Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
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THREAD: AS8879
MATERIAL:
Nut and cradle - 8740 per AMS 6322 or 4340 per AMS 6415 alloy steel.
Roll Pin - 300 series corrosion resistant steel.
FINISH:
  • Nut - Cadmium plate per AMS-QQ-P-416, Type II, Class 2 and Kaylube molybdenum disulfide dry lubricant per AS5272, Type I.
  • Cradle - Cadmium plate per AMS-QQ-P-416, Type II, Class 2.
  • Roll Pin - Passivate per AMS2700.
FLOATABILITY: .028 minimum on "X" axis; .016 maximum end to end.
APPLICATION: NASM25027, as applicable per NAS 577. F1800 is for use in applications requiring a high strength nut where access is restricted.
Unit of Measure

Specifications

H - MAX

 N/A 0.406

L (± .010)

 N/A 0.625

D
-.000
+.010

 N/A 0.281

S
+.000
-.010

 N/A 0.320

T ± .005

 N/A 0.125

W
+.000
-.003

 N/A 0.528

Install Hole Diameter

 N/A 0.535-0.531

Axial Tensile Strength (LBS. MIN)

 N/A 7200

Approx. Weight (LBS/100)

 N/A 1.500

Thread

 N/A 0.2500-28 UNJF-3B