PEM

®

 Type MSO4

™

Self-clinching microPEM

®

 Standoffs

PEM Type MSO4 self-clinching microPEM 
standoffs are used to space internal 
components and provide strong, permanent, 
and reusable load-bearing threads in metal 
sheets as thin as .016” / 0.4mm.  Smallest 
standoff size includes 2mm length with M1 
threads. Other metric and unified sizes are also 
offered.

www.pemnet.com

MSO4-912

• 

Become integral parts of an assembly by clinching 
permanently in place.

• 

Will not loosen or fall out.

• 

Can be installed into stainless steel sheets.

• 

Can be installed automatically.

• 

RoHS compliant.

Features and Benefits

NEW!

Fastener Material:

 400 series stainless steel

Threads:

 

(1)

 Unified ASME B1.1, 2B

 

(2)

 Miniature ISO 1501, 4H6

 

(3)

 Metric ASME B1.13M

Finish:

 Passivated and/or tested per ASTM A380

For Use In Sheet Hardness:

 HRB 88 / HB 176 or less 

(4)

(4)  HRB - Hardness Rockwell “B” Scale.  HB - Hardness Brinell.

UNIFIED

  

Type 

  

Min. 

Hole 

Size 

   

Min. Dist.

 

Thread 

 

Thread 

Length 

Sheet 

In Sheet 

C 

H 

L 

Hole 

C/

 Size  Stainless Steel 

Code 

Code 

Thickness* 

+.002 -.000 

Max. 

Nom. 

+.002 –.003 

To Edge

 

.060-80 

MSO4 080 3 .016  .095 .094 .125 .094 

.090

  (#0-80) 

(1)

 

   4      

.125

 

.086-56 

MSO4 256 3 .016  .125 .124 .156 .094 .120

 (#2-56) 

(1)

  

 

4      

.125

All dimensions are in inches.

All dimensions are in millimeters.

MSO 

4 – 080 –  3

PART NUMBER DESIGNATION

Type

Thread 

Code

Length 

Code

Material

Code

METRIC

  

Type 

   

Min. 

Hole 

Size 

   

Min. Dist.

 

Thread  Thread 

Length 

Sheet 

In 

Sheet C  H  L Hole 

C/

 Size  Stainless Steel 

Code 

Code 

Thickness* 

+0.05 

Max. 

Nom. 

+0.05 – 0.08 

To Edge

 

S1 

(2)

 MSO4  M1 2 0.4  2.41  2.39 3.18 2 

2.3

 

 

   3      3

 

S1.2 

(2)

 MSO4  M1.2 2  0.4  2.41  2.39 3.18 2  2.3

 

   3      3

 

S1.4 

(2)

 MSO4  M1.4 2  0.4  2.41  2.39 3.18 2  2.3

 

   3      3

 M1.6 x 0.35 

(3)

 MSO4 

M1.6 2  0.4  2.41  2.39 3.18 2  2.3

 

   3      3

  M2 x 0.4 

(3)

 MSO4 

M2 2 0.4  3.18  3.16 3.96 2  3

 

   3      3

MATERIAL AND FINISH SPECIFICATIONS

H

L

C

* For installation into thinner sheets, contact Tech Support at techsupport@pemnet.com.

(1)  The values reported are averages when all installation specifications and procedures are followed.  Variations in mounting hole 

size, sheet material and installation procedure will affect results.  Performance testing of this product in your application is 
recommended.  We will be happy to provide samples for this purpose.

(2)  Performance in torque out and pull thru will depend on the strength and type of screw being used. In most cases the failure will be in the 

screw and not in the self clinching standoff. Please contact our Applications Engineering group with any questions.

PEM

®

 Type MSO4

™

Self-clinching microPEM

®

 Standoffs

MSO4-2

PERFORMANCE DATA

(1)

UNIFIED

 

 

Max. Rec. 

                    Test Sheet Material

  Thread 

Tightening 

          .017” 300 Series Stainless Steel

 

Code 

Torque For

 

 

Mating Screw 

Installation 

Pushout 

Torque-out 

Pull-thru

 

 

(in. lbs.) 

(lbs.) 

(lbs.) 

(in. lbs.) (2) 

(lbs.) (2)

 080 

.65 

2500 

64 

3 

170

 256 

1.9 

2500 

67 

7 

265

METRIC

 

 

Max. Rec. 

                   Test Sheet Material

 

Thread 

Tightening 

         0.43mm 300 Series Stainless Steel

 

Code 

Torque For

 

 

Mating Screw 

Installation 

Pushout 

Torque-out 

Pull-thru

 

 

(N•m) 

(kN) 

(N) 

(N•m) (2) 

(N) (2)

 

M1  .019  11.1 285 0.34 755

 

M1.2  .036  11.1 285 0.34 755

 

M1.4  .057  11.1 285 0.34 755

 

M1.6  .084  11.1 285 0.34 755

 

M2  .28  11.1 300 0.79 1175

1.

  Prepare properly sized mounting 

hole in sheet.

 

Do not perform any 

secondary operations such as 
deburring.

2.

  Insert fastener through mounting 

hole (preferably the punch side) and 
into anvil as shown in drawing.

3.

  With punch and anvil surfaces 

parallel, apply only enough 
squeezing force to embed the 
standoff’s head flush in the sheet.

INSTALLATION

To be sure that you are getting 
genuine PEM

®

 brand MSO4 

standoffs, look for the “one 
groove” trademark. On actual 
parts, location of groove on 
barrel may be different than 
shown in photos.

PUNCH

ANVIL

BEFORE

AFTER

Recommended Installation Anvil

A

C

45˚

Nom.

L +.125” /

3.18mm

UNIFIED

  Thread      Anvil Dimensions (inches) 

Anvil Punch

  Code A 

C 

Part Number 

Part Number

 

080 

.112 - .114 

.097 - .099 

8015796 

975200997

 

256 

.142 - .144 

.127 - .129 

8015797 

975200997

METRIC

  Thread     Anvil Dimensions (millimeters) 

Anvil Punch

  Code A 

C 

Part Number 

Part Number

 

M1 

2.84 - 2.89 

2.46 - 2.51 

8015796 

975200997

  M1.2 

2.84 - 2.89 

2.46 - 2.51 

8015796 

975200997

  M1.4 

2.84 - 2.89 

2.46 - 2.51 

8015796 

975200997

  M1.6 

2.84 - 2.89 

2.46 - 2.51 

8015796 

975200997

 

M2 

3.6 - 3.65 

3.22 - 3.27 

8015797 

975200997

Specifications subject to change without notice. 
See our website for the most current version of this bulletin.

RoHS compliance information can be found on our website.
© 2012 PennEngineering.

Technical support e-mail: techsupport@pemnet.com

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