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    Thru-hole Threaded Standoffs - Types SO, SOA, SOS - Unified
    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 one surface of the mounting sheet.
        
PEM® brand thru-hole threaded standoffs are installed with their heads flush with one surface of the mounting sheet.
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    Thread Size
- .112-40 (#4-40)
- .138-32 (#6-32)
- .164-32 (#8-32)
- .190-32 (#10-32)
L - Length +.002 –.005 (in)
Fastener Material
- 300 Series Stainless Steel
- Aluminum
- Heat-Treated Carbon Steel
Standard Finish
- Passivated and/or Tested Per ASTM A380
- Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
| Item # | Thread Size | Hole Size in Sheet + .003 - .000 | C + .000 - .005 | H Nom. | L - Length +.002 –.005 | Fastener Material | Standard Finish | CAD | 
|---|---|---|---|---|---|---|---|---|
| SO-440-4ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .125 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-6ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .187 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-8ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .250 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-10ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .312 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-12ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .375 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-14ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .437 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-16ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .500 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-18ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .562 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-20ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .625 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-22ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .687 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-440-24ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .166 in | C + .000 - .005 N/A .165 in | H Nom. N/A .187 in | L - Length +.002 –.005 N/A .750 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-4ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .125 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-6ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .187 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-8ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .250 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-10ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .312 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-12ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .375 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-14ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .437 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-16ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .500 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-18ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .562 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-20ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .625 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-22ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .687 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-6440-24ZI | Thread Size N/A .112-40 (#4-40) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .750 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-632-4ZI | Thread Size N/A .138-32 (#6-32) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .125 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-632-6ZI | Thread Size N/A .138-32 (#6-32) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .187 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
| SO-632-8ZI | Thread Size N/A .138-32 (#6-32) | Hole Size in Sheet + .003 - .000 N/A .213 in | C + .000 - .005 N/A .212 in | H Nom. N/A .250 in | L - Length +.002 –.005 N/A .250 in | Fastener Material N/A Heat-Treated Carbon Steel | Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | CAD                                                    
 N/A   | 
 
                          
 
                                            
 
                                                                