LA4-440-1MD
Floating self-clinching, locking thread fasteners LA4, LAC, LAS - Unified
These fasteners are designed for secure assembly with both locking and non-locking threads, offering up to .030” adjustment for hole misalignment in thin sheets. Featuring a self-clinching mechanism for easy installation using a standard press, they provide reliable load-bearing support. The unique PEM feature ensures extra strength, with the floating nut's threads fully extending into the retainer shank. Made of 400 Series Stainless Steel, they are suitable for sheets as thin as .038” with hardness up to HRB 88. The self-locking version meets NASM25027 specifications for thread locking torque performance. Corresponding to US NASM45938/11 standards, these fasteners guarantee quality and compliance for aerospace and military applications. For a complete reference guide, visit our website.
| Product Category: | |
| Manufacturer: | Penn Engineering |
| Manufacturer Part Number: | Penn Engineering LA4-440-1MD |
| Thread Size: | 4-40 |
| Material: | 400 Series Stainless Steel |
| Thread Type: | Self-Locking |
| Retainer Material: | Stainless Steel |
| Nut Material: | Stainless Steel |
| Animation: | View Animation |
| SKU: | PEMLA4-440-1MD |
| Float: | .015” minimum, in all directions from center, .030” total |
| For Use in Sheet Hardness: | HRB 88 / HB 183 or Less |
| Min. Sheet Thickness: | .038 in |
| Nut Finish: | Black Dry-film Lubricant |
| Retainer Finish: | Passivated and/or tested per ASTM A380 |
| Shank Code: | 1 |
| Thread Code: | 440 |
| A (Shank) Max.: | .038 in |
| C Max.: | .289 in |
| D Max.: | .290 in |
| E ± .015: | .360 in |
| Hole Size in Sheet + .003 - .000: | .290 in |
| Min. Dist. Hole C/L to Edge: | .300 in |
| T2 Max.: | .190 in |
Environmental Initiative Details
| Environmental Initiative: | RoHS |
|---|---|
| Compliant: | Unknown |
| Date of this Information: | Unknown |
| Notes: |
