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IV8

Screw Insert - Type 8 short: flat-bottom thread, 3 cutting holes, thin wall

Post-molding installation
High tear resistance
Self tapping
3 cutting holes
Thin Wall

  • Post-molding installation
  • High tear resistance
  • Self tapping
  • 3 cutting holes
  • Thin Wall

Fasteners Engineering
Large Series – E-Shop

Div 5
Div 3
Div 6
Div 4
Div 1
Div 2
Image technique 1
Image technique 2
Part Number Thread M (6H) L (mm) Ø E Well Ø plastics Well Ø light alloysTechnical sheet 3D
IV 8 035 050 M050 A 0M3.5 X 0.6055 X 0.604.6 à 4.74.7 à 4.8
 
IV 8 040 060 M060 A 0M4 x 0.7066 x 0.705.4 à 5.65.6 à 5.7
 
IV 8 050 070 M065 A 0M5 X 0.8076.5 X 0.806.0 à 6.16.1 à 6.2
 
IV 8 060 080 M080 A 0M6 x 1.0088 x 1.007.4 à 7.67.6 à 7.7
 
IV 8 080 090 M100 A 0M8 X 1.25910 X 1.259.3 à 9.59.5 à 9.6
 
IV 8 100 100 M120 A 0M10 x 1.501012 x 1.5011.1 à 11.311.3 à 11.5
 
IV 8 120 120 M140 A 0M12 X 0.751214 X 1.7513.1 à 13.313.3 à 13.5
 
IV 8 140 140 M160 A 0M14 x 2.001416 x 2.0015.0 à 15.215.2 à 15.4
 
IV 8 160 140 M180 A 0M16 X 2.001418X 2.0017.0 à 17.2-
 

Phase
01

The tool positions the insert along its axis in the moulded well or drilling hole. self-drilling: the material is forced back without making chips self-tapping: the cutting slot cuts the material.

Phase
02

The locknut or the tool mechanism separates the tool and the insert. The material compresses the insert, holding it securely.

Chip tray

Lb Well depth:
To recover the chips produced during installation 
Insert length +2 à 3 mm

Open Well

The insert must be fully buried in the material:
Insert length +1 mm

Commodily plastics

60° chamber
Pc = 1 to 1.5 x ext. thread pitch

Technical plastics

& High-performances plastics & Light allows

ØL =Ø ext + 0.2 to 0.4 mm
PL =1 à 1.5 x ext. thread pitch
Pc =1 à 1.5 x ext. thread pitch

Torque & speed for tempered steel
type 2 screw insert

ØP / Well diameter

A larger hole will make it easier to fit the insert but at the expense of the holding force and torque resistance.
Plan a counterbore and/or a chamber to fit the insert more easily an ensure that it is flush with the surface of the material.

S / Wall sickness

Depends on the material elasticity and the stress on the assembly

Commodity plastics:
S ≥ 0.25 to 0.9 insert outer Ø

Technical & high performance plastics & light alloys:
S ≥ 0.2 to 0.6 insert outer Ø

Internal threadM2.5
M3
M4
M5
M6
M8
M10
M12
M14
M16
Speed of rotation
in r.p.m.
from 800
to 1300
from 600
to 900
from 400
to 700
from 300
to 450
from 240
to 350

Tests strongly recommended: our laboratory is at your disposal

Advantages

  • Ensures optimal assembly
  • Speed ​​of installation
  • Possibility of mounting the tool on a screwdriver or on a hand tool
  • Long version available if hole is difficult to access
Manual
Automatic

Training square

Counter nut

Reference Ø B D C
610 0 02500 M2.5 55 5 7
610 0 03000 M3 55 5 7
610 0 03500 M3.5 60 5 7
610 0 04000 M4 60 5 7
610 0 05000 M5 75 8 13
610 0 06000 M6 75 8 13
610 0 08000 M8 75 8 13
610 0 10000 M10 95 12.5 19
610 0 12000 M12 95 12.5 19

01

Fit a left-hand turn on the driving part of the tool. Mount the insert onto the tool with the slot or cutting holes facing down.

02

Engage the insert with light pressure at the start of installation to correctly form the first threads.

03

At the end of assembly, the insert must penetrate 0.1 to 0.2 mm ± 1/4 turn) below the surface of the part.

04

Using a wrench, lock the lock nut and unscrew the turn to the left to separate the insert from the tool. The stud of the tool is placed in the middle of the cutting slot so as not to block the clearance cutting chips.

Reference Ø C A D B
610 0 02500 M2.5 18 8 6.3 78
610 0 03000 M3 18 8 6.3 78
610 0 03500 M3.5 18 8 6.3 78
610 0 04000 M4 18 8 6.3 78
610 0 05000 M5 24 12.5 10 95
610 0 06000 M6 24 12.5 10 95
610 0 08000 M8 24 12.5 10 95
610 0 10000 M10 32 16 12.5 118
610 0 12000 M12 32 16 12.5 118

01

Adjust the depth stop so that the contact face of the tool penetrates 0.1 to 0.2 mm below the surface of the part.

02

Place the insert on the well.
Slot or sharp hole downwards.
Engage with light pressure.
Screw without pressure.

03

At the end of assembly, the insert must penetrate 0.1 to 0.2 mm ± 1/4 turn) below the surface of the part.

Product

Sub-family

Type

Thread

L

Outer Shape

Ø E

Materials

Specification

Example

I

V

8

0

4

0

0

5

0

M

0

5

0

A

0

Insert

Screw

flat bottom net – with 3 cutting holes, thin walls

Internal thread
M4 (1/10 of mm)

Total length 5 mm
(1/10 of mm)

Metric pitch

External diameter 5 mm
(1/10 of mm)

Hardened steel

None

Sub Families
Mouled-in
V Screw
Expansion
P Pressed-in
U Ultrasonic
Screw insert Type
K with head and thread 45° to bottom 160° – reversible + internal hexagon
H without head and 45° thread at 160° bottom – reversible + internal hexagon
1 non-split – 60° ext. thread, ISO metric pitch
2 with cutting slot – 60° ext. thread, fine pitch
7 flat-bottom thread, 3 cutting holes
8 flat bottom net – with 3 cutting holes, thin walls
9 with cutting slot for soft platics and wood

Materials
L Brass CW 614N
A Hardened steel
1 Inox 1.4305 (A1-303)
2 Inox 1.4567 (A2-304Cu)
4 Inox 1.4404 (A4-316L)
5 Inox 1.4571 (A5-316Ti)

Specifications
0 None
N Nickel plating
ZnNi Zinc Nickel