SO-6440-18ZI

Thru-hole Threaded Standoffs – Types SO, SOA, SOS

SO-6440-18ZI

Thru-hole Threaded Standoffs – Types SO, SOA, SOS

These standoffs, which use the proven self-clinching design, install with a squeeze in properly sized round holes – and become permanently mounted in the thin sheet.

PEM® brand thru-hole threaded standoffs are installed with their heads flush with

Specifications

Thread Code
6440
Thread Size
.112-40 (#4-40), #4-40
Thread Specification
2B, ANSI B1.1, Internal
Fastener Material
Carbon Steel, Heat-Treated Carbon Steel
Standard Finish
colorless, SC1 (5µm), Type III, Zinc plated per ASTM B633, Zinc plus Clear Chromate
For Use in Sheet Hardness
HRB 80 / HB 150 or less
Length Code
18
Product Category
Thru-hole Threaded Standoffs – Types SO, SOA, SOS
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103726
Application Type
Aerospace, Automotive, Automotive Electronics, Commercial Vehicles, Datacom, Electric Vehicle Chargers, Electric Vehicles, Electronics, Industrial, Manufacturing & Sheet Metal Fabrication, Marine, Medical, Renewable Energy, Telecom
Base Panel Material
Aluminum, Steel
Brand
PEM
Fastener Characteristics
Threaded Internal
Industry
Automotive Electronics, Datacom & Telecom, Electic Vehicles, Industrial & Commercial, Medical
Installation Equipment/Method
C-Frame Automatic Feed, C-Frame Manual Feed
PEM Product Family
SO
Product Type
Standoffs
Technology Type
Self-Clinching
Unit (Metric/Unified)
Unified
B – Counter-Bore Dia. ± .005_in
.125in
C + .000 – .005_in
.212in
D ± .010_in
.187in
H Nom._in
.250in
Hole Size in Sheet + .003 – .000_in
.213in
L – Length +.002 –.005_in
.562in
Min. Dist. Hole C/L to Edge_in
.27in
Min. Sheet Thickness_in
.040in

Resources

Installation & Performance Data

so-so-sos-soa-bso-bsos-bsoa-standoffs-unified
TYPE THREAD CODE STANDOFF MATERIAL MAX. REC. TIGHTENING TORQUE FOR MATING SCREW (in. lbs.) TEST SHEET MATERIAL INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.) PULL-THRU (lbs.)
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Steel 4.75 .060" 5052-H34 Aluminum 1700 300 25 310
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Stainless Steel 3.8 .060" 5052-H34 Aluminum 1700 300 25 248
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Aluminum 2.85 .060" 5052-H34 Aluminum 1700 300 25 186
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Steel 4.75 .060" Cold-Rolled Steel 3300 420 35 380
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Stainless Steel 3.8 .060" Cold-Rolled Steel 3300 420 35 304
SO,SOS,SOA,BSO,BSOS,BSOA 6440 Aluminum 2.85 .060" Cold-Rolled Steel

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