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Partial Thread Screw is a customized machine fastener designed with smooth full shank on upper part and precise machine thread on the tail, widely adopted across multiple industrial fastening fields. Unlike full thread machine screws, the unthreaded shaft of Partial Thread Screw avoids scratching through holes and effectively prevents plastic cracking during tight installation. Manufacturers select our half thread fasteners for reliable fixed connection of metal and composite components.
| Item | Available Options |
|---|---|
| Raw Material | Carbon Steel, Stainless Steel 304, Stainless Steel 316 |
| Surface Finish | Electro Galvanized, Hot-dip Galvanized, Black Oxide, Passivation |
| Head Styles | Cross recess, Hex socket, Pan head, Round head |
All specifications of Partial Thread Screw can be tailored as clients’ engineering drawings and bulk order demands.
Partial Thread Screw fixes plastic shell and internal metal brackets, smooth shank protects thin plastic housing from splitting during locking.
Our Partial Thread Screw penetrates thick steel plate through-hole and locks into tapped base hole for stable rack splicing.
High shear shank of Partial Thread Screw secures jig spare parts for mechanical processing production lines.
We provide free sample service of Partial Thread Screw for pre-order testing, technical team offers professional parameter selection suggestion according to clients’ application environment. Global clients can submit inquiry form on page for customized quotation, bulk order discount and technical data sheet.
A partial thread screw features a smooth, unthreaded shank below the head with threads only on the lower segment. This design provides higher shear strength and prevents damage to through-holes or plastic cracking, whereas a full thread screw has threads running the entire length.
The unthreaded portion passes smoothly through the mating clearance hole without cutting or exerting radial friction on the inner wall, eliminating localized stress concentrations and brittle splitting in delicate plastic housings.
Yes, we provide flexible customization options for shank length, thread pitch, diameter, head styles (such as pan, hex, or flat), and specialized surface treatments to meet precise engineering drawings.
For high-corrosion applications, Stainless Steel 304 or 316 with passivation is recommended. Carbon steel variants with hot-dip galvanized or specialized anti-rust coatings are also suitable for cost-effective heavy-duty use.
Yes, we offer free sample evaluation services for prospective buyers to verify dimensional precision, fit, and mechanical properties before confirming mass production runs.
