CSOS–440–5
CSS / CSOS Stainless Steel Concealed-Head Standoffs · Unified · PDF page 22 · PEM Fastener Catalogue
CSS / CSOS Stainless Steel Concealed-Head Standoffs · Unified · thread .112-40 (#4-40)
Concealed-head standoff, blind / open variant, 300 series stainless.
Also written as CSOS-440-5.
Part number breakdown
| Segment | Code | Meaning |
|---|---|---|
| Type | CSO | Concealed-head standoff, blind / open variant |
| Material | S | 300 series stainless |
| Thread | 440 | Thread size .112-40 (#4-40) |
| Length Code "L" | 5 | — |
Style #2 (2)
Screw might not pass through unthreaded end. Screws with lengths exceeding L should not be used or they may cause jacking-out of the standoff from the sheet.
Dimensions
| Dimension | Value |
|---|---|
| Thread Size | .112-40 (#4-40) |
| Type › Stainless Steel | CSOS |
| Thread Code | 440 |
| Length Code "L" +.002 −.005 (Length code is in 16ths of an inch) › .312 | 5 (2) |
| Min. Sheet Thickness | .093 |
| Blind Mounting Hole Dia. +.003 −.000 | .213 |
| Min. Depth of Blind Hole | .075 |
| Min. Depth Full Thread F | .188 |
| A (Shank) Max. | .072 |
| B Max. | .165 |
| C Max. | .212 |
| H Nom. | .250 |
| Min. Dist. Hole ℄ To Edge | .188 |
Material and finish
| Property | Value |
|---|---|
| Type | CSOS |
| Threads | Internal, ASME B1.1 2B / ASME B1.13M, 6H |
| Fastener Materials | 300 Series Stainless Steel |
| Finish | Passivated and/or tested per ASTM A380 |
| For Use In Sheet Hardness | HRB 70 / HB 125 or Less |
Source: Material and Finish Specifications · PDF page 23
Performance data
| Property | Value |
|---|---|
| Type | CSOS |
| Thread Code | 440 |
| Max. Tightening Torque Ref. (in. lbs.) | 4.75 |
| Test Sheet Material › Cold-rolled Steel › Installation (lbs.) | 4,300 |
| Test Sheet Material › Cold-rolled Steel › Pullout (lbs.) | 330 |
| Test Sheet Material › 5052-H34 Aluminum › Installation (lbs.) | 2,900 |
| Test Sheet Material › 5052-H34 Aluminum › Pullout (lbs.) | 220 |
Source: Performance Data (1) · PDF page 24
Installation tooling
| Property | Value |
|---|---|
| Type | CSS / CSOS |
| Thread Code | 440 |
| D +.003 −.000 | .170 |
| Punch Part Number | 975200048 |
| Anvil Part Number | 970200014300 |
Source: PEMSERTER® Installation Tooling · PDF page 23
End mill information
| Property | Value |
|---|---|
| Thread Code | 440, M3 |
| Fastener Type | CSOS, CSS Standoffs |
| Required Size End Mill | .213" |
| PEM Part No. | CHM-213 |
Source: End Mill Information · PDF page 23
Source
- Dimensions table: CH™ Concealed-Head Self-Clinching Studs and Standoffs › CSS™ and CSOS™ Stainless Steel Standoffs · PDF page 22
- Catalogue page: CSS™ and CSOS™ Stainless Steel Standoffs
- All CSS / CSOS Stainless Steel Concealed-Head Standoffs parts: CSS / CSOS Stainless Steel Concealed-Head Standoffs