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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Unit of Measure

Specifications

Series

 N/A RLRR

Basic Lockring Size

 N/A 72
Material Type1 N/A 4130 Steel or 4140 Steel or 8740 Steel

Material Specification

 N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel)

Heat Treat

 N/A 36-45 HRc per AMS 2759

Finish

 N/A Zinc Plate per QQ-Z-325, Type II, Class 3

A - Dia ±.005

 N/A 1.078 in

B - Thickness ±.005

 N/A 0.176 in

C ±.005

 N/A 0.056 in

E - Dia +.004 -.003

 N/A 0.908 in

F - Diameter

 N/A 0.950 in

G - Dia +.005 -.004

 N/A 1.170 in

H - Dia +.003 -.006

 N/A 1.113 in

J - Nr. of Internal Serrations

 N/A 38.000

K +1º -2º

 N/A 102.000 º

M - Nr. of External Serrations (Total Teeth; Both Segments)

 N/A 22.000

N

 N/A 102.000 º

R - Radius, 2 Places

 N/A 0.551 in

Notes

N/A

  • Fillets rad 0.015 max.
  • Unless otherwise specified, break sharp edges 0.003-0.015, except serrations.
  • Drawing symbols and tolerance per ANSI Y14.5
  • 1 The Preferred Alloy Steel Material is the 4130, 4140 or 8740 (SA code).