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 - 4037 alloy steel per AMS 6300 (UNS G40370) or C1050 carbon steel per AMS 5085 (UNS G10500).
  • Washer - C1050 carbon steel per AMS 5085 (UNS G10500).
FINISH:
  • Nut - Cadmium plate per AMS-QQ-P-416 Type II, Class 2 and Kaylube molybdenum disulfide dry lubricant per AS5272, Type I.
  • Washer - Cadmium plate per AMS-QQ-P-416, Type II, Class 3.
PERFORMANCE: NASM25027 except as follows:
  • Axial tensile strength as tabulated based on 160 KSI.
Unit of Measure

Specifications

A - MAX

 N/A 0.520

B - MIN

 N/A 0.460

H - MAX

 N/A 0.245

P - REF

 N/A 0.265

W

 N/A 0.313 in0.313-0.305

Axial Tensile Strength (LBS. MIN)

 N/A 6200

Approx. Weight (LBS/100)

 N/A 0.500

Thread Type

 N/A Unified

Configuration 1

 N/A Hex

Configuration 2

 N/A Captive Washer

Lock

 N/A Crimp Lock

Simplified Material

 N/A Alloy Steel

Strength

 N/A 160KSI - 1100Mpa

Temperature

 N/A 450°F - 235°C

Thread

 N/A 0.2500-28 UNJF-3B

Part Family

 N/A HW19373