CL™ Self-Clinching Nuts
SMPS™/SMPP™ Nuts
PDF page 33 · PEM Fastener Catalogue
- Installs into sheets as thin as .025"/ 0.64 mm.
- Reduced outer dimensions and thinner sheet capabilities compared to Type S/SP thread sizes.
- SMPS nut is recommended for use in sheets HRB 70 / HB 125 or less.
- SMPP nut is recommended for use in stainless steel sheets HRB 90 / HB 192 or less.
Part Number Designation
| Part Number | Type | Thread Size Code |
|---|---|---|
| SMPS–440 | SMPS | 440 |
| SMPP–440 | SMPP | 440 |
Drawing callouts: E, C, A, T. Clinching profile may vary.
Unified — all dimensions are in inches.
| Thread Size | Type – Fastener Material | Thread Code | A (Shank) Max. | Min. Sheet Thickness | Hole Size In Sheet +.003 −.000 | C Max. | E ±.010 | T ±.010 | Min. Dist. Hole ℄ To Edge | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel | Hardened Stainless Steel | SMPS | SMPP | ||||||||
| .086-56 (#2-56) | SMPS | SMPP | 256 | .024 | .025 | .136 | .135 | .220 | .065 | .15 | .16 |
| .112-40 (#4-40) | SMPS | SMPP | 440 | .024 | .025 | .166 | .165 | .220 | .065 | .17 | .20 |
| .138-32 (#6-32) | SMPS | SMPP | 632 | .024 | .025 | .187 | .186 | .252 | .065 | .20 | .22 |
Metric — all dimensions are in millimeters.
| Thread Size x Pitch | Type – Fastener Material | Thread Code | A (Shank) Max. | Min. Sheet Thickness | Hole Size In Sheet +0.08 | C Max. | E ±0.25 | T ±0.25 | Min. Dist. Hole ℄ To Edge | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel | Hardened Stainless Steel | SMPS | SMPP | ||||||||
| M2.5 x 0.45 | SMPS | SMPP | M2.5 | 0.61 | 0.64 | 3.8 | 3.79 | 5.6 | 1.4 | 3.7 | 3.9 |
| M3 x 0.5 | SMPS | SMPP | M3 | 0.61 | 0.64 | 4.24 | 4.22 | 5.6 | 1.4 | 4.3 | 5.1 |
| M3.5 x 0.6 | SMPS | SMPP | M3.5 | 0.61 | 0.64 | 4.75 | 4.73 | 6.4 | 1.4 | 5.1 | 5.5 |