P/N: ms9557-17
Category: Bolts
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
| Condition | Stock |
|---|---|
| New Surplus | 8 Available |
The MS9557-17 is a 1/4-28 UNJF machine bolt with a 12-point extended-washer head, manufactured from A-286 heat- and corrosion-resistant alloy steel per AMS 5731. This aerospace-grade fastener provides high strength for accessory bracket installations where 12-point drive access is required. The UNJF thread form ensures precise fit with matching hardware in aircraft systems.
Installation requires torque per the applicable aircraft maintenance manual, with length confirmed to MS9557 standard specifications.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
The MS9557-17 is a 1/4-28 UNJF machine bolt with a 12-point extended-washer head, manufactured from A-286 heat- and corrosion-resistant alloy steel per AMS 5731. This aerospace-grade fastener provides high strength for accessory bracket installations where 12-point drive access is required.
The ms9557-17 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.
The ms9557-17 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.
Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.