SITE SEARCH
GO
INVENTORY SEARCH
GO
PART # SEARCH
GO
COMPANY
»
ABOUT US
COMPANY NEWS
CORPORATE ENVIRONMENTAL STATEMENT
EMPLOYMENT
QUALITY APPROVALS & CERTIFICATIONS
TRADEMARKS
TRADESHOWS
PRODUCTS
»
PEM
®
Fasteners
microPEM
®
Fasteners
autoPEM
®
Fasteners
PEMSERTER
®
Equipment
Atlas
®
Blind Threaded Fasteners
PennEngineering Automotive Fasteners
PROFIL Fasteners
SI
®
Inserts For Plastics
StickScrew
®
Small Screw Insertion System
Automotive Solutions
New Products & Capabilities
Value Added Options
TECHNICAL SUPPORT
»
Ask a Technical Question
MIL Specs / NAS Reference
Environment / Govt. Compliance / UL
Part Prototype Sample Kits
Fastener Installation Animations
PEMspec™ iPhone®/iPad® APP
Fastener Tutorial
Product Selector & CAD Library
Frequently asked questions
TECH DOCUMENTS & WRITINGS
General Reference Tools & Charts
Technical Services & Training
Glossary of Terms
Value-Added Options
Licensed Technologies
Video Library
PRODUCT LITERATURE
REPRESENTATIVES & DISTRIBUTORS
CONTACT US
PRODUCT SELECTOR
&
CAD LIBRARY
CLICK TO ENTER
User Tips
E-CONTACT
Technical Support
Request Catalog
See all locations >
Current Issue >
Sign Up >
Past Issues
FREE PEMspec™ App
Stay Connected with PennEngineering®
Registered Users
–
Sign In
All Categories
>
PEM® Brand Fasteners for Metal Sheets and Panels
>
Studs and Pins for Sheet Metal
>
High Tensile Strength Studs, Non Flush – Types HF109, HFG8
>
High-Tensile Strength Studs - Types HFG8™, HF109™ - Unified
>
Part # HFG8-0420-8ZI
Export to PDF
Export to PDF
Printable Page
Email This Page
Save To Favorites
Please wait…
Part # HFG8-0420-8ZI, High-Tensile Strength Studs - Types HFG8™, HF109™ - Unified
PEM® self-clinching studs
are installed by placing them in properly sized holes in the sheets and squeezing into place with any standard press. The squeezing action embeds the head of the stud into the sheet. The metal displaced by the head flows smoothly and evenly around the ribs and into the annular groove - creating a flushhead assembly and securely locking the stud into the sheet with high torque-out and pushout resistances.
HFH (heavy-duty) Studs
replace weld studs with easier installation at lower costs. The large stud head which projects above the sheet material distributes the axial tightening force over a large area thereby improving pull through resistance.
HFG8 and HF109 (heavy-duty high tensile strength) Studs
are manufactured for the most demanding applications from medium carbon alloy steel, then heat-treated to high strength and hardness qualities.
Types HFG8 and HF109 are for heavy-duty applications in sheets as thin as .040”.
Grade 8 and property class 10.9 studs meeting 150 ksi/1040 MPa minimum.
Recommended for use in steel or HSLA steel sheets HRB (Rockwell “B” Scale) 89 or less and HB (Hardness Brinell) 180 or less.
Large head diameter spreads compressive stress on panel.
To be sure that you are getting genuine PEM products, look for the PEM stamp. Studs within the size range of the SAE and ISO specs are also identified with the Grade 8 and 10.9 head markings respectively.
Thread size #10-32 does not have SAE head marking since it is technically not within the size range of the specification.
larger image
larger image
Specifications
Thread Size
.250-20 (1/4-20)
Thread Code
0420
Length Code
8
Min. Sheet Thickness
.040
in
Hole Size in Sheet + .005 - .000
.250
in
Max. Hole in Attached Parts
.340
in
L - Length ± .015
1
.500
in
larger image
H ± .01
.507
in
S Max.
.125
in
T Max.
.090
in
Min. Dist. Hole C/L to Edge
.709
in
For Use in Sheet Hardness
HRB 89 / HB 180 or Less
Thread Specification
External, ANSI B1.1, 2A
Fastener Material
Heat-Treated Medium Carbon Alloy Steel
Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
CAD Supplier
PennEngineering® (PEM®)
1
Other lengths available up to a maximum of 1.5” (unified) on special order.
MORE IMAGES
·
HFG8_Installed
VIEW CAD DRAWING
·
3D
·
2D Front View
·
2D Right Side View
·
2D Sales Drawing
DOWNLOADS
PEM Bulletin FH
View Animation
PEMSERTER® Tooling Selector
Home
|
Contact Us
|
Company News
|
Channel Partners
|
Suppliers
Copyright ©2000 - 2011, PennEngineering •
Terms of Use
• Questions, comments or problems should be directed to the
webadmin