Brass Moulding Inserts · DIN 16903 · Jamnagar, India

DIN 16903 Form S

Round body, with shoulder, with through-hole — brass mould-in threaded insert, knurled, CW614N, M2–M12.

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The DIN 16903 Form S is a brass mould-in threaded insert with a round body, with shoulder, with through-hole, 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 through-hole lets a screw pass completely through the insert; the round body suits lighter loads and tighter spacing; and the shoulder sets seating depth with a flush bearing face. 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 S brass moulding insert (round body, with shoulder, with through-hole) — engineering drawing

DIN 16903 Form S — dimensioned drawing (Brassland).

Specification

Standard	DIN 16903
Form	Form S — round body, with shoulder, with through-hole
Installation	Mould-in / insert moulding (over-moulded)
Thread	M2–M12 (internal 6H)
Material	CW614N (CuZn39Pb3); lead-free CW724R, steel/stainless on request
Retention	External knurling against rotation and pull-out
Order example	Threaded insert DIN 16903 brass S-M4

Datasheet — dimensions to DIN 16903

Thread d1	Body Ø d3	Installed Ø d6	Through-hole Ø d7	Length l2
M2	3.2	3.5	2.5	3.5
M2.5	3.4	3.8	2.5	4
M3	3.8	4.2	2.8	4.5
M3.5	4.5	5	3.5	5.5
M4	5	5.5	4	6
M5	6.4	7	5	7.5
M6	7.4	8	6	9
M8	10.4	10	7	12
M10	13	12.5	10	15
M12	17	16	12	18

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.

Product

Moulding Inserts — DIN 16903

All 14 forms A–U.

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Threaded Inserts Guide

Types & selection.

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CW614N (CuZn39Pb3)

Standard insert brass.

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CW724R Lead-Free

RoHS / potable option.

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Electronics & PCB

Inserts in plastic housings.

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Automotive

Inserts in moulded plastics.

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Insert Installation Guide

Mould-in vs heat-set.

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Insert Range

Full insert catalogue.

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How it works

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Give the form, thread, knurl type and quantity. We are a brass turned-parts manufacturer in Jamnagar, India, exporting to 40+ countries.

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Frequently asked questions

How is a DIN 16903 Form S 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 S 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 S is a round body, with shoulder, with through-hole. 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