CFHA–440–4
CH Concealed-Head Self-Clinching Studs · Unified · PDF page 21 · PEM Fastener Catalogue
CH Concealed-Head Self-Clinching Studs · Unified · thread .112-40 (#4-40)
Concealed-head flush stud, Aluminium.
Also written as CFHA-440-4.
Part number breakdown
| Segment | Code | Meaning |
|---|---|---|
| Type | CFH | Concealed-head flush stud |
| Material | A | Aluminium |
| Thread | 440 | Thread size .112-40 (#4-40) |
| Length Code "L" | 4 | — |
Dimensions
| Dimension | Value |
|---|---|
| Thread Size | .112-40 (#4-40) |
| Type › Aluminum | CFHA |
| Thread Code | 440 |
| Length Code "L" ±.015 (Length code is in 16ths of an inch) › .250 | 4 |
| Min. Sheet Thickness | .093 |
| Blind Mounting Hole Dia. +.003 −.000 | .172 |
| Min. Depth of Blind Hole | .075 |
| A (Shank) Max. | .071 |
| E ±.010 | .205 |
| C Max. | .171 |
| Min. Dist. Hole ℄ To Edge | .156 |
| Max. Hole In Attached Parts | .135 |
Material and finish
| Property | Value |
|---|---|
| Type | CFHA |
| Threads | External, ASME B1.1 2A / ASME B1.13M, 6g |
| Fastener Materials | Aluminum |
| Finish | No Finish |
| For Use In Sheet Hardness | HRB 50 / HB 89 or Less |
Source: Material and Finish Specifications · PDF page 23
Performance data
| Property | Value |
|---|---|
| Type | CFHA |
| Thread Code | 440 |
| Max. Tightening Torque Ref. (in. lbs.) | 2.85 |
| Test Sheet Material › Cold-rolled Steel › Installation (lbs.) | (2) |
| Test Sheet Material › Cold-rolled Steel › Pullout (lbs.) | (2) |
| Test Sheet Material › 5052-H34 Aluminum › Installation (lbs.) | 1,500 |
| Test Sheet Material › 5052-H34 Aluminum › Pullout (lbs.) | 190 |
Source: Performance Data (1) · PDF page 24
Installation tooling
| Property | Value |
|---|---|
| Type | CHA / CHC / CFHA / CFHC |
| Thread Code | 440 |
| D +.003 −.000 | .127 |
| Punch Part Number | 975200048 |
| Anvil Part Number | 970200006300 |
Source: PEMSERTER® Installation Tooling · PDF page 23
End mill information
| Property | Value |
|---|---|
| Thread Code | 440, M3 |
| Fastener Type | CFHC, CHC, CFHA, CHA Studs |
| Required Size End Mill | .172" |
| PEM Part No. | CHM-172 |
Source: End Mill Information · PDF page 23
Related drawings
Source
- Dimensions table: CH™ Concealed-Head Self-Clinching Studs and Standoffs › CHA™, CFHA™, CHC™ and CFHC™ Aluminum and Stainless Steel Studs · PDF page 21
- Catalogue page: CHA™, CFHA™, CHC™ and CFHC™ Aluminum and Stainless Steel Studs
- All CH Concealed-Head Self-Clinching Studs parts: CH Concealed-Head Self-Clinching Studs