SMPP-256

Nuts for Ultra-Thin Sheets – Type SMPP

SMPP-256

Nuts for Ultra-Thin Sheets – Type SMPP

Type SMPP self-clinching nuts are for installation into ultra-thin sheets.

  • Installs into stainless steel sheets as thin as .025”.
  • Corrosion resistance similar to 300 series stainless steel.
  • Reduced outer dimensions and thinner sheet capabilities compared to type SP thread sizes.
  • Recommended for use in stainless steel sheets HRB 90 / HB 192 or less.

Specifications

Thread Code
256
Thread Size
.086-56 (#2-56), #2-56
Thread Specification
2B, ASME B1.1, Internal
Fastener Material
Age Hardened A286 Stainless Steel 
Standard Finish
Passivated and/or tested, Passivated and/or tested per ASTM A380
For Use in Sheet Hardness
HRB 90 / HB 192 or Less
Product Category
Nuts for Ultra-Thin Sheets – Type SMPS, SMPP
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103686
Application Type
Automotive, Automotive Electronics, Datacom, Electric Vehicle Chargers, Electric Vehicles, Industrial, Telecom
Base Panel Material
Aluminum, Stainless Steel, Steel
Brand
PEM
Fastener Characteristics
Close To Edge, Threaded Internal
Industry
Automotive Electronics, Datacom & Telecom, Industrial & Commercial, Medical
Installation Equipment/Method
C-Frame Automatic Feed, C-Frame Manual Feed, In-Die
PEM Product Family
CL, SS
Product Type
Nuts
Technology Type
Self-Clinching
Unit (Metric/Unified)
Unified
A Shank Max
.024in, 0.024in
E ± .010_in
.220in
Hole Size in Sheet + .003 – .000_in
.136in
Min. Dist. Hole C/L to Edge_in
.160in
Min. Sheet Thickness_in
.025in
C Max._in
.135in
T ± .010_in
.065in

Resources

Installation & Performance Data

cl-smpp-nuts-unified
TYPE THREAD CODE TEST SHEET MATERIAL (in.) INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.)
SMPP 256 .029" 304 Stainless Steel HRB 89 4500 50 10
ss-smpp-nuts-unified
TYPE THREAD CODE MAX. NUT TIGHTENING TORQUE (in. lbs.) TEST SHEET MATERIAL SHEET HARDNESS HRB INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.) TENSILE STRENGTH (lbs.) TEST BUSHING HOLE SIZE PULL THRU SIZE TESTS (in.)
SMPP 256 7.5 .029" 304 Stainless Steel 89 4500 50 10 640 0.104

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