Precision Machining SolutionsNational Technologies, Inc.

Single & Multiple Spindle Screw Machining Services

National Technologies has been a leader in the screw machining industry since 1959. Our capabilities in high-volume, multiple-spindle screw machining, as well as lower volume single-spindle production, combined with six-spindle chucker machining and a full array of secondary operations, make National Technologies the performance leader in screw machining and production parts. National Technologies' extensive screw machining experience with varied materials, finishes, tolerances and complex features provides solutions and quick-turn-around for even the toughest screw machining projects. If screw machining is what you want, National Technologies is the quality, price and delivery source you need.

  • Multiple-Spindle Automatics
  • Single-Spindle Automatics
  • Six-Spindle Chuckers
  • In-House Tool Making

Single & Multiple Spindle Screw Machining Capabilities

Screw Machining
High Volume
Multiple-Spindle
Low Volume
Single Spindle
Equipment Capabilities
Six Spindle Chucker
Bar Feeding
Tooling
In-House Fixturing
Chucking
6 to 7 in
Bar Capacity
.5 to 2.75 in
Tubing
1026 DOM
Seamless
SAE J525 Hydraulic
Black Pipe
Materials (Metal)
Steel
Stainless Steel
Aluminum
Brass
Bronze
Copper
Zinc
Nickel
Cast Iron
Materials (Plastic)
Acetal
Delrin
Nylon
Polycarbonate
Lexan
Acrylic
PVC
Teflon
UHMW
Garolite
Outside Diameter
Up to 2.25 in
Length
Up to 6 in
OD Tolerance
± 0.0005 in
Length Tolerance
± 0.001 in
Equipment
3 New Britain #657 Chuckers 6" Chucking Capacity 6 Spindle Automatics
11 New Britain #62 Automatics 2-1/4" Capacity 6 Spindle Bar Machines
2 New Britain #816 Automatics 1-5/8" Capacity 8 Spindle Bar Machines
6 Acme-Gridley Automatics 1-1/4" Capacity 6 Spindle Bar Machines
6 New Britain Automatics 1" Capacity 6 Spindle Bar Machines
2 Acme-Gridley Automatics 9/16" Capacity 6 Spindle Bar Machines
1 Brown & Sharpe Ultramatic 2" Bar Capacity
11 Brown & Sharpe Ultramatics 1-5/8" Bar Capacity
2 Brown & Sharpe Ultramatics 1/2" Bar Capacity
1 No. 5 Warner-Swasey Turret Lathe 4" Bar Capacity & 7" Chucking Capacity
1 No. 5 Warner-Swasey Turret Lathe 2-3/4" Bar Capacity & 7" Chucking Capacity
1 No. 4 Warner-Swasey Turret Lathe 2" Bar Capacity & 7" Chucking Capacity
4 Hardinge Precision Hand Chuckers 1-1/16" Bar & 6" Chucking Capacity
3 Hardinge Precision Screw Machines 1-1/16" Bar & 6" Chucking Capacity
Other Value Added Services
Balancing
Bending
EDM
Laser Cutting
Water Jet Cutting
Honing
Burnishing (ID & OD)
Marking
Engraving
Laser Marking
Sand Blasting
Vibratory
Thermo-Deburring
Custom Packaging
Labeling
Inspection
Optical Comparator
Coordinate Measuring Machine
Granite Surface Plates
Microscopes
Testing
Hardness
Non-Destructive
Magnetic Particle
Chemical Property Verification
Mechanical Property Verification
Cleanliness
Quality
Supply Chain Management
Statistical Process Control (SPC)
Production Volume
Short to Long Runs
Lead Time
Quick Turn Around

Additional Information

Industry Focus
Aerospace & Defense
Agricultural Machinery
Automotive & Transport
Communications
Construction, Mining & Heavy Equipment
Consumer Products
Energy & Utilities
Engine Manufacturers
Fluid Control Equipment, Pump, Seal & Valve
Fuel Systems
Hydraulics
Industrial Machinery & Equipment
Medical
Power Generation
Recreational Equipment
Industry Standards
ISO 9001:2008
ASQ Certified Inspectors
NJSU/APQP
File Formats
SolidWorks
Anvil
Bobcad
FAI Process Improvement
Gibbs
Hardinge Masterkey
MicroEstimating
PMXpert Maintenance
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