THREAD: AS8879
MATERIAL:
  • -08 thru -6 sizes - 304 corrosion resistant steel per AMS5697, or AMS5639 (UNS S30400), or 305 corrosion resistant steel per AMS 5685, 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 plus cetyl alcohol lubricant per AS87132.
  • KFN305CD(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, and solid film lubricant coat per AS5272.
  • KFN305DL(*) - Solid film lubricant coat per AS5272.
  • KFN305E(*) - Silver plate per AMS2410 and cetyl alcohol lubricant coat per AS87132.
  • KFN305J(*) - Silver plate per AMS2410.
  • KFN305K(*) - Lubeco 905 solid film lubricant.
  • KFN305PK(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, olive color and cetyl alcohol lubricant coat per AS87132.
  • KFN305FA(*) - Kalgard Type "FA" solid film lubricant coat per AS5272.
  • KFN305KC(*) - Solid film lubricant coat per AS5272 and cetyl alcohol lubricant coat per AS87132.
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)

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
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
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
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
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 12700 N/A 360-420 N/A 0.960
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
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
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
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
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
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
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
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
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 12700 N/A 360-420 N/A 0.960
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
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
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
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
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
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
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
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
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 12700 N/A 360-420 N/A 0.960
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
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
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