THREAD: AS8879 MATERIAL: 7075 aluminum alloy per AMS-QQ-A-225/9. Aged to T73 condition per AMS277. FINISH:
KFN626-(*) - Anodized per MIL-A-8625, Type II, Class 2, color black and K76 lubricant.
KFN626-(*)A - Anodized per MIL-A-8625, Type II, Class 2, color black and cetyl alcohol lubricant per A/DET0013.
PERFORMANCE: NASM25027, except as follows:
1 cycle use.
Maximum locking torque and axial tensile strength to be met when tested with aluminum IVD coated titanium bolts with AS8879 threads having a reduced major diameter such as NAS6803 thru NAS6808.
Wrench torque as tabulated.
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: KFN626-4S). NOTES: "C" and "W" dimensions apply before forming self-locking feature.
Unit of Measure
Specifications
A - MAX
N/A0.422
B - MIN
N/A0.398
C - MIN
N/A0.348
D - MIN
N/A0.254
H - MAX
N/A0.280
M
N/A0.100-0.090
S - MIN
N/A0.080
W
N/A0.313-0.305
Axial Tensile Strength (LBS. MIN)
N/A3200
Wrench Torque (LBF-IN MIN)
N/A85
Locking Torque (LBF-IN)
N/A20.0-3.5
Approx. Weight (LBS/100)
N/A0.150
Finish
N/AAnodized per MIL-A-8625, Type II, Class 2, Color Black and K76 Lubricant
Howmet