4-40 X 1 (MS51957-21) Military Machine Screw MS51957 / Phillips / Pan Head / 18-8 Stainless / DFAR-Compliant
Tested & Certified to Military Standards.
| Fastener SuperStore, Inc. | |
|---|---|
| Product Category | Screws |
| Product Number | 439569 |
| Product Name | Mil-Spec Machine Screw |
| Screw Type | Machine Screw |
| Head Type | Pan Head |
| Standard Drives | Philips / Frearson |
| Material | Stainless Steel |
