THREAD: AS8879
MATERIAL:

• Nut - 304 corrosion resistant steel per AMS 5697A or AMS5639 (UNS S30400), or corrosion resistant steel per AMS 5686 (UNS S3500).
• Washer - 17-4PH stainless steel per AMS 5643 (UNS S17400).

HEAT TREAT: Washer - H-900 condition.
FINISH:

• Nut

KFN522C(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, and cetyl alcohol lubricant.
KFN522DL(*) - Kaylube molybdenum disulfide dry lubricant coat per AS5272.
KFN522E(*) - Silver plate per AMS 2410 and cetyl alcohol lubricant.
KFN522K(*) - Lubeco 905 solid film lubricant.
• Washer

KFN522-(*) - Kaylube molybdenum disulfide dry lubricant coat per AS5272.
KFN522-(*)E - Silver plate per AMS 2410 and cetyl alcohol lubricant.
KFN522-(*)H - Cadmium plate per AMS-QQ-P-416, Type II, Class 2.
KFN522-(*)NF - Passivate per AMS2700.
KFN522-(*)Z - Alumazite "Z" per NAS4006.

PERFORMANCE: KFS 1011, except as follows:

• Locking torque limited to 5 unseated cycles.
• Axial tensile strength as tabulated when tested on 180 KSI min. bolts.

APPLICATIONS: For use on standard to .032 oversize shank bolts.
MISALIGNMENT: Up to 7° maximum from centered position.
PACKAGING: Parts are normally supplied in bulk packaging. Add "S" after dash number for spindle packaged nuts for use with K-Fast automatic tools. (Example: KFN522DL4S).