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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Studs and Pins for Sheet Metal > Type HFLH™ Hard Panel Studs > Type HFLH™ Hard Panel Studs - Unified > Part # HFLH-0420-12ZI  

Part # HFLH-0420-12ZI, Type HFLH™ Hard Panel Studs - Unified


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  • Installs into thinner, harder, high strength steel materials (high strength steel sheets up to 700 MPa maximum ultimate tensile)
  • Allows overall weight reduction for all vehicles
  • Provides lower installed cost
Compare to other thin sheet fastening devices:
  • Addresses environmental concerns
  • Lighter weight
  • Close to edge of panel mounting
  • No embossing required
  • Hardened stud material provides stronger thread strength
  • Can be installed automatically using press or in-die technology





 Specifications   

Thread Size

.250-20 (1/4-20)

Thread Code

0420

Length Code

12

Min. Sheet Thickness

.040 in

Hole Size in Sheet + .005 - .000

.250 in

L - Length ± .015

View
.750 in

H ± .01

.462 in

S Max.1

.118 in

T Max.

.060 in

Max. Hole in Attached Parts

.340 in

Min. Dist. Hole C/L to Edge

.470 in

Tensile strength

120 ksi

For Use in Sheet Hardness2

HRB 96 / HB 216 or Less

Thread Specification

External, ASME B1.1, 2A / ASME B1.13M, 6g

Fastener Material

Heat-Treated Alloy Steel

Standard Finish

Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier

PennEngineering® (PEM®)
1 Threads are gageable to within 2 pitches of the "S" Max. dimension. A class 3B/5H maximum material commercial nut shall pass up to the "S" Max. dimension.
2 HRB - Hardness Rockwell "B" Scale. HB - Hardness Brinell



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