Multi Spindle Screw Machining

Multiple Spindle Screw Machine Products & Machined Parts

Multi-spindle screw machining delivers the lowest piece price for medium-to-very-high volumes by running several spindles at once to drill, ream, mill, and thread in a single cycle. Avanti Engineering, Inc. (ISO 9001:2015) machines carbon & alloy steels, stainless, aluminum, copper/brass from 0.125″ to 2.625″ bar (round & hex). We provide PPAP/FAI, heat/lot traceability, and programs like VMI and blanket releases for OEM-grade, repeatable parts—on time and at scale.

Why Multi-Spindle Matters for Industrial Buyers

When demand spikes and delivery windows are tight, cycle time is everything. Multi-spindle equipment executes multiple operations simultaneously—turning, cross-drilling, back-drilling, reaming, milling, threading, knurling, and chamfering—within a single coordinated cycle.

Business outcomes:

• Shorter cycle times and lower cost per piece at volume

• Consistent quality and stable Cp/Cpk across long runs

• Fewer secondary operations, consolidating processes and suppliers

• Predictable lead times that keep production schedules on track

Core Capabilities

Platforms & Equipment

• Davenport Multi-Spindle Screw Machines

• Acme-Gridley Multi-Spindle Screw Machines

• New Britain Multi Spindle Screw Machines
• Brown & Sharpe Automatic Screw Machines

• CNC Swiss & CNC multi-Axis lathes for complex primary & secondary machining & reduced operations

Bar Capacity & Stock Forms

• Round bar: 0.125″ (1/8″) min to 2.625″ (2-3/4″) max diameter

• Hex/Square: efficient hex heads/flats without secondary milling

• Continuous bar feed (raw bar or stock reel) for uninterrupted throughput

Materials We Machine

• Carbon & Alloy Steels: 12L14, 1215, 1144, 8620 (and others per print)

• Stainless Steels: 303, 304, 316, 410, 416

• Aluminum: 2011 T-3, 2024, 6061, 6262 T611, 7075

• Copper & Brass (free-machining grades and lead-free options)

We manufacture to customer print/spec for OEMs and industrial buyers—we do not sell off-the-shelf fasteners.

Operations & Attachments (On-Machine)

• Drilling, cross-drilling, back-drilling

• Reaming & boring

• Milling & slotting

• Threading (cut or rolled; UN/UNF, metric, NPT)

• Knurling

• Chamfering & in-process deburring

When Multi-Spindle Is the Best Fit

Choose multi-spindle when your parts and business case include:

• Medium–very high annual usage with release schedules

• Repeatable geometries that benefit from simultaneous operations

• Tight, consistent tolerances with stable material specs

• Throughput-critical delivery targets and cost-down objectives

For complex geometries, frequent rev changes, or lower volumes, we can recommend CNC Swiss, traditional CNC turning, or a hybrid process that balances speed, flexibility, and cost.

Typical Parts & Applications

• Fluid power & hydraulics: fittings, unions, ferrules, adaptors, hose ends

• Automotive & heavy equipment: pins, shafts, bushings, sleeves, spacers

• Industrial/Commercial hardware: standoffs, threaded inserts, couplings (to print)

• Electrical & connectors: terminals, contact bodies, compression nuts

• HVAC & appliance: nozzles, valve components, custom studs, manifolds

Common specs: precision bores, grooves/undercuts, rolled or cut threads, hex/flats, knurls, controlled radii & chamfers, surface finish targets aligned to function (seal, press-fit, torque).

Engineering & Quality Support

Design for Manufacturability (DFM): Early collaboration on tolerances, GD&T, datum schemes, and material grades to prevent cost and schedule surprises.
Process Design: Optimal platform selection (multi-spindle, CNC Swiss, hybrid) and tooling package to consolidate operations.
Quality System: ISO 9001:2015; in-process and final inspection per CTQs; PPAP/FAI, C of C, material certs, and heat/lot traceability available.
Documentation & Compliance: RoHS/REACH, custom inspection plans, gauge R&R support upon request.

Procurement Playbook (What to Share for a Fast, Accurate Quote)

• Latest drawing & revision (PDF + native CAD if available)

• Annual usage & release cadence (EOQ, blanket PO, Kanban/VMI)

• Material grade/temper and any finishing requirements

• Critical dimensions & CTQs (tolerances, surface finish, leak/pressure specs)

• Inspection & documentation needs (FAI/PPAP level, certs, traceability)

• Secondary services (heat treat, plating, cleaning, assembly, kitting)

• Packaging & labeling (ESD, lot size, barcodes, special containers)

Operations, Finishing & Packaging

• Secondary Operations: broaching, parting, slotting, light milling/turning, CNC finishing, for complex features & Light assembly options.

• Finishes: black oxide, zinc, nickel, tin, passivation, anodize, Loc-Tite phosphate (via vetted partners)

• Heat Treat: case hardening, through hardening, Anneal, stress relief

• Cleaning/Preservation: solvent-based per spec; rust-preventive options

• Kitting & Packaging: custom trays, separators, barcodes, dock-ready packs

Industries We Serve

• Automotive & commercial vehicles

• Hydraulics & pneumatics / fluid handling

• Industrial equipment & automation

• HVAC, appliance, and building products

• Electrical/connector and general industrial

FAQs 

How do I know if multi-spindle is right for my part?
If your annual usage is medium-to-high and geometry includes repeatable drilling/reaming/threading features, multi-spindle generally provides the fastest cycle time and lowest piece price.

What tolerances can you hold?
We machine to print and align process controls to your CTQs. During quoting we’ll flag features that may require alternate processing (e.g., grinding, honing) to meet tolerance/finish combinations.

Can you run hex stock and form hex heads?
Yes. We have hex bar capacity and on-machine attachments for hex features and heads, which often removes secondary milling.

What documentation can you provide?
PPAP/FAI, C of C, material certs, and full heat/lot traceability per your requirements.

Do you support inventory programs?
Yes—blanket POs, scheduled releases, Kanban, and VMI to stabilize pricing and lead times while reducing on-hand inventory.

Do you sell standard fasteners?
No. We manufacture custom parts to customer drawings; we do not sell off-the-shelf fasteners.

Bring us your print, annual usage targets, and timing. We’ll recommend the most cost-effective path—multi-spindle, CNC, or a hybrid—to hit your quality, delivery, and cost goals.

Send your RFQ today!

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