|Thread Dash||Thread Size||Part Number|
|LH - L4||1/4-28 UNJF-3B||NAS509L4|
Material - 4130 Alloy Steel Per AMS-S-6758
Finish - Cad Type II, Class 2 Per AMS-QQ-P-416
Heat Treat- 150 KSI Min Per AMS2759
Hardness - 34-38 HRC
WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. www.P65Warnings.ca.gov
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.