A4-440-1
Floating Self-Clinching Fasteners A4, AS, AC - Unified
These fasteners feature both locking and non-locking threads, offering convenient adjustment for mating hole misalignment up to .030". Designed for easy assembly, they are self-clinching and can be pressed into prepared holes. The floating nut design provides extra strength and support, with threads extending fully 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. Meeting NASM25027 specifications, the self-locking version ensures secure thread locking torque performance. Corresponding to US NASM45938/11 standards, these fasteners are a reliable choice for various applications in aerospace and military sectors. For more details, refer to our complete Military Specification and National Aerospace Standards Reference Guide.
| Product Category: | |
| Manufacturer: | Penn Engineering |
| Manufacturer Part Number: | Penn Engineering A4-440-1 |
| Thread Size: | 4-40 |
| Material: | 400 Series Stainless Steel |
| Thread Type: | Non-Locking |
| Retainer Material: | Stainless Steel |
| Nut Material: | Stainless Steel |
| Animation: | View Animation |
| SKU: | PEMA4-440-1 |
| 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 |
| Shank Code: | 1 |
| Standard Finish - Retainer & Nut: | Passivated and/or tested per ASTM A380 |
| 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 |
| T1 Max.: | .130 in |
Environmental Initiative Details
| Environmental Initiative: | RoHS |
|---|---|
| Compliant: | Unknown |
| Date of this Information: | Unknown |
| Notes: |
