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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This series utilizes a variety of grommets which must be installed into the top panel. They significantly enhance the system’s performance.
Contact us for strengths for stainless steel stud assemblies and for other styles, materials, or finishes.
Unit of Measure

Specifications

Series

 N/A 40S41

Stud Material

 N/A 410 CRES Heat Treated (38 min HRC)

Cup Material

 N/A CRES

Spring Material

 N/A CRES

Cross Pin Material

 N/A 17-7 CRES

Head Style

 N/A Slotted

Finish

 N/A Passivate

L

 N/A 0.623-0.633 in

S

 N/A 0.900 in

Ultimate Tensile Strength

 N/A 735.000 lb

Working Strength

 N/A 500.000 lb

Stud Grip Increments

 N/A 0.030 in

Minimum Preload

 N/A 50.000 lb

Maximum Service Temperature

 N/A 550.000 ºF

Weight/100

 N/A 1.360 lb

Notes

N/A

  • Cross Pin must withstand 50 lb pushout force and retain sym. about centerline of stud with ±.02
  • <4> (Cross Pin Width) 0.371-0.386 for -1S, -1SC, -1SW stud only
    For 11-S/ -SC and longer use
    L min= .353 + (.030 x Dash No.)
    L max = L min + .010
    For 11-SW and longer use
    L max = L min + .015
    S = .63 + (.03 x Dash No.)
    Approximate weight = lb/100
    Slotted and Cruciform = .9144 + (.0186 x Dash No.)
    Wing = 1.562 + (.0186 x Dash No.)