This product is regulated by the following standards:

DIN 16903-1 DIN 16903-2 DIN 16903-3 DIN 16903-4

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Insert nuts for plastic mouldings

This product is regulated by the following standards:

Standard DIN 16903-1

Open Insert Nuts for Plastics Mouldings

Dimensions in mm - source DIN 16903-1 Withdrawn Publication Date: 12-1974
d1 thread size	M 3	M 3.5	M 4	M 5	M 6	M 8	M 10	M 12
a1	0.9	1	1.2	1.6	1.8	2	3	3.5
a2	1.2	1.6	1.8	2	2.5	4	4	5
b1	1.2	1.4	1.4	1.8	2.4	4	4	5
b2	1	1	1	1	1	1	1	1
b3	1.2	1.4	1.4	2.5	3	4	6	7
d3	3.8	4.5	5	6.4	7.4	10.4	13	17
d6	4.2	5	5.5	7	8	10	12.5	16
e	5.8	6.1	6.9	8.1	10.4	12.7	16.2	21.9
l1	3	3.5	4	5	6	8	10	12
l2	4.5	5.5	6	7.5	9	12	15	18
r	0.3	0.3	0.4	0.6	0.6	0.6	0.6	0.6
s	5	5.5	6	7	9	11	14	19

Standard DIN 16903-2

Closed Insert Nuts with Disc for Plastics Mouldings

Dimensions in mm - source DIN 16903-2 Withdrawn Publication Date: 12-1974
d1 thread size	M 3	M 3.5	M 4	M 5	M 6	M 8	M 10	M 12
a1	0.9	1	1.2	1.6	1.8	2	3	3.5
a2	1.2	1.6	1.8	2	2.5	4	4	5
b1	1.2	1.4	1.4	1.8	2.4	4	4	5
b2	1	1	1	1	1	1	1	1
b3	1.2	1.4	1.4	2.5	3	4	6	7
d3	3.8	4.5	5	6.4	7.4	10.4	13	17
d5	4.2	5	5.5	7	8	10	12.5	16
e	3.5	6.1	6.9	8.1	10.4	12.7	16.2	21.9
l1	3	3.5	4	5	6	8	10	12
l2	4.5	5.5	6	7.5	9	12	15	18
r	0.3	0.3	0.4	0.6	0.6	0.6	0.6	0.6
s	5	5.5	6	7	9	11	14	19

Standard DIN 16903-3

Closed Insert Nuts with Dead Hole for Plastics Mouldings

Dimensions in mm - source DIN 16903-3 Withdrawn Publication Date: 12-1974
d1 thread size	M 3	M 3.5	M 4	M 5	M 6	M 8	M 10	M 12
a1	1.4	1.5	1.5	1.8	2	2.8	3.5	4
a2	1.0	2	2	2.0	3	4	0	0
b1	1.8	1.8	2.5	3	3.5	4.5	5	6
b2	1	1	1	1	1	1	1	1
b3	1.8	2	2.8	3.5	4	5.5	6	7
d3	3.8	4.5	5	6.4	7.4	10.4	13	17
d6	4.2	5	5.5	7	8	10	12.5	16
e	5.8	6.1	6.9	8.1	10.4	12.7	16.2	21.9
l1	3	3.5	4	5	6	8	10	12
l2	4.5	5.5	6	7.5	9	12	15	18
l4	7	8	9	10.8	12.8	16.6	20	23.8
l3	5.5	6	7	8.3	9.8	12.6	15	17.8
r	0.3	0.3	0.4	0.6	0.6	0.6	0.6	0.6
s	5	5.5	6	7	9	11	14	19

Standard DIN 16903-4

Insert nuts; heavy type for plastics mouldings and pressure die castings with dead hole

Dimensions in mm - source DIN 16903-4 Withdrawn Publication Date: 12-1974
d1 thread size	M 2	M 2.5	M 3	M 3.5	M 4	M 5	M 6	M 8	M 10	M 12	M 16
a1	0.6	0.6	0.8	0.8	0.8	1	1.2	-	-	-	-
a2	1	1.1	1.3	1.6	1.8	2.2	2.8	-	-	-	-
a3	-	-	-	-	1	1	1.2	1.5	1.5	2	3
a4	-	-	-	-	4	4.5	5	6	8	10	11
b1	1.2	1.4	1.5	1.7	1.9	2.2	2.7	-	-	-	-
b2	1.2	1.4	1.5	1.7	1.9	2.2	2.7	-	-	-	-
b3	-	-	-	-	2	2.5	3	4	5	6	8
b4	-	-	-	-	2	2.5	3	4	5	6	8
d3	3.2	3.5	4	4.6	5.3	6.6	7.8	10.5	13	15.7	21
ds	4.5	5	5.5	6	7	9	10	12	15	18	24
l1	3.5	4	4.5	5.5	6	7.5	9	-	-	-	-
l2	-	-	-	-	8	10	12	16	20	24	32
l3	5.2	6	7	8	9	10.5	12.8	-	-	-	-
l4	-	-	-	-	11	13.3	15.8	20.6	25	29.8	39.5
t	0.5	0.5	0.5	0.5	0.5	0.6	0.6	0.6	0.6	0.8	0.8
r	0.3	0.3	0.3	0.3	0.4	0.6	0.6	0.6	0.6	0.6	0.8

Full list of Suppliers of Insert nuts for plastic mouldings

Italy

FIXI Srl

Distributor of threaded inserts, self-fixing nuts, blind rivets and pins.

Italian leader in the distribution of self clinching fasteners.

Italy

Manufacturer and distributor of self clinching inserts for sheets metal, threaded inserts for plastic materials, wire thread inserts ELICEL®, thread forming screws for plastic and light alloys, quarter - turn locks and quick access fasteners SOUTHCO®

ELICEL - Standard wire thread insert, self locking, tangfree

Italy

SALCA Srl

Manufacturing and distribution of self tapping bushings, WTI helical inserts, grooved pins, grooved nails, expansion rivets and nails with grooves Kerpin®, trilobular threaded inserts, self clinching studs, standard and customized fasteners.

Greece

Strigos Service

Distributor of self clinching inserts for sheets metal, threaded inserts for plastic materials, thread forming screws for plastic, rivets and rivet nuts, brass inserts, security screws, special fasteners, tools, pneumatic and battery riveters, hand tools and machines.

Master Distributors of: TR Fastenings UK, HONSEL Germany, TUBTARA Belgium, ERIM Italy, for Greece and Cyprus.

Germany

KOHLHAGE Fasteners Gmbh & Co. KG

Dsitributor of cold formed fasteners, stampings, inserts and welding screws

France

A...

Manufacturer of mechanical attachments:

locking thread inserts, self-tapping bushes, inserts for plastics, thread inserts

Italy

A...

Distributor of standard and special self-clinching fasteners, rivet nuts and welding pins.

Italy

C...

Distributor of blind rivets, self clinching and welding fasteners, rivet nuts, wire inserts and inserts for plastics.

Taiwan

C...

Manufacturer of brass inserts and self clinching nuts and studs

Italy

D...

Distributor specialized in threaded inserts, self clinching and welding studs

Germany

D...

Distributor specialized in rivets and inserts

Italy

F...

Manufacturer of turned fasteners, rivet nuts, hinges, locking and closing systems

F...

Manufacturer of threaded inserts for all plastics, wood and metal applications.

F...

Distributor of threaded inserts and self clinching fasteners

Romania

G...

Distributor of self clinching fasteners, inserts and welding pins

Germany

H...

Manufacturer specialized in threaded inserts and furniture screws

H...

Distributor of Threadforming Screws, spring steel fasteners, Sheet Metal Fasteners and threaded inserts

Germany

H...

Distributor of blind rivets and rivet nuts

Slovakia

I...

Distributor of self clinching fasteners, threaded inserts

France

I...

Distributor of inserts for plastics and sheet metal fasteners

Taiwan

J...

Manufacturer of blind rivet nuts, insert nuts and retaining rings

Germany

K...

Manufacturer of threaded inserts for metal, plastics and wood. Threaded inserts for thin-walled moldings

Israel

L...

Distributor of inserts and trapezoidal bars

Germany

L...

Manufacturer of cold forged special fasteners, long screws, turned fasteners and insert nuts

N...

Distributor of welding fasteners, clinch fasteners, inserts and pivots

USA

R...

Distributor of inch size Solid Rivets and Semi-tubular Rivets for military and aerospace.

Threaded inserts in inches and metric sezes

Italy

R...

Manufacturer and distributor of rivets and rivet nuts

China

S...

Manufacturer of Self-Clinching nuts, Self-Clinching Standoffs, Self-Clinching Studs, Panel Fastener Assemblies, Threaded Inserts.Welding nuts, Crown screw, Self-tapping screw, Flare-in panel fastener, Self-tapping threaded inserts, Blind rivets, rivet nuts,cage nuts and various type of customized special parts.

China

S...

Manufacturer and wholesale distributor of furniture fasteners and hardware fitting

USA

S...

Manufacturer of blind rivet nuts both in inches and metric sizes

France

S...

The company specializes in manufacturing industrial fasteners. SIMAF-CFF sells fasteners for all supports, in stock or on order. SIMAF-CFF has a wide selection in stock of fasteners for wood, metal and plastics. The SIMAF-CFF catalog also offers many type of fastening products, fasteners or bolts (such as screws, nuts, rods, bolts ...).

Italy

Dimensions in mm - source DIN 16903 1-2-3-4 Publication date (1-2-3) 12-1974; (4) 03-1991
Din	Description	Beschreibung	Descrizione
DIN 16903-1	Open Insert Nuts for Plastics Mouldings	Gewindebuchsen für Kunststoff-Formteile, offen	Inserti filettati aperti per materie plastiche
DIN 16903-2	Closed Insert Nuts with Disc for Plastics Mouldings	Gewindebuchsen für Kunststoff-Formteile, geschlossen, mit Scheibe	Inserti filettati chiusi con disco per materie plastiche
DIN 16903-3	Closed Insert Nuts with Dead Hole for Plastics Mouldings	Gewindebuchsen für Kunststoff-Formteile, geschlossen	Inserti filettati con foro chieco per materie plastiche
DIN 16903-4	Insert nuts; heavy type for plastics mouldings and pressure die castings with dead hole	Gewindebuchsen für Kunststoff-Formteile und Druckgußteile, geschlossen, schwere Bauart	Inserti filettati tipo pesante con foro chieco per materie plastiche

Suppliers of Insert nuts for plastic mouldings

Technical data

Standard DIN 16903-1

Standard DIN 16903-2

Standard DIN 16903-3

Standard DIN 16903-4

Details