Brass Moulding Inserts · DIN 16903 · Jamnagar, India

DIN 16903 Form B

Round body, without shoulder — brass mould-in threaded insert, knurled, CW614N, M2–M12.

DatasheetAll 14 Forms

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The DIN 16903 Form B is a brass mould-in threaded insert with a round body, without shoulder, knurled on its outside so that when it is placed in the injection mould and plastic is moulded around it, it locks into the plastic part and gives a durable metric thread; the plain bore provides a standard internal metric thread; the round body suits lighter loads and tighter spacing. Brassland machines it from free-cutting brass CW614N (CuZn39Pb3) — or lead-free CW724R — to DIN 16903, as part of our moulding-insert programme.

DIN 16903 Form B brass moulding insert (round body, without shoulder) — engineering drawing

DIN 16903 Form B — dimensioned drawing (Brassland).

Specification

StandardDIN 16903
FormForm B — round body, without shoulder
InstallationMould-in / insert moulding (over-moulded)
ThreadM2–M12 (internal 6H)
MaterialCW614N (CuZn39Pb3); lead-free CW724R, steel/stainless on request
RetentionExternal knurling against rotation and pull-out
Order exampleThreaded insert DIN 16903 brass B-M4

Datasheet — dimensions to DIN 16903

Thread d1Body Ø d3Installed Ø d6Length l1
M23.23.52.3
M2.53.43.82.6
M33.84.23
M3.54.553.5
M455.54
M56.475
M67.486
M810.4108
M101312.510
M12171612

Dimensions in mm to DIN 16903; tolerances d3 h12, d6 h11, coaxiality per DIN ISO 1101. Further dimensions (d2, d4, l, r, t, e) and intermediate sizes to drawing. d5 = stock diameter before knurling.

Applications

DIN 16903 mould-in inserts give a strong, reusable metal thread in a plastic part. Typical applications include injection-moulded housings and enclosures, automotive interior and under-hood plastics, electrical and electronics housings, EV connector and battery-pack plastics, telecom and instrumentation cases, and appliance and power-tool bodies. All parts are made to order to your drawing.

Related pages

Product
Moulding Inserts — DIN 16903

All 14 forms A–U.

View →Product
Threaded Inserts Guide

Types & selection.

View →Material
CW614N (CuZn39Pb3)

Standard insert brass.

View →Material
CW724R Lead-Free

RoHS / potable option.

View →Industry
Electronics & PCB

Inserts in plastic housings.

View →Industry
Automotive

Inserts in moulded plastics.

View →Guide
Insert Installation Guide

Mould-in vs heat-set.

View →Product
Insert Range

Full insert catalogue.

View →
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Frequently asked questions

How is a DIN 16903 Form B insert installed?

It is a mould-in insert: it is loaded into the injection tool and the plastic is moulded around it, embedding the thread as the part is formed (not pressed or heat-set in afterwards).

What makes Form B different from the other DIN 16903 forms?

All 14 forms share the same mould-in principle and differ in body shape, shoulder and bore. Form B is a round body, without shoulder. See the full A–U comparison on the moulding-inserts hub.

What material and thread sizes are available?

Standard brass is CW614N (CuZn39Pb3); lead-free CW724R is available for potable-water and RoHS/REACH-sensitive parts. Metric threads M2–M12; intermediate sizes to drawing.

Which knurling can be specified?

Diamond (cross), straight or unidirectional knurling can be specified to tune pull-out and torque resistance for your resin and load case.

← All DIN 16903 forms