Fan Favorite 4-40 X 3/8″ Jackscrews Steel Zinc Yellow (1500 / Pkg.)

[1500 BULK] Jackscrews Steel Zinc Yellow 4/40 X 3/8 are a bulk-pack fastener designed for precise adjustment and secure fastening in a variety of applications.

Crafted from durable steel and finished with a Zinc Yellow coating, these jackscrews resist corrosion while providing smooth, dependable operation in both soft and hard substrates.

Material: Steel for high strength and long life

Finish: Zinc Yellow for corrosion resistance and a bright, visible finish

Size: 4-40 thread, 3/8 inch length

Type: Jackscrews for fine adjustment and alignment

Packaging: Bulk pack (1500 pieces) for economical procurement

Whether you’re outfitting a workshop, hardware store inventory, or a manufacturing line, these bulk jackscrews offer consistent performance and value.