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Black alloy steel M3 x 20mm hex socket grub screws, 50 pieces

Unique-Bargains

Unique-Bargains M3 x 20mm Alloy Steel Hex Socket Grub Screws 50pcs

SKU CH-VAN6-14TCE

Pack of 50 black alloy-steel M3 grub screws, 20 mm long with 0.5 mm pitch and 1.5 mm hex drive, grade 12.9

  • TypeGadgets
  • Alloy steel grade 12.9 resists stripping under high torque
  • Headless cup point seats flush for clean mechanical fits
  • 5 mm hex drive works with standard Allen keys
  • 50-piece pack covers multiple assembly or repair jobs

M3 x 20mm alloy steel grub screws

This pack supplies 50 headless set screws machined from alloy steel with a cup point and a 1.5mm hex socket. The M3 thread uses a 0.5mm pitch and the overall length is 20mm. They are graded 12.9 for high tensile strength and come in a black finish. The hardware suits assembly tasks in electronics, equipment and machinery where a flush, low-profile fastener is required.

50-piece bulk pack for production use

The quantity covers small-batch builds or maintenance stocks without needing multiple small boxes. A tolerance of ±2% means the actual count may vary slightly around the nominal 50 pieces. No batteries or additional components are included, so the pack delivers only the fasteners themselves. Buyers who need a different thread size, length or drive type will have to source a separate kit.

Highlights

  • Alloy steel grade 12.9 resists stripping under high torque
  • Headless cup point seats flush for clean mechanical fits
  • 5 mm hex drive works with standard Allen keys
  • 50-piece pack covers multiple assembly or repair jobs

Specifications

BrandUnique Bargains
TypeGadgets

Questions about this item

Do the M3 x 20mm grub screws need periodic replacement under normal use?

Alloy steel grade 12.9 resists wear, so the screws typically last the life of the assembly unless they are over-torqued or corroded.

What is the first limit reached when the screws are under sustained load?

The 12.9 tensile grade sets the yield point; exceeding it causes permanent stretch before the threads or hex socket fail.

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