Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	316L Stainless Steel
Head Style	Headless (Grub Screw)
Point Type	Cone Point
Drive Type	Socket (Allen/Hex)
Thread Size Options	M3, M4
Finish	Polished
Corrosion Resistance	High (Marine Grade)
Hardness	Standard Industrial Grade
Application	Securing collars, gears, and pulleys to shafts
Package Quantity	100 Pieces per Pack

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Reliable industrial standard

We use these in our manufacturing line for securing sensors. They hold up well under vibration and the headless design allows for a flush mount which is critical for our assembly.

Anonymous

Mar 20, 2026

Rating: 5/5

Exactly as described

Fast shipping and the product matches the description perfectly. The stainless steel has a nice finish and no burrs on the threads. Will buy again.

Anonymous

Mar 17, 2026

Rating: 5/5

Great value for money

Bought a pack of M3 screws for a DIY robotics project. The quality feels premium compared to cheaper zinc-plated options I've used before. Highly recommend for serious hobbyists.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for marine applications

Needed these for a boat repair project. The 316L steel is exactly what I needed to prevent rust in saltwater environments. The cone point grips the shaft securely without slipping.

Anonymous

Mar 04, 2026

Rating: 4/5

Solid grip

The cone point digs in nicely to the shaft. Make sure you torque them correctly so you don't strip the socket. Overall very satisfied with the purchase.

Anonymous

Mar 01, 2026

Rating: 4/5

Good quality, precise threads

Threads are cut very cleanly and fit perfectly into M4 tapped holes. Took off one star only because the package didn't include an Allen key, but the screws themselves are excellent.

5 FAQ

Q: Can these be used on aluminum shafts without galling?

A: While 316L stainless steel reduces the risk, galling can still occur when mating similar metals or hard steel against soft aluminum under high torque. We suggest using an anti-seize compound for best results.

Q: What size Allen key do I need for the M4 version?

A: For the M4 socket head grub screws, you will typically need a 2.0mm or 2.5mm Allen key depending on the specific tolerance standards used. We recommend checking the product manual included in the pack.

Q: Are these screws suitable for outdoor use in rainy conditions?

A: Yes, being made of 316L stainless steel, these screws offer excellent corrosion resistance and are highly suitable for outdoor and wet environments.

Q: Is the cone point hardened?

A: The screws are manufactured to standard industrial hardness specifications suitable for general fastening applications. They are not case-hardened specifically for extreme wear scenarios.

Q: Do you sell these in bulk quantities over 1000 units?

A: Yes, we offer bulk pricing for orders exceeding 1000 units. Please contact our sales department directly through the 'Contact Seller' button for a custom quote.

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