Pernos · custom bolts · threaded connections
For projects beyond standard catalogue parts, manage custom diameters, lengths, shoulders, heads, holes and thread geometries from prototype through repeat production in one manufacturing plan.
One accountable teamCNC-Turkey manages international sales, engineering communication, production coordination, quality documentation and export operations. Manufacturing is carried out through an established machining infrastructure in Istanbul, Türkiye.
Component scope
Pernos, custom bolts, studs and threaded components
Critical features
Shoulder diameter, thread, runout, holes and head geometry
Complementary processes
Heat treatment, grinding, coating and inspection
Order model
Prototype, low volume and repeat production
custom industrial fastener manufacturing
For technical buyers, manufacturing the shape is only part of the requirement. Material, thread specification, strength or hardness, coating, traceability and batch consistency are reviewed together with the drawing and service conditions before quotation.
PDF, STEP/STP, IGES/IGS, DXF, DWG and ZIP files are accepted.
No account needed · or by email: info@cnc-turkey.com
Perno is a broad term used in several markets for a generally cylindrical component that joins parts, transfers load or works as a hinge or pivot. Depending on the sector and country, it may refer to a pin, bolt, stud, shoulder shaft or pivot bolt. The drawing geometry, thread, tolerance and service load—not the name alone—therefore govern manufacturing.
Drawing-based production can be evaluated where standard dimensions or property classes are insufficient. Load-bearing shoulders, thread runouts, under-head radii, cross holes and locking features are reviewed as part of the complete component.
A typical route includes technical and revision review, material sourcing, CNC turning/milling, thread manufacture, heat treatment where required, finish machining or grinding, coating, thread and dimensional inspection, and protective packing. The appropriate thread-making method is selected during quotation from geometry, quantity and specification.
C45/C45E, 42CrMo4, 34CrNiMo6, suitable case-hardening steels and stainless grades can be reviewed against the drawing. Material or property requirements are confirmed from tensile/shear load, impact, fatigue, wear, corrosion, temperature and the mating component. A standard bolt class is not treated as automatically equivalent to a custom geometry without engineering review.
The quotation and inspection plan should clearly define thread standard, diameter-pitch, tolerance class, right/left hand, full thread length and inspection method. Shoulder diameter, under-head radius, concentricity, runout and hole position are treated as separate functional checkpoints. Achievable tolerance depends on component size, material, heat treatment and finishing route.
Zinc, phosphate, black oxide, hard chrome or other suitable finishes are reviewed together with corrosion target, friction behaviour, coating thickness, masking areas and risks such as hydrogen embrittlement. Post-coating thread fit and critical dimensions are tied to the inspection plan; required records are agreed during quotation.
For a fast, realistic manufacturability review, send a PDF drawing and, where available, STEP/STP together with quantity, annual demand, material/standard, thread data, critical tolerances, heat treatment, coating, documentation needs and destination country. State separately if reverse engineering from an existing sample is required.
Real manufacturing images
These are real machining images; customer, dimension and project details remain confidential. Suitability of a new component is always confirmed from its own drawing.
Custom geometry
Thread, shoulder, groove and contact surfaces are managed under one drawing and inspection plan.
Batch consistency
Drawing revision, material, process and inspection plan are maintained for repeat orders.
Pre-quotation review
Geometry, material, tolerance, quantity and finishing are reviewed together.
Manufacturing
Sourcing
Manufacturing equipment
| Capacity category | Process | Suitable components / capability |
|---|---|---|
| CNC Turning Centres | 3- and 4-axis turning | Shafts, flanges, bushings and other rotational components |
| Multi-Task Turn-Mill Centres | Turn-mill and angled operations | C/Y-axis, sub-spindle and single-setup options for complex rotational parts |
Materials
C45 · C45E · S235 · S355JR · 41Cr4 · 42CrMo4 · 34CrNiMo6 · 20MnCr5 · 17CrNiMo6
Equivalency is checked against the drawing and material standard.
1.2714 · 1.2365 · 1.2367 · 1.2344 · 55NiCrMoV7
Heat-treatment condition and machinability are reviewed during quotation.
1.4305 · 1.4404 · 1.4435 · 1.4122
RFQ
Share the drawing and CAD file
Review manufacturability, material and critical requirements
Confirm material, quantity and quality requirements
Receive a quotation with lead time and delivery terms
Agree the sample or first-article approach where required
Production and process coordination
Inspection, documentation and packing
Export shipment and delivery follow-up
Continue your sourcing review
FAQ
Usage varies by market; perno can mean a pin, bolt, stud or pivot component. Once thread, head, shoulder, fit and loading are defined on the drawing, the correct manufacturing and inspection route can be selected.
Yes, subject to drawing review. State thread standard, diameter-pitch, tolerance class, hand, full thread length, material and quantity in the RFQ.
Subject to technical and specification review, heat treatment, grinding and suitable coatings can be coordinated within the manufacturing plan. Hardness, coating thickness, masking and final dimensions are confirmed before quotation.
Suitability depends on geometry, quantity and capacity. The approved revision, material, process and inspection plan are retained as the reference for repeat orders.
Send a PDF drawing and, where available, STEP/STP with quantity, annual demand, material, thread standard, critical dimensions, heat treatment/coating, documentation needs and destination country.
RFQ
Quantity, material, quality requirements and delivery country help us review the appropriate manufacturing and shipment route.
No account needed.
Your drawings are kept confidential and used only for quotation.
