Custom Fasteners Manufacturing
Custom fasteners manufacturing for bolts, nuts, screws and studs from M1.6 to M42, with ±0.005 mm on critical diameters. No MOQ; prototypes ship in 3–5 days.
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M1.6–M42
Thread Size Range
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0.02 mm
Head Concentricity
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3–5 days
Prototypes Ship
Non-Standard Fasteners Turned to Your Drawing
DEK makes the bolts, nuts, screws and studs catalogues do not stock: odd lengths, non-standard heads, left-hand or fine-pitch threads, cross-drilled shanks for safety wire, captive and shoulder designs, in stainless, titanium, A286, brass and alloy steel.
Parts are turned on Swiss-type lathes with threads to ISO 965 6g/6H or ASME B1.1 2A/3A. With no MOQ, 10 or 10,000 pieces get the same engineer-reviewed quote within 6 hours. Fasteners are part of our custom CNC machined parts catalogue.
Types of Fasteners We Machine
Bolts, nuts, screws, studs and special hardware turned from stainless, titanium, A286, brass and alloy steel bar.
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Custom BoltsHex, socket head, 12-point, shoulder, eye and T-bolts in any length. -
Custom NutsHex, jam, flange, castle, slotted, knurled thumb and round nuts. -
Custom Screws CNC TurnedSpecial heads, captive, thumb and set screws with dog, cup or cone points. -
Studs & Threaded RodsDouble-ended, reduced-shank and tap-end studs, different pitch each end. -
Non-Standard FastenersExtra-fine pitch, left-hand, lockwire cross-drilled and metric-to-imperial. -
Aerospace Fasteners CustomMade to your drawing in A286, titanium grade 5 and Inconel, with certs.
Fastener Materials, Processes & Tolerances
Thread size, class, concentricity and finish are set by material choice and by how each feature is turned, tapped or milled.
Design Tips for Custom Fasteners
Five drawing decisions that set cost, fit and fatigue life of a custom bolt, screw or stud before it reaches the lathe.
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Specify Thread Class
Give class, not just size. 6g is standard; 4g/6h or 3A/3B costs more and suits only gauging or vibration-critical joints.
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Tolerance Shoulders Apart
On shoulder bolts, tolerance shoulder diameter (h6 or h8) and length separately from thread length; add an undercut at the transition.
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Call Out Lockwire Holes
Add a lockwire hole callout with its diameter and its orientation relative to the drive recess.
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Prevent Galling
Titanium or stainless fasteners in stainless tapped holes need a dry-film or anti-seize finish, or expect galling.
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Design for Fatigue
For fatigue-loaded parts, ask for rolled threads and a fillet under the head of at least 0.1× nominal diameter.
What to Call Out on Your Drawing
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Thread Size and Class
State thread size and class (ISO 965 6g/6H or ASME B1.1 2A/3A) so every thread is gauged go/no-go to the right limit.
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Plating and Thread Fit
Say whether thread tolerance applies before or after plating: zinc adds 5–12 µm per flank and can close a tight class.
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Material and Strength
Name the grade and target: 4140 to class 8.8, 10.9 or 12.9 equivalent, A286 up to 35 HRC, titanium grade 5 as machined.
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Quantity and Certificates
Give quantity and traceability needs; heat numbers come from spectrometer-verified bar, with FAI reports on request.
Applications & Industries
Custom bolts manufacturing for aerospace and defense assemblies in A286 and titanium, medical instrument screws, and hardware for electronics and test gear.
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Aerospace
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Medical
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Automotive
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Robotics
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Semiconductor
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Electronic
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Telecom
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Drone & UAV
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Energy
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Oil & Gas
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Marine
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Industrial Equipment
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Construction
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Agriculture
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Consumer Products
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Military & Defense
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Mining
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AerospaceNon-flight-critical brackets, cabin hardware and fittings under AS9100D, in 7075 aluminum, Ti-6Al-4V and Inconel 718, with FAI.Learn More -
MedicalInstrument shafts, handles and cannulas in 316L stainless, titanium and PEEK under ISO 13485, with lot traceability as standard.Learn More -
AutomotivePrototype and low-to-mid-volume sensor housings, valve bodies and shafts in aluminum, 4140 and 4340 alloy steel, stainless and brass.Learn More -
RoboticsJoint housings, harmonic drive flanges and gripper fingers in aluminum and hardened steel, with 5-axis milling in one setup.Learn More -
SemiconductorChamber components, wafer handling fixtures and vacuum flanges in 6061 aluminum, 316L, PEEK and Kovar, with burr-free edges.Learn More -
ElectronicConnector bodies, heat sinks, RF shields and precision pins in aluminum, brass and copper, held to ±0.01 mm on contact features.Learn More -
TelecomWaveguide components, filter housings and RF enclosures in aluminum and copper alloys, with silver or nickel plating for conductivity.Learn More -
Drone & UAVMotor mounts, gimbal frames and landing gear fittings in 7075 aluminum, titanium and magnesium to cut weight without losing stiffness.Learn More -
EnergyBattery end plates, busbars, inverter housings and fuel-cell fittings in aluminum, copper and stainless, machined flat and burr-free.Learn More -
Oil & GasValve components, manifold blocks, downhole tool parts and flanges in 4140, 17-4 PH, duplex 2205 and Inconel, with hardness specs.Learn More -
MarinePropeller shafts, pump parts and deck hardware in 316 stainless, bronze and aluminum bronze, chosen first for corrosion resistance.Learn More -
Industrial EquipmentGripper plates, linear guide mounts, cam followers and machine frames in aluminum and steel, with fixtures kept on file for repeats.Learn More -
ConstructionStructural brackets, anchoring hardware and hydraulic fittings in mild steel, alloy steel and aluminum, zinc plated or powder coated.Learn More -
AgricultureGearbox housings, shafts, sprayer nozzle bodies and sensor mounts in cast iron, steel and stainless for abrasion and moisture.Learn More -
Consumer ProductsKnobs, handles, enclosure parts and audio hardware where the machined surface shows, anodized, bead blasted or polished to sample.Learn More -
Military & DefenseOptical mounts, enclosures and accessory rails in aluminum, steel and titanium, with material certification and FAI reports.Learn More -
MiningWear plates, bushings, crusher components and hydraulic fittings in hardened alloy steel, bronze and stainless for dust and vibration.Learn More
Why DEK for Custom Nuts Manufacturing
A catalogue fastener costs cents; a custom one is only worth it if the thread is right the first time.
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Every Thread Gauged
Every thread is checked with go/no-go gauges to ISO 965 or ASME B1.1 class before the lot ships.
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Concentricity at FAI
Head-to-shank concentricity of 0.02 mm is checked at first article inspection, not assumed.
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Traceable Bar Stock
Material heat numbers are recorded from spectrometer-verified bar, so aerospace and medical customers can trace lots.
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One Coordinated Job
Swiss turning, tapping, heat treatment and plating are coordinated in one job, from 10 prototypes to 10,000 pieces.
Engineer-Reviewed Quotes
Every drawing is reviewed by an engineer, with a quote back within 6 hours. DEK is ISO 9001:2015, ISO 13485 and AS9100D certified by TÜV.
Certified Fastener Quality
Fasteners are made under ISO 9001:2015, ISO 13485 and AS9100D, certified by TÜV.
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AS9100DAerospace Quality Management System
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ISO 9001:2015Quality Management Standard
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ISO 13485Medical Devices Quality Management
Fastener Materials and Finishes
Metals and finishes we machine and apply to custom bolts, nuts, screws and studs, each linked to its page.
Surface Finishes
Need another grade or thread form? Ask our engineers
All MaterialsCustom Fasteners FAQ
MOQ, aerospace work and thread standards for custom bolts, nuts and screws.
Get a Quote for Custom Fasteners Manufacturing
Send a drawing with thread size and class, material, finish and quantity. Engineer-reviewed quotes return within 6 hours.
- No MOQ: 10 to 10,000 pieces
- Prototypes ship in 3–5 days
- Threads from M1.6 to M42
- ±0.005 mm on critical diameters
- Go/no-go gauging on every thread
Ready to Scale Your Project?
Get started with a stable process and controlled quality. Let's discuss your project.
