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
Print Back
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 40S45

Stud Material

 N/A 300 CRES per ASTM A276, ASTM A580, AMS-QQ-S-763, ASTM A493

Cup Material

 N/A 300 CRES per ASTM A167, ASTM A240

Spring Material

 N/A Alloy Wire per AMS5699 (Inconel "X")

Cross Pin Material

 N/A 17-7PH CRES per AMS5678

Spacer Material

 N/A 300 CRES per ASTM A666, ASTM 4240

Head Style

 N/A Cross Recess

Finish

 N/A Passivate per AMS2700

Cup Finish

 N/A Black Oxide Coating per MIL-DTL-13924

L

 N/A 0.653-0.663 in

C

 N/A 0.442 in

S

 N/A 0.930 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 700.000 ºF

Weight/100

 N/A 1.125 lb

Notes

N/A

  • Cross Pin will withstand 50 lb pushout force and retain sym. about centerline of stud within .02
  • For Stud selection and Installation data see 4002 series
  • Tool marks may appear at swage area due to the nature of assembly process
    For -21 and longer use
    L/L1 min = (Dash No. x .030) + .353
    Lmax = Lmin + .010
    L1max = Lmin + .015
    S = (Dash No. x .03) + .63
    Approximately weight = lb/100
    Suffix None/B = .930 + (Dash No. x .0195)
    Suffix A = 1.582 + (Dash No. x .0195)