Böllhoff 844.8VZD418, Zylinderschrauben (Verpackung 2000 Stk.)

Art.no.: 844.8VZD418
DIN 84 steel 4.8 zinc-plated, thick-film passivated (VZD) Cr(VI) - free metric thread
Note:
Identical to ISO 1207 DIN standard has been withdrawn
Surface (VZD):
galvanized, thick-film passivated, min. 5μm corrosion resistance to DIN EN ISO 9227*: white rust 72h, red rust 144h defined coefficient of friction μ(total) = 0.12 - 0.18 for elements with a nominal tensile strength ≥ 800 MPa
*The verification of the mentioned minimum requirements is carried out according to the test conditions of DIN EN ISO 4042, galvanic coatings for fasteners. For dimensions < M5, the above values may deviate downwards.
Dimension: M4 x 18

a max.: 1.4
Diameter (d): M4
dk max.: 7
dk min.: 6.78
ECLASS 7.1: 23110102
k max.: 2.6
k min.: 2.46
Length (l): 18
l max. A: 18.35
l min. A: 17.65
Material: Steel 4.8
n: 1.2
n max.: 1.51
n min.: 1.26
DIN/ISO: DIN 84
Surface: zinc-plated, thick-film passivated (VZD)
Pitch (P): 0.7
r min.: 0.2
t min.: 1.1
Packaging unit (pcs.): 2000
Material version: 4.8
Cr(VI) Note: Cr(VI)-free
Flange/washer: without flange
Risk hydrogen embrittlement:
Thread type: Metric thread
Head shape: Cylinder head
Force application: Slotted
Installation method: Screw into place with tool
Product type: Cap screw with internal driving feature
Product group: Screws
RoHS conformal:
Material: Steel