.625" |
| D | Body diameter | Ø0.250" |
| E | Thread | 1/4-28 |
Simplified bolt 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 | |
|---|---|---|---|---|
Inter-First AS9120BISO 9001:2015 | — | Contact supplier | 18 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 | bolt |
|---|---|
| Thread size | 1/4-28 |
| Thread class | 3A |
| Threads per inch | 28 |
| Thread diameter | 0.25" |
| Length | 0.625" |
| Body diameter / across flats | 0.25" |
| Head diameter / across flats | 0.4375" |
| Head height | 0.1719" |
| Material | Alloy Steel |
| Finish | Cadmium Plated |
| Head style | Hex |
| Drive type | External Wrenching |
| Tensile strength | 125 ksi |
| Grip Basis | Overall length approximated as dash/8 in |
| Shank Drilled | Yes |
Standards & Cross-References
- Defined byAN4Bolt, Machine, Aircraft, 1/4-28