Industrial Fastener · Screws Series
Set Screw
Set screws (also called grub screws) are headless threaded fasteners with a hex-key (or slotted) drive in one end and a working point in the other. They are used to lock collars to shafts, secure pulleys, or apply pressure within an assembly. The point shape (flat, cone, cup, dog) determines the...
Product Overview
Set Screw from HDBOLT
Set screws (also called grub screws) are headless threaded fasteners with a hex-key (or slotted) drive in one end and a working point in the other. They are used to lock collars to shafts, secure pulleys, or apply pressure within an assembly. The point shape (flat, cone, cup, dog) determines the holding mechanism.
Supplied by HDBOLT in Yongnian, China. Our production capacity and extensive fastener stock support repeat orders and mixed-product shipments. Contact us to confirm availability for your size, grade and finish.
Project or drawing specification
Carbon steel hardened, Stainless 304/316
Set screws (also called grub screws) are headless threaded fasteners with a hex-key (or slotted) drive in one end and a working point in the...
Inspection records, lot labels, certificate options, and destination-ready packing.
Technical Data
Specification range
Final dimensions, mechanical properties, finish, and packing are confirmed against the RFQ and applicable standard.
| Point Standards | DIN 913 (flat), DIN 914 (cone), DIN 915 (dog), DIN 916 (cup) |
|---|---|
| Drive | Hex socket (most common), Slotted, Square |
| Property Class | 45H (hardened) standard |
| Diameter | M3 – M20 |
| Material | Carbon steel hardened, Stainless 304/316 |
| Surface Finish | Black oxide, Plain, Stainless |
Common surface finishes
Select an option to review its finish details. Exact coating system, thickness, and corrosion requirement are confirmed with the order.
Quality Control
Quality Checks from Order to Shipment
Each order is matched to the specified standard and verified at practical control points before shipment.
RFQ confirmation
Standard, size, grade, pitch, finish, certificates, packing, and destination are locked before production.
Lot verification
Critical dimensions, thread fit, markings, finish appearance, and packing labels are sampled and recorded.
Shipment approval
Photos and required reports are prepared before packing, loading and export delivery.
Buyer Questions
Frequently asked questions
Which set screw point should I use?
Cup point (DIN 916) is the most common general-purpose — it grips a flat shaft surface and resists rotation. Flat point (DIN 913) is for soft shafts where you don't want to mar the surface, used with a flat machined on the shaft. Cone point (DIN 914) gives the highest holding power but permanently marks the shaft. Dog point (DIN 915) engages a hole in the shaft for positive non-rotational locking.
Ready to quote Set Screw?
Send the standard, size, grade, finish, quantity, packing requirement, and destination. Availability and lead time are confirmed with the inquiry.