Product SKU: MS51957-21
Product Category: MILITARY FASTENERS
Subcategory: Military Machine Screws
Metric / Standard: Standard
Product Size: 4-40 X 1
Diameter: #4
Thread Pitch: 40
Length: 1
Drive: Phillips
Head Style: Pan
Material: 300 Series Stainless Steel
Finish: Plain
Military Specification: MS51957
National Aerospace Standards: NAS1635
In Stock: Y
