SP–0420–1
S / SS / CLS / CLSS / SP Self-Clinching Nuts · Unified · PDF page 28 · PEM Fastener Catalogue
S / SS / CLS / CLSS / SP Self-Clinching Nuts · Unified · thread .250-20 (1/4-20)
Age-hardened A286 stainless, Passivated and/or tested per ASTM A380.
Also written as SP-0420-1.
Part number breakdown
| Segment | Code | Meaning |
|---|---|---|
| Type | SP | Age-hardened A286 stainless |
| Thread | 0420 | Thread size .250-20 (1/4-20) |
| Shank | 1 | — |
Dimensions
| Dimension | Value |
|---|---|
| Thread Size | .250-20 (1/4-20) |
| Type (Fastener Material) › Hardened Stainless Steel | SP |
| Thread Code | 0420 |
| Shank Code | 1 |
| A (Shank) Max. | .054 |
| Rec. Min. Sheet Thickness | .056 |
| Hole Size In Sheet +.003 −.000 | .344 |
| C Max. | .343 |
| E ±.010 | .440 |
| T ±.010 | .170 |
| Min. Dist. Hole ℄ To Edge | .34 |
Material and finish
| Property | Value |
|---|---|
| Type | SP |
| Threads | Internal ASME B1.1 2B/ASME B1.13M, 6H |
| Fastener Materials | Age Hardened A286 Stainless Steel |
| Standard Finishes | Passivated and/or Tested per ASTM A380 |
| For use in Sheet Hardness | HRB 90/ HB 192 or less |
Source: Material and Finish Specifications · PDF page 33
Performance data
| Property | Value |
|---|---|
| Type | SP |
| Thread Code | 0420 |
| Shank Code | 1 |
| Test Sheet Material | 304 Stainless Steel |
| Installation (lbs.) | 13500 |
| Pushout (lbs.) | 450 |
| Torque-out (in. lbs.) | 150 |
Source: SP™ Nuts · PDF page 38
Installation tooling
| Property | Value |
|---|---|
| Thread Code | 0420 |
| Anvil Dimensions (in.) › A ±.002 | .443 |
| Anvil Dimensions (in.) › P +.000 –.001 | .163 |
| Anvil Dimensions (in.) › R Max. | .010 |
| Anvil Dimensions (in.) › R1 +.005 | .005 |
| Anvil Part Number | 8012825 |
| Punch Part Number | 8003076 |
Source: SP™ Nuts · PDF page 35
Source
- Dimensions table: CL™ Self-Clinching Nuts › S™/SS™/CLS™/CLSS™/SP™ Nuts › Part Number Designation · PDF page 28
- Catalogue page: Part Number Designation
- All S / SS / CLS / CLSS / SP Self-Clinching Nuts parts: S / SS / CLS / CLSS / SP Self-Clinching Nuts