Brass Moulding Inserts · DIN 16903 · Jamnagar, India
Round body, without shoulder, with through-hole — brass mould-in threaded insert, knurled, CW614N, M2–M12.
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The DIN 16903 Form Q is a brass mould-in threaded insert with a round body, without 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. 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 Q — dimensioned drawing (Brassland).
| Standard | DIN 16903 |
| Form | Form Q — round body, without 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 Q-M4 |
DIN 16903 Form Q is the round-body, without shoulder, through-hole member of the DIN 16903 mould-in insert family, listed in 10 metric sizes from M2 to M12. Within the family, the open-ended version is Form B; the closed-floor (blind) version is Form F; its hexagonal-body counterpart is Form P; the same body with a shoulder is Form S.
| Thread d1 | Body Ø d3 | Installed Ø d6 | Through-hole Ø d7 | Length l1 |
|---|---|---|---|---|
| M2 | 3.2 | 3.5 | 2.5 | 2.3 |
| M2.5 | 3.4 | 3.8 | 2.5 | 2.6 |
| M3 | 3.8 | 4.2 | 2.8 | 3 |
| M3.5 | 4.5 | 5 | 3.5 | 3.5 |
| M4 | 5 | 5.5 | 4 | 4 |
| M5 | 6.4 | 7 | 5 | 5 |
| M6 | 7.4 | 8 | 6 | 6 |
| M8 | 10.4 | 10 | 7 | 8 |
| M10 | 13 | 12.5 | 10 | 10 |
| M12 | 17 | 16 | 12 | 12 |
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.
Form Q is specified wherever an injection-moulded plastic part needs a strong, reusable metal thread with the through-hole geometry shown above — typical sectors and resin guidance are on the DIN 16903 hub.
All 14 forms A–U.
View →ProductTypes & selection.
View →MaterialStandard insert brass.
View →MaterialRoHS / potable option.
View →IndustryInserts in plastic housings.
View →IndustryInserts in moulded plastics.
View →GuideMould-in vs heat-set.
View →ProductFull insert catalogue.
View →To order Form Q, give the thread size, knurl type and quantity — material, knurling, MOQ and documentation are covered on the DIN 16903 moulding-inserts hub.
DIN 16903 Form A · DIN 16903 Form B · DIN 16903 Form C · DIN 16903 Form D · DIN 16903 Form E · DIN 16903 Form F · DIN 16903 Form G · DIN 16903 Form H · DIN 16903 Form P · DIN 16903 Form R · DIN 16903 Form S · DIN 16903 Form T · DIN 16903 Form U · the DIN 16903 hub.
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).
All 14 forms share the same mould-in principle and differ in body shape, shoulder and bore. Form Q is a round body, without shoulder, with through-hole. See the full A–U comparison on the moulding-inserts hub.