A: It depends.If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don’t have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
Set Screw
Set Screws (Grub Screws): Overview
Material:
- Common materials: Carbon steel (Grade 8.8, 12.9), stainless steel (304/316), or alloy steel.
- Surface treatments: Black oxide, zinc/nickel plating, or phosphating for corrosion resistance and reduced friction.
Manufacturing Process:
- Cold Heading: Forms the screw head and blank shank from wire stock.
- Thread Rolling: Creates precise threads using dies to ensure dimensional accuracy.
- Point Machining: Shapes the tip (cup, flat, cone, or dog point) via CNC or grinding.
- Heat Treatment: Quenching and tempering to achieve high surface hardness (HRC 45+ for Grade 12.9).
- Surface Finishing: Applies coatings for corrosion protection and smooth installation.
Key Production Considerations:
- Tip geometry: Critical for grip strength and surface damage prevention.
- Thread consistency: Ensures uniform engagement with mating components.
- Hardness control: Balances strength and brittleness post-heat treatment.
- Coating uniformity: Avoids buildup on the tip to maintain functionality.
Applications:
- Shaft collars: Secures bearings, pulleys, and gears onto rotating shafts.
- Couplings: Locks motor shafts to mechanical drives.
- 3D printers: Fixes belts, gears, and linear motion components.
- Automotive: Adjusts throttle linkages, brake systems, and transmission parts.
- Electronics: Holds components in enclosures or heat sinks.
Installation:
- Tool selection: Use hex keys (Allen wrenches) or slot drivers matching the screw drive type.
- Alignment: Ensure the screw tip contacts the shaft flat or dimple to prevent slippage.
- Torque control: Apply manufacturer-specified torque to avoid thread stripping or tip deformation.
- Lubrication: Optional for high-torque applications to reduce friction.
- Inspection: Verify no radial movement post-installation; re-torque if vibration occurs.
Frequently Asked Questions
A: Normally, we make a 30% deposit after Pl confirmation and a 70% balance before shipment. lf order amountis too small, we can also change to 100% deposit in order to save bank handling charge.
A: A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.
A: We are not only a trading company but also a manufacturer. Our factory mainly focuses on mold design and quality inspection. Our bulk production may come from the factories we have worked with for a long time, and they are all ISO9001 certified. Through this cooperation model, we can not only ensure product quality and service, but also satisfy the diversified product needs of customers, and the price is more advantageous.
A: Yes,we are very glad to offer you samples.
However the express courier cost from our company to your required address will be upon your account.
Usually we use DHL, UPS, FEDEX or EMS as the courier.
It will take 3-7 days to arrive many Europe countries and North America.
Which express courier we will use, it’s up to your convenient or the express charge.
A: No,just part of our capable categories have been showed in our site.
If you are looking for relative industrial products, please feel free to contact us.
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