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 retainer - A286 corrosion resistant steel per AMS5525 and AMS5732 (UNS S66286), heat treated.
FINISH:
  • Nut - Passivated per AMS2700 and Kaylube molybdenum disulfide dry film lubricant coat per AS5272, Type I.
  • Retainer - Passivated per AMS2700.
PERFORMANCE: NASM25027.
APPLICATION: For use with materials such as aluminium alloys, brass and copper.
TEMPERATURE: 500°F
NOTES:
  1. Installation data: use Kaylock tool number KT7202, or KT7204
  2. FLOATABILITY: .015 min. radially from centered position.
  3. Proper installation tool must fit over "W" dimension.
"W" dimension may be elliptical shape within tolerance after assembly of nut into retainer.
Unit of Measure

Specifications

A - MAX

 N/A 0.040

B - MAX

 N/A 0.311

C - MIN

 N/A 0.220

E REF

 N/A 0.125

H - MAX

 N/A 0.250

J - MIN

 N/A 0.037

N - REF

 N/A 0.200

W ± .015

 N/A 0.375

Approx. Weight (LBS/100)

 N/A 0.300

Recommended Installation Hole Dia.
+.004
-.001

 N/A 0.312

Thread

 N/A 0.1640-32 UNJC-3B