Name: TWZS Twin Studded Inserts
Availability: InStock

TWZS Twin Studded Inserts Inch Inserts for Plastic

Features

Self–aligning installation using heat.

Opposing helical knurls and knurled vanes provide superior pull–out and torque–out resistance.

Double–ended to assist automatic feeding by eliminating the need for orientation during installation.

Thin boss walls permit compact design.

Available in a wide variety of thread sizes, stud lengths and options.

Loading Parts

General

Insert Thread	Insert Thread Code	Boss		D Insert Diameter	P Pilot Diameter
Insert Thread	Insert Thread Code	B Hole Dia. +0.10 -0.00	W Wall Thickness Min.	D Insert Diameter	P Pilot Diameter
M2 x 0.4	M2	3.20	1.30	3.50	3.10
M2.5 x 0.45	M2.5	4.00	1.60	4.40	3.90
M3 x 0.5	M3	4.00	1.60	4.40	3.90
M3.5 x 0.6	M3.5	4.80	1.80	5.20	4.70
M4 x 0.7	M4	5.60	2.10	6.10	5.50
M5 x 0.8	M5	6.40	2.60	6.80	6.30
M6 x 1.0	M6	8.00	3.30	8.50	7.90
M8 x 1.25	M8	9.60	4.50	10.00	9.50
M10 x 1.5	M10	11.90	6.00	12.30	11.80
M12 x 1.75	M12	16.00	8.00	16.30	15.80

(1) All dimensions are in millimeters and reference unless toleranced.

Insert Length

Insert Thread	L Insert Length	Insert Length Code
M2 x 0.4	3.00	3.00
M2 x 0.4	3.942	3.94
M2.5 x 0.45	4.00	4.00
M2.5 x 0.45	5.692	5.69
M3 x 0.5	4.00	4.00
	4.80	4.80
	5.692	5.69
M3.5 x 0.6	5.00	5.00
M3.5 x 0.6	7.092	7.09
M4 x 0.7	4.00	4.00
	4.80	4.80
	5.80	5.80
	8.102	8.10
M5 x 0.8	5.80	5.80
M5 x 0.8	9.472	9.47
M6 x 1.0	6.80	6.80
	9.50	9.50
	12.652	12.65
M8 x 1.25	12.652	12.65
M10 x 1.5	12.652	12.65
M12 x 1.75	15.882	15.88

(1) All dimensions are in millimeters and reference unless toleranced.
(2) Preferred insert length.
(3) Custom insert lengths available by request.

Stud Thread

Stud Thread	Stud Thread Code	D Insert Diameter	S – Stud Length
			5.00	6.00	8.00	10.00	12.00	14.00	16.00	18.00	20.00	25.00
			Stud Length Code
M2 x 0.4	M2	3.50	5.00	6.00	8.00	—	—	—	—	—	—	—
M2.5 x 0.45	M2.5	4.40	5.00	6.00	8.00	10.00	—	—	—	—	—	—
M3 x 0.5	M3	4.40	5.00	6.00	8.00	10.00	12.00	—	—	—	—	—
M3.5 x 0.6	M3.5	5.20	5.00	6.00	8.00	10.00	12.00	14.00	—	—	—	—
M4 x 0.7	M4	6.10	5.00	6.00	8.00	10.00	12.00	14.00	16.00	—	—	—
M5 x 0.8	M5	6.80	5.00	6.00	8.00	10.00	12.00	14.00	16.00	18.00	20.00	—
M6 x 1.0	M6	8.50	—	6.00	8.00	10.00	12.00	14.00	16.00	18.00	20.00	25.00
M8 x 1.25	M8	10.00	—	—	8.00	10.00	12.00	14.00	16.00	18.00	20.00	25.00
M10 x 1.5	M10	12.30	—	—	—	10.00	12.00	14.00	16.00	18.00	20.00	25.00
M12 x 1.75	M12	16.30	—	—	—	—	12.00	14.00	16.00	18.00	20.00	25.00

(1) All dimensions are in millimeters and reference unless toleranced.
(2) Custom stud lengths available by request.

Boss Design Recommendation

The TWZ Twin Zert is designed to be installed into a straight molded hole with a 0.5° inclusive taper. The top of the hole should not be countersunk or counterbored as this will decrease the insert’s performance. The recommended hole size applies at the point reached by the bottom of the insert. Molded holes should be used wherever possible as drilled holes may result in diminished performance. Minimum boss wall thicknesses shown are for reference and may vary depending on the type of plastic.

Installation

Pre-heating is the recommended installation method. The insert should be hot enough to soften the plastic without melting it to avoid flash around the top. Avoid excessive pressure that would force an insert into a hole without allowing the plastic to properly soften and flow around the insert features.