THREAD: AS8879
MATERIAL:
  • -08 thru -6 sizes - 304 corrosion resistant steel per AMS5697A, or AMS5639 (UNS S30400), or 305 corrosion resistant steel per AMS 5686, or AMS 5686 (UNS S30500).
  • -7 thru -10 sizes - A286 corrosion resistant steel per AMS5732 or AMS5737 (UNS S66286).
FINISH:
  • KFN305C(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 3, and cetyl alcohol lubricant.
  • KFN305CD(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, and Kaylube molybdenum disulfide dry lubricant coat per AS5272, Type I.
  • KFN305DL(*) - Kaylube molybdenum disulfide dry lubricant coat per AS5272, Type I.
  • KFN305E(*) - Silver plate per AMS2410 and cetyl alcohol lubricant.
  • KFN305J(*) - Silver plate per AMS2410.
  • KFN305K(*) - Lubeco 905 solid film lubricant.
  • KFN305PK(*) - Cadmium plated per AMS-QQ-P-416, Type II, Class 2, olive color and cetyl alcohol lubricant.
  • KFN305FA(*) - Kalgard "FA" dry film lubricant.
  • KFN305KC(*) - Kaylube molybdenum disulfide dry lubricant coated per AS5272, Type I and cetyl alcohol lubricant.
PERFORMANCE: Locking torque per NASM25027, except as follows:
  • Reusability 5 cycles required. Test to be done using unplated corrosion resistant steel pin with reduced major diameter thread coated with cetyl alcohol. "FA" coded nuts to be done using unplated titanium pin, with reduced major diameter thread, coated with cetyl alcohol.
  • Axial tensile strength as tabulated, obtained when tested on 180 KSI min. bolts.
TEMPERATURE: "C", "CD", "DL", "FA", "K", "KC" & "PK" codes - 450°F max. "E" and "J" codes -750°F max.
APPLICATIONS: For use on standard to .032 oversized shank bolts.
PACKAGING: Parts are normally supplied in bulk packaging. Add "S" after dash number for spindle packaged nuts for use with K-Fast® automatic tools, or "SS" for parts on "short spindles" for use on lightweight K-Fast® automatic tools. Spindle packaged parts apply thru -5 nuts only. (Example: KFNC4S or KFN305C4SS).
NOTES: "C" and "W" dimensions apply prior to deformation of locking feature.
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Item #

A - MAX

B - MIN

C - MIN

D

H - MAX

M

W

Axial Tensile Strength (LBS. MIN)

Rec'm Seating Torque (IN-LBS)

Approx. Weight (LBS/100)

Thread

KFN305C08 N/A 0.290 N/A 0.273 N/A 0.242 N/A 0.202-0.198 N/A 0.270 N/A 0.112-0.102 N/A 0.220-0.212 N/A 2300 N/A 30-40 N/A 0.150 N/A 0.1640-32 UNJC-3B
KFN305C3 N/A 0.330 N/A 0.295 N/A 0.277 N/A 0.228-0.224 N/A 0.280 N/A 0.112-0.102 N/A 0.251-0.243 N/A 2750 N/A 40-50 N/A 0.210 N/A 0.1900-32 UNJF-3B
KFN305C4 N/A 0.425 N/A 0.398 N/A 0.348 N/A 0.288-0.284 N/A 0.340 N/A 0.117-0.107 N/A 0.313-0.305 N/A 5000 N/A 110-130 N/A 0.410 N/A 0.2500-28 UNJF-3B
KFN305C5 N/A 0.525 N/A 0.497 N/A 0.419 N/A 0.350-0.346 N/A 0.430 N/A 0.127-0.117 N/A 0.376-0.367 N/A 8300 N/A 200-250 N/A 0.680 N/A 0.3125-24 UNJF-3B
KFN305C6 N/A 0.605 N/A 0.577 N/A 0.491 N/A 0.413-0.409 N/A 0.470 N/A 0.127-0.117 N/A 0.439-0.430 N/A 11900 N/A 360-420 N/A 0.960 N/A 0.3750-24 UNJF-3B
KFN305C7 N/A 0.725 N/A 0.677 N/A 0.561 N/A 0.476-0.472 N/A 0.565 N/A 0.142-0.132 N/A 0.502-0.492 N/A 19000 N/A 600-675 N/A 1.520 N/A 0.4375-20 UNJF-3B
KFN305C8 N/A 0.825 N/A 0.777 N/A 0.631 N/A 0.538-0.534 N/A 0.615 N/A 0.142-0.132 N/A 0.564-0.553 N/A 25500 N/A 900-1000 N/A 2.130 N/A 0.5000-20 UNJF-3B
KFN305C9 N/A 0.902 N/A 0.862 N/A 0.702 N/A 0.601-0.597 N/A 0.661 N/A 0.142-0.132 N/A 0.627-0.616 N/A 29900 N/A 1075-1150 N/A 2.900 N/A 0.5625-18 UNJF-3B
KFN305C10 N/A 1.043 N/A 1.003 N/A 0.843 N/A 0.663-0.659 N/A 0.726 N/A 0.142-0.132 N/A 0.752-0.741 N/A 32000 N/A 1400-1550 N/A 5.270 N/A 0.6250-18 UNJF-3B
KFN305CD08 N/A 0.290 N/A 0.273 N/A 0.242 N/A 0.202-0.198 N/A 0.270 N/A 0.112-0.102 N/A 0.220-0.212 N/A 2300 N/A 30-40 N/A 0.150 N/A 0.1640-32 UNJC-3B
KFN305CD3 N/A 0.330 N/A 0.295 N/A 0.277 N/A 0.228-0.224 N/A 0.280 N/A 0.112-0.102 N/A 0.251-0.243 N/A 2750 N/A 40-50 N/A 0.210 N/A 0.1900-32 UNJF-3B
KFN305CD4 N/A 0.425 N/A 0.398 N/A 0.348 N/A 0.288-0.284 N/A 0.340 N/A 0.117-0.107 N/A 0.313-0.305 N/A 5000 N/A 110-130 N/A 0.410 N/A 0.2500-28 UNJF-3B
KFN305CD5 N/A 0.525 N/A 0.497 N/A 0.419 N/A 0.350-0.346 N/A 0.430 N/A 0.127-0.117 N/A 0.376-0.367 N/A 8300 N/A 200-250 N/A 0.680 N/A 0.3125-24 UNJF-3B
KFN305CD6 N/A 0.605 N/A 0.577 N/A 0.491 N/A 0.413-0.409 N/A 0.470 N/A 0.127-0.117 N/A 0.439-0.430 N/A 11900 N/A 360-420 N/A 0.960 N/A 0.3750-24 UNJF-3B
KFN305CD7 N/A 0.725 N/A 0.677 N/A 0.561 N/A 0.476-0.472 N/A 0.565 N/A 0.142-0.132 N/A 0.502-0.492 N/A 19000 N/A 600-675 N/A 1.520 N/A 0.4375-20 UNJF-3B
KFN305CD8 N/A 0.825 N/A 0.777 N/A 0.631 N/A 0.538-0.534 N/A 0.615 N/A 0.142-0.132 N/A 0.564-0.553 N/A 25500 N/A 900-1000 N/A 2.130 N/A 0.5000-20 UNJF-3B
KFN305CD9 N/A 0.902 N/A 0.862 N/A 0.702 N/A 0.601-0.597 N/A 0.661 N/A 0.142-0.132 N/A 0.627-0.616 N/A 29900 N/A 1075-1150 N/A 2.900 N/A 0.5625-18 UNJF-3B
KFN305CD10 N/A 1.043 N/A 1.003 N/A 0.843 N/A 0.663-0.659 N/A 0.726 N/A 0.142-0.132 N/A 0.752-0.741 N/A 32000 N/A 1400-1550 N/A 5.270 N/A 0.6250-18 UNJF-3B
KFN305DL08 N/A 0.290 N/A 0.273 N/A 0.242 N/A 0.202-0.198 N/A 0.270 N/A 0.112-0.102 N/A 0.220-0.212 N/A 2300 N/A 30-40 N/A 0.150 N/A 0.1640-32 UNJC-3B
KFN305DL3 N/A 0.330 N/A 0.295 N/A 0.277 N/A 0.228-0.224 N/A 0.280 N/A 0.112-0.102 N/A 0.251-0.243 N/A 2750 N/A 40-50 N/A 0.210 N/A 0.1900-32 UNJF-3B
KFN305DL4 N/A 0.425 N/A 0.398 N/A 0.348 N/A 0.288-0.284 N/A 0.340 N/A 0.117-0.107 N/A 0.313-0.305 N/A 5000 N/A 110-130 N/A 0.410 N/A 0.2500-28 UNJF-3B
KFN305DL5 N/A 0.525 N/A 0.497 N/A 0.419 N/A 0.350-0.346 N/A 0.430 N/A 0.127-0.117 N/A 0.376-0.367 N/A 8300 N/A 200-250 N/A 0.680 N/A 0.3125-24 UNJF-3B
KFN305DL6 N/A 0.605 N/A 0.577 N/A 0.491 N/A 0.413-0.409 N/A 0.470 N/A 0.127-0.117 N/A 0.439-0.430 N/A 11900 N/A 360-420 N/A 0.960 N/A 0.3750-24 UNJF-3B
KFN305DL7 N/A 0.725 N/A 0.677 N/A 0.561 N/A 0.476-0.472 N/A 0.565 N/A 0.142-0.132 N/A 0.502-0.492 N/A 19000 N/A 600-675 N/A 1.520 N/A 0.4375-20 UNJF-3B
KFN305DL8 N/A 0.825 N/A 0.777 N/A 0.631 N/A 0.538-0.534 N/A 0.615 N/A 0.142-0.132 N/A 0.564-0.553 N/A 25500 N/A 900-1000 N/A 2.130 N/A 0.5000-20 UNJF-3B
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