Knife Lock (Press-In Inserts)

This insert nut has knurling in the same direction and is mainly used for thermoset plastics.
With the heat insertion, the unidirectional knurling reduces stress on plastics.
This is particularly advantageous, for example, when there is not enough clearance from the edge of the boss.
Major insertion methods
Press-in Insertion ,Heat Staking Insertion
Material
Brass (C3604), Aluminum Alloy (made-to-order)
Plastic
Thermoset plastics and thermoplastics

■ Features

・ Inserts suitable for thermoset plastics
・ Easily mounting only by press-insertion
・ Less pressure on plastics and usable for heat insertion
・ Full compliance with RoHS Directive

■ Dimensions

Knife Lock Dimensional Drawing
Knife Lock Dimensional Drawing
品 番
ね じ
A
B
C
ローレット段数
樹脂下穴径(参考値)
 
CS3.3ーM2-2.0
M2×0.4
3.30
2.00
3.00
1
φ3.05
Part Number
Thread and Pitch
A
B
C
Pilot Hole Dimension on Plastic (Reference)
 
Thermosetting
Thermoplastic
KL3.35-M2-2.5
M2×0.4
3.35
2.5
3
φ3.2
φ3.1
KL3.3-M2-4.1
M2×0.4
3.3
4.1
3
φ3.2
φ3.1
KL4.2-M2.5-5.3
M2.5×0.45
4.2
5.23
3.72
φ3.9
φ3.8
KL4.2-M3-5.3
M3×0.5
4.2
5.23
3.72
φ3.9
φ3.8
KL5.8-M4-7.4
M4×0.7
5.8
7.4
5.3
φ5.5
φ5.4
KL6.6-M5-8.3
M5×0.8
6.57
8.28
6.11
φ6.3
φ6.2
KL8.2-M6-9.2
M6×1.0
8.17
9.19
7.71
φ7.9
φ7.8
KL9.7-M8-9.2
M8×1.25
9.72
9.19
9.26
φ9.5
φ9.4
※ Standard parts   Unit.mm

■ Knife Performance data (Reference)

Part number
PF
ABS
Pull-out (N)
Torque-out (N-m)
Pull-out (N)
Torque-out (N-m)
KL3.35-M2-2.5
278
1.1
180
0.83
KL3.3-M2-4.1
310
1.19
108
0.8
KL4.2-M2.5-5.3
904
2.92
276
1.86
KL4.2-M3-5.3
940
3.36
275
2.6
KL5.8-M4-7.4
969
5.92
351
4.76
KL6.6-M5-8.3
910
11.33
247
7.67
KL8.2-M6-9.2
1,163
19.50
319
11.17
KL9.7-M8-9.2
951
26.00
169
9.28
品 番
POM
アクリル
塩ビ
?
引抜き(N)
トルク(N-m)
引抜き(N)
トルク(N-m)
引抜き(N)
トルク(N-m)
MS2.5-M1.6-3.0
344
0.58
427
0.57
359
0.58
MS2.9-M2-2.0
248
0.51
418
0.76
257
0.71
MS4.4-M2.5-5.7
1,255
2.43
1,563
2.98
1,598
2.98
MS4.6-M3-5.7
1,769
2.96
3,155
3.92
1,876
3.09
MS6.3-M4-8.1
3,147
5.42
5,519
6.67
3,282
6.50
※The data above are experimental results obtained by Micro Fasteners. They are not a guarantee of the strength of our products.
1N≒0.098kgf
1N-m≒9.8kgf-cm
■ NOTE
・Number of knurling: Two on the KL3.35-M2-5 and KL3.3-M2-4.1
・Please contact us if you need Pb-free material for environmental reasons.
・Pilot hole diameters are for reference only. The diameter should be determined by testing before use.
・Please contact us about the knurling design when Knife Locks are used for  polycarbonate (PC) and other materials which are sensitive to residual stress.
・The diameter of the pilot hole for the mounting object should be smaller  than the outer diameter of the insert (Dimension A).
・When inserts are tightened by screws, choose the screw length so that screws do not reach the bottom of insert pilot holes.
・Be careful when using a Knife Lock with a thermo-setting resin. threading the part will be tight, depending on the diameter of the pilot hole that is selected.
・The specifications are subject to change without notice.
・Please contact us if you have any other questions.

Headed Knife Lock

Headed Knife Lock Dimensional Drawing
Headed Knife Lock Dimensional Drawing
Part Number
Thread and Pitch
A
B
C
D
E
Pilot Hole Dimension on Plastic (Reference)
 
Thermosetting
Thermoplastic
KLH3.3-M2-4.1
M2×0.4
3.3
4.1
3
4.8
0.5
φ3.2
φ3.1
KLH4.2-M2.5-5.3
M2.5×0.45
4.2
5.23
3.7
5.5
0.6
φ3.9
φ3.8
KLH4.2-M3-5.3
M3×0.5
4.2
5.23
3.7
5.5
0.6
φ3.9
φ3.8
KLH5.8-M4-7.4
M4×0.7
5.8
7.4
5.32
7.1
0.9
φ5.5
φ5.4
KLH6.6-M5-8.3
M5×0.8
6.57
8.28
6.11
7.9
1.07
φ6.3
φ6.2
KLH8.2-M6-9.2
M6×1.0
8.17
9.25
7.71
9.53
1.32
φ7.9
φ7.8
KLH9.7-M8-9.2
M8×1.25
9.72
9.25
9.26
11.1
1.32
φ9.5
φ9.4
※ Standard parts   Unit.mm

■ Headed Knife Lock Performance data (Reference)

Part Number
PF
ABS
Pull-out (N)
トルク(N-m)
Pull-out (N)
トルク(N-m)
KLH3.3-M2-4.1
291
1.16
124
0.78
KLH4.2-M2.5-5.3
639
2.01
326
0.85
KLH4.2-M3-5.3
750
3.36
226
2.00
KLH5.8-M4-7.4
797
6.24
230
4.28
KLH6.6-M5-8.3
1,174
9.50
280
6.00
KLH8.2-M6-9.2
976
16.33
240
9.17
KLH9.7-M8-9.2
1,296
24.50
199
13.00
品 番
POM
アクリル
塩ビ
?
Pull-out (N)
トルク(N-m)
Pull-out (N)
トルク(N-m)
Pull-out (N)
トルク(N-m)
MS2.5-M1.6-3.0
344
0.58
427
0.57
359
0.58
MS2.9-M2-2.0
248
0.51
418
0.76
257
0.71
MS4.4-M2.5-5.7
1,255
2.43
1,563
2.98
1,598
2.98
MS4.6-M3-5.7
1,769
2.96
3,155
3.92
1,876
3.09
MS6.3-M4-8.1
3,147
5.42
5,519
6.67
3,282
6.50
※The data above are experimental results obtained by Micro Fasteners. They are not a guarantee of the strength of our products.
1N≒0.098kgf
1N-m≒9.8kgf-cm
■ NOTE
・Number of knurling: Two on the KL3.3-M2-4.1
・Please contact us if you need Pb-free material for environmental reasons.
・Pilot hole diameters are for reference only. The diameter should be determined by testing before use.
・Please contact us about the knurling design when Knife Locks are used for  polycarbonate (PC) and other materials which are sensitive to residual stress.
・The diameter of the pilot hole for the mounting object should be smaller  than the outer diameter of the insert (Dimension D).
・When inserts are tightened by screws, choose the screw length so that screws do not reach the bottom of insert pilot holes.
・Be careful when using a Knife Lock with a thermo-setting resin. threading the part will be tight, depending on the diameter of the pilot hole that is selected.
・The specifications are subject to change without notice.
・Please contact us if you have any other questions.

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