We specialize in very small micro setscrews (miniature set screws) from M1 to M2.5.
  Nominal diameters of our small micro Hexagon socket Set Screws with Knurled Cup Point are M3, M4 and M5, Lengths are 3mm, 4mm, 5mm, 6mm, 8mm, 10mm and 12mm. Pointed tip shapes are 'cup point', 'flat point', 'cone point', 'cup & cone point (W Point)', 'knurled cup point'.   SAIDA Manufacturing Co. Ltd.
292 Shimoyotsugi Akiruno-city Tokyo JAPAN
(FAX No.)+81 42-559-0138
Back to the former page
Size Table of Hexagon socket Set Screw with Knurled Cup Point
Name :
  Hexagon socket Set Screw with Knurled Cup Point
  (Hex socket Set Screw with Knurled Cup Point)
Hardness : HRC50~53
Material : Nickel Chrome Molybdenum Steel (SNCM240)
Knurled Cup Point photo Hexagon socket figure
MOQ/SPQ ; 1,000/1,000 pcs
MOQ(Minimam Order Quantity)  SPQ(Standard Packing Quantity)
Nominal Dia. 
Opposite side distance
of hexagon socket  
0.9 1.3 1.3 1.5 2.0 2.5
length  tolerance A detailed drawing is displayed when you click a size in this table.
A size M3x4 is the nominal diameter M3, and length is 4.0mm.
3.0 ±0.20
There is not this sizes
(M2, M2.5, M2.6)
of Knurled Cup Point.
4.0 ±0.24
M3x4 M4x4
5.0 ±0.24
M3x5 M4x5 M5x5
6.0 ±0.24
M3x6 M4x6 M5x6
8.0 ±0.29
M3x8 M4x8 M5x8
10.0 ±0.29
M3x10 M4x10 M5x10
12.0 ±0.35
M3x12 M4x12 M5x12

Top of this page
 Generally, small diameter of the hexagon socket set screws, if it is tightened strongly in the hexagonal bar spanner, hexagonal hole is cracked.

 Our hexagon socket set screws is using the Nickel-Chrome-Molybdenum Steel (SNCM240) to the material. And furthermore, the precision of the hexagonal hole is good.
 In addition, the hardness by the heat treatment is high (HRC50 ~ 53), there is also toughness. Therefore, the hexagonal hole is not broken even if you tighten it until you can wrench off a hexagonal bar spanner.

 At that time, when you move the magnet to the hexagonal hole, because it does not have a hexagonal hole deformed, broken hexagonal bar spanner is attracted to the magnet, it will be drawn from the hexagonal hole.

broken test

 Our hexagon socket set screw dries surface rust prevention oil with a vacuum hot-air drier after black oxide finish (surface treatment).