Cross-Recessed Countersunk Head Machine Screw
Caution
- Please note that if the mating part is to be prepared by the customer, it will not fit unless it is over-tapped according to the standard.
- Since hot-dip galvanizing results in a very thick coating, please select a product with the same surface treatment for the mating component.
- There are some differences from the specifications table. We thank you for your understanding.
- The product images are representative only. Specifications may vary by part number, including shape and color.
*"Other special treatment" under "Surface treatment" refers to the following specifications.
3W-ZEC: ZEC coat - trivalent white undercoat
3B-ZEC: ZEC coat - trivalent black undercoat
AEN: ZEC Coating - Zinc Plating Base
Product Description
[Basic Shape] Standard (round)
[Mounting Hole Shape] Cross-recessed
[Material] SWCH equivalent / brass / SUS304 equivalent / aluminum / titanium / SUS316L / SUS430 / steel / stainless steel
[Surface Treatment] Non-chrome (zinc plating) black / Non-chrome white / Non-chrome black / Trivalent black / Trivalent white / bright chromate plating / hot-dip galvanizing / chromate plating / green chromate / black chrome / nickel plating / copper plating / black nickel / chrome plating / parkerizing / dacrotized / trivalent stainless coat / stainless steel finish plating / dark bronze color plating / brass plating / tin cobalt / painted head (matte black) / painted head (black) / black coating / bright chromate plating + painted head (white) / trivalent white + painted head (white) / painted head (white) / temper color / temper color (dark) / other special treatment / anti-loosening agent applied / anti-seizure coating / 8 micron trivalent white / Geomet treatment / black chromate / None
[Thread Nominal (M)] 2/2.3/2.5/2.6/3/3.5/4/4.5/5/6/8/10/12/16
[Length L (mm)] 3–250
[Detailed Shape] Flat head
[Tip Shape] Flat tip
[Thread Type] Metric coarse thread
[Pitch (mm)]0.4/0.45/0.5/0.6/0.7/0.75/0.8/1.0/1.25/1.5/1.75/2.0
[Thread Type] Fully-threaded
Drawing
Specifications Table
| Nominal thread size | Pitch | Cross-recessed Number | dk | k | C | m | q (Cross-Recessed penetration depth) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Reference dimension | Tolerance | Reference dimension | Tolerance | Approx. | Reference | Maximum | Minimum | |||
| M2 | 0.4 | 1 | 4 | 0 -0.4 | 1.2 | 0 -0.2 | 0.2 | 2.2 | 1.01 | 0.65 |
| M2.3 | 0.4 | 4.6 | 1.35 | 0.2 | 2.4 | 1.21 | 0.85 | |||
| M2.5 | 0.45 | 5 | 1.45 | 0.2 | 2.6 | 1.42 | 1.05 | |||
| M2.6 | 0.45 | 5.2 | 1.5 | 0.2 | 2.6 | 1.42 | 1.05 | |||
| M3 | 0.5 | 2 | 6 | 0 -0.5 | 1.75 | 0 -0.3 | 0.25 | 3.6 | 1.43 | 0.91 |
| M3.5 | 0.6 | 7 | 2 | 0.25 | 4.1 | 1.93 | 1.40 | |||
| M4 | 0.7 | 8 | 2.3 | 0.3 | 4.5 | 2.33 | 1.79 | |||
| M5 | 0.8 | 10 | 0 -0.6 | 2.8 | 0.3 | 5.1 | 2.93 | 2.38 | ||
| M6 | 1.0 | 3 | 12 | 0 -0.7 | 3.4 | 0 -0.4 | 0.4 | 6.7 | 3.26 | 2.70 |
| M8 | 1.25 | 16 | 0 -0.8 | 4.4 | 0.4 | 8.4 | 4.96 | 4.36 | ||
| M10 | 1.5 | 4 | 20 | 0 -1.3 | 5.7 | 0 -0.5 | 0.7 | 10 | 5.95 | 5.15 |
| M12 | 1.75 | 24 | 6.7 | 0.5 | 10 | 6.25 | 5.25 | |||