Part # BS-0420-1, Self-Clinching Blind Fasteners - Types B, BS

PEM® brand self-clinching blind fasteners provide permanently mounted blind threads in metal sheets as thin as .040”.

Provides barrier to protect threads against foreign matter.
Protects internal components from intrusion of screws.

PEM blind fasteners employ the proven PEM self-clinching design and are easily installed in properly sized holes. Shanks of PEM fasteners act as their own pilots. PEM blind fasteners can be installed with any standard press applying squeezing forces between parallel surfaces.

PEM self-clinching blind fasteners are available in thread sizes from #4-40 through 1/4-20 in carbon or stainless steel.

Unit of Measure

Specifications

Thread Size	N/A .250-20 (1/4-20)
Thread Code	N/A 0420
Shank Code¹	N/A 1
A (Shank) Max.	N/A .054 in
Min. Sheet Thickness	N/A .056 in
Hole Size in Sheet + .003 - .000	N/A .344 in
B Max.	N/A .305 in
C Max.	N/A .343 in
E ± .010	N/A .430 in
F Min.	N/A .310 in
L Max.²	N/A .500 in
T ± .010	N/A .560 in
Min. Dist. Hole C/L to Edge³	N/A .34 in
For Use in Sheet Hardness⁴	N/A HRB 70 / HB 125 or Less
Thread Specification	N/A Internal, ANSI B1.1, 2B
Fastener Material	N/A 300 Series Stainless Steel
Standard Finish	N/A Passivated and/or tested per ASTM A380
CAD Supplier	N/A PennEngineering® (PEM®)
Inventory	N/A {0}

¹ Other shank and screw lengths available.
² The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”
³ To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
⁴ HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.

Specifications

Thread Size

Thread Code

A (Shank) Max.

Min. Sheet Thickness

Hole Size in Sheet + .003 - .000

B Max.

C Max.

E ± .010

F Min.

T ± .010

Thread Specification

Fastener Material

Standard Finish

CAD Supplier

Inventory