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Amana 57331 Metric Solid Carbide CNC Spiral ‘O’ Single Flute, Plastic Cutting 4mm Dia x 20mm x 6mm Shank x 64mm Long Down-Cut Router Bit

Name: Amana 57331 Metric Solid Carbide CNC Spiral 'O' Single Flute, Plastic Cutting 4mm Dia x 20mm x 6mm Shank x 64mm Long Down-Cut Router Bit
SKU: Amana 57331
Availability: InStock

Original price was: $63.75.Current price is: $47.82.

4mmx6mmSHANK SPIRAL O PLASTIC

UPC: 738685573310 SKU: Amana 57331 Categories: Amana Tool, CNC Router Bits - Metric Sizes, Solid Carbide Spiral 'O' Flute Plastic Cutting CNC Metric Router Bits

Item Description

To be used only on CNC machines and routers with automatic feeding.

Produce super clean, smooth cuts especially in acrylic materials (Plexiglas® Lucite®) other plastics and wood. Bits are made according to strict tolerances from an exclusive carbide grade and polished to a mirror finish using Amana’s unique process. Designed to eject chips up. Ideal for industrial applications and CNC machines. Left hand helix left hand cut.

Excellent for cutting:

Plastic/Acrylic
Acetal and Nylon
Acrylic Stone
Acrylonitrile Butadiene Styrene (ABS)
Aluminum Composite Material (ACM)
Alupanel®
Corian
Coroplast®**
Corrugated Plastics* such as Correx Boards and Polypropylene
Crosslinked Polyethylene (XPE, PEX, XLPE)
Delrin
Dibond®
Epoxy
Expanded PVC
Extruded Acrylic
Foam Board
Fomex®
Gatorfoam®***
Hard Plastic

High Density Polyethylene (HDPE)
High Density Urethane (HDU Board)
High Impact Polystyrene (HIPS)
High Impact Polystyrene (HIPS) for digital printing
High Pressure Laminates (HPL)
Hydroxy-Terminated Polyether (HTPE)
King ColorCore® The Multi-Color Engravable Polymer Sheet.
Laminate

Low Density Polyethylene (LDPE)
LubX®
Lucite®
Mechanical/Engineered Plastics
Perspex® Cast Acrylic Sheet
Plexiglas®
Poly (methyl methacrylate) (PMMA)
Polycarbonate (Lexan™)†
Polyethylene Terephthalate Glycol-Modified (PETG / PET-G)
Polyoxymethylene (POM), also known as Acetal, Polyacetal and Polyformaldehyde.
Polystyrene (PS)
PVC
Sign Foam
Sintra PVC
Solid Surface
StarBoard® (King StarBoard ‘R’) High Density Polyethylene Sheet (HDPE)
Teflon®
Thermoplastic Polyolefin (TPO)
Trespa® Meteon®****
Ultra High Molecular Weight Polyethylene (UHMWPE)
Urethane
Vinyl Flooring
Wood

Corrugated Plastics such as Correx refers to a wide range of extruded twinwall plastic-sheet products produced from high-impact Polypropylene resin with a similar make-up to corrugated fiberboard. They are used in a variety of applications including boat building packaging signage outdoor advertising and the production of pet cages.

A soft plastic cardboard made with super soft super flexible PVC.

Gatorfoam® Foam Board a polystyrene foam board bonded between two layers of Luxcell® wood-fiber veneer.

Decorative high-pressure compact laminate (HPL) with an integral surface.

†Recommendation: Use the slowest suggested feed rates and the shortest bits necessary for cutting and routing Lexan™.

Benefits of Mirror-Finish:

Razor sharp cutting edge
Effortless chip removal
Helps prevent chip re-welding
Extends tool life

Exceptional cut quality
Dissipates heat well and

prevents melting

Maximum RPM:**35,000

Specifications

Direction	Down-Cut
(D) Diameter	4mm
(B) Cutting Height	20mm
(d) Shank	6mm
Overall Length (L)	64mm
Flutes	1

Other Sizes Available

Direction	(D) Diameter	(B) Cutting Height	(d) Shank	Overall Length (L)	Flutes	Tool No.
Up-Cut	1/16 (1.59mm)	1/4 (6.35mm)	1/8 (3.18mm)	2 (50.80mm)	1	51415
Up-Cut	1/16 (1.59mm)	1/4 (6.35mm)	1/4 (6.35mm)	2 (50.80mm)	1	51441
Down-Cut	1/16 (1.59mm)	1/4 (6.35mm)	1/8 (3.18mm)	2 (50.80mm)	1	51515
Up-Cut	2mm	6mm	3mm	50mm	1	51634
Up-Cut	2mm	8mm	2mm	50mm	1	57310
Up-Cut	2mm	8mm	6mm	64mm	1	57311
Up-Cut	3/32 (2.38mm)	1/4 (6.35mm)	1/8 (3.18mm)	2 (50.80mm)	1	51647
Up-Cut	3mm	12mm	3mm	64mm	1	51491
Down-Cut	3mm	12mm	6mm	50mm	1	51526
Up-Cut	3mm	8mm	3mm	50mm	1	57314
Up-Cut	3mm	8mm	6mm	64mm	1	57315
Up-Cut	3mm	12mm	6mm	64mm	1	57316
Up-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/8 (3.18mm)	2 (50.80mm)	1	51410
Up-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/8 (3.18mm)	2 (50.80mm)	1	51410-5
Up-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/4 (6.35mm)	2 (50.80mm)	1	51411
Up-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/4 (6.35mm)	2 (50.80mm)	1	51411-5
Up-Cut	1/8 (3.18mm)	1/4 (6.35mm)	1/4 (6.35mm)	2 (50.80mm)	1	51416
Up-Cut	1/8 (3.18mm)	1/4 (6.35mm)	1/4 (6.35mm)	2 (50.80mm)	1	51416-5
Up-Cut	1/8 (3.18mm)	3/4 (19.05mm)	1/8 (3.18mm)	2 (50.80mm)	1	51437
Up-Cut	1/8 (3.18mm)	1/4 (6.35mm)	1/8 (3.18mm)	2 (50.80mm)	1	51443
Up-Cut	1/8 (3.18mm)	5/8 (15.88mm)	1/4 (6.35mm)	2-1/2	1	51445
Up-Cut	1/8 (3.18mm)	3/4 (19.05mm)	1/4 (6.35mm)	2-1/2	1	51446-5
Down-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/8 (3.18mm)	2 (50.80mm)	1	51510
Down-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/4 (6.35mm)	2 (50.80mm)	1	51511
Down-Cut	1/8 (3.18mm)	1/2 (12.70mm)	1/4 (6.35mm)	2 (50.80mm)	1	51511-5
Down-Cut	1/8 (3.18mm)	5/16 (7.94mm)	1/4 (6.35mm)	1-1/2	1	51523
Up-Cut	5/32 (3.97mm)	9/16 (14.29mm)	1/4 (6.35mm)	2 (50.80mm)	1	51447
Down-Cut	5/32 (3.97mm)	9/16 (14.29mm)	1/4 (6.35mm)	2 (50.80mm)	1	51516
Up-Cut	4mm	12mm	4mm	64mm	1	51636
Up-Cut	4mm	20mm	4mm	64mm	1	57318
Up-Cut	4mm	20mm	6mm	64mm	1	57319
Up-Cut	4mm	30mm	4mm	64mm	1	57320
Up-Cut	3/16 (4.76mm)	5/8 (15.88mm)	3/16 (4.76mm)	2 (50.80mm)	1	51412
Up-Cut	3/16 (4.76mm)	5/8 (15.88mm)	1/4 (6.35mm)	2 (50.80mm)	1	51417
Up-Cut	3/16 (4.76mm)	5/8 (15.88mm)	1/4 (6.35mm)	2 (50.80mm)	1	51417-5
Up-Cut	3/16 (4.76mm)	1-1/4	1/4 (6.35mm)	3 (76.20mm)	1	51418
Up-Cut	3/16 (4.76mm)	5/8 (15.88mm)	1/4 (6.35mm)	2-1/2	1	51423
Up-Cut	3/16 (4.76mm)	7/8 (22.23mm)	1/4 (6.35mm)	2-1/2	1	51442
Up-Cut	3/16 (4.76mm)	3/8 (9.53mm)	3/16 (4.76mm)	2 (50.80mm)	1	51448
Up-Cut	3/16 (4.76mm)	3/8 (9.53mm)	1/4 (6.35mm)	2 (50.80mm)	1	51449
Down-Cut	3/16 (4.76mm)	5/8 (15.88mm)	3/16 (4.76mm)	2 (50.80mm)	1	51512
Down-Cut	3/16 (4.76mm)	5/8 (15.88mm)	1/4 (6.35mm)	2 (50.80mm)	1	51517
Down-Cut	3/16 (4.76mm)	3/8 (9.53mm)	3/16 (4.76mm)	2 (50.80mm)	1	51518
Up-Cut	5mm	16mm	6mm	64mm	1	57321
Up-Cut	5mm	30mm	5mm	64mm	1	57322
Up-Cut	7/32 (5.56mm)	3/4 (19.05mm)	1/4 (6.35mm)	2-1/2	1	51424
Up-Cut	6mm	20mm	6mm	64mm	1	51495
Up-Cut	6mm	30mm	6mm	75mm	1	51497
Up-Cut	6mm	38mm	6mm	75mm	1	51499
Up-Cut	6mm	16mm	6mm	63mm	1	51638
Up-Cut	6mm	12mm	6mm	64mm	1	57324
Down-Cut	6mm	30mm	6mm	76mm	1	57333
Up-Cut	1/4 (6.35mm)	1-3/8	1/4 (6.35mm)	3 (76.20mm)	1	51403
Up-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/4 (6.35mm)	2 (50.80mm)	1	51404
Up-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/4 (6.35mm)	2 (50.80mm)	1	51404-5
Up-Cut	1/4 (6.35mm)	1 (25.40mm)	1/4 (6.35mm)	2-1/2	1	51405
Up-Cut	1/4 (6.35mm)	1 (25.40mm)	1/4 (6.35mm)	2-1/2	1	51405-5
Up-Cut	1/4 (6.35mm)	1-1/4	1/4 (6.35mm)	3 (76.20mm)	1	51407
Up-Cut	1/4 (6.35mm)	1-1/16	1/4 (6.35mm)	3 (76.20mm)	1	51409
Up-Cut	1/4 (6.35mm)	1-1/2	1/4 (6.35mm)	3 (76.20mm)	1	51413
Up-Cut	1/4 (6.35mm)	5/8 (15.88mm)	1/4 (6.35mm)	2 (50.80mm)	1	51419
Up-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/4 (6.35mm)	2-1/2	1	51421
Up-Cut	1/4 (6.35mm)	3/8 (9.53mm)	1/4 (6.35mm)	2 (50.80mm)	1	51425
Up-Cut	1/4 (6.35mm)	7/8 (22.23mm)	1/4 (6.35mm)	2-1/2	1	51444
Down-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/4 (6.35mm)	2 (50.80mm)	1	51504
Down-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/2 (12.70mm)	2 (50.80mm)	1	51504-5
Down-Cut	1/4 (6.35mm)	1 (25.40mm)	1/4 (6.35mm)	2-1/2	1	51505
Down-Cut	1/4 (6.35mm)	1-1/4	1/4 (6.35mm)	3 (76.20mm)	1	51507
Down-Cut	1/4 (6.35mm)	1-1/4	1/4 (6.35mm)	3 (76.20mm)	1	51507-5
Down-Cut	1/4 (6.35mm)	1-1/2	1/4 (6.35mm)	3 (76.20mm)	1	51513
Down-Cut	1/4 (6.35mm)	1-1/2	1/4 (6.35mm)	3 (76.20mm)	1	51513-5
Down-Cut	1/4 (6.35mm)	3/8 (9.53mm)	1/4 (6.35mm)	2 (50.80mm)	1	51519
Down-Cut	1/4 (6.35mm)	3/4 (19.05mm)	1/4 (6.35mm)	2-1/2	1	51524
Up-Cut	1/4 (6.35mm)	2-1/4	1/4 (6.35mm)	3-3/4	1	51646
Up-Cut	8mm	25mm	8mm	64mm	1	57325
Up-Cut	3/8 (9.53mm)	1-1/8	3/8 (9.53mm)	3 (76.20mm)	1	51414
Up-Cut	3/8 (9.53mm)	3/4 (19.05mm)	3/8 (9.53mm)	3 (76.20mm)	1	51426
Up-Cut	3/8 (9.53mm)	1-5/8	3/8 (9.53mm)	3-1/2	1	51427
Up-Cut	3/8 (9.53mm)	5/8 (15.88mm)	3/8 (9.53mm)	2-1/2	1	51429
Down-Cut	3/8 (9.53mm)	3/4 (19.05mm)	3/8 (9.53mm)	3 (76.20mm)	1	51509
Down-Cut	3/8 (9.53mm)	1-1/8	3/8 (9.53mm)	3 (76.20mm)	1	51514
Up-Cut	10mm	30mm	10mm	76mm	1	57327
Up-Cut	10mm	35mm	10mm	76mm	—-	57328
Up-Cut	12mm	38mm	12mm	76mm	1	57329
Up-Cut	1/2 (12.70mm)	1-5/8	1/2 (12.70mm)	3-1/2	1	51428
Down-Cut	1/2 (12.70mm)	1-1/4	1/2 (12.70mm)	3 (76.20mm)	1	51529
Up-Cut	1/2 (12.70mm)	1-1/4	1/2 (12.70mm)	3 (76.20mm)	1	51645
Up-Cut	1/2 (12.70mm)	2 (50.80mm)	1/2 (12.70mm)	4 (101.60mm)	1	51648
–	–	–	1/4 (6.35mm)	–	—-	AMS-165
–	–	–	1/4 (6.35mm)	–	—-	AMS-167

Weight	0.06 lbs

Brand

Amana Tool

Amana Tool® is an industry leader for over 40 years specializing in industrial quality solid carbide, insert carbide and carbide-tipped cutting tools for the woodworking, plastics, aluminum, composite and metal industry. They provide many solutions for manufacturers, fabricators, display and cabinet professionals as well as hobbyists. Amana Tool’s full line of industrial-quality cutting tools includes saw blades, router bits, shaper cutters, boring bits and much more.

Need This Tool Customized?

Every machining application is different. If this tool is close to what you need but not an exact fit, General Cutting Tools can help modify it for your specific job, machine, material, or production requirement.

We work with CNC shops, industrial manufacturers, tool rooms, and production facilities to provide tool modifications that improve fit, function, performance, and efficiency. Whether you need a small adjustment or a more specialized cutting tool solution, our team can review your requirements and recommend the best option.

Custom tool modifications can help reduce setup time, improve accuracy, extend tool life, solve clearance issues, and support more consistent production results.

Common Tool Customization Options

Diameter and OD Modifications

We can modify tool diameters to better match your application requirements, including cutting diameter changes, OD modifications, pilot diameter adjustments, step diameters, and shank diameter modifications.

Bore Modifications for Saw Blades

Custom saw blade bore modifications are available for hole diameter changes, pinholes, mounting holes, and keyway cutouts to help match your machine setup and cutting requirements.

Length Adjustments

Tools can be modified for specific reach, clearance, or setup needs. This may include overall length changes, flute length adjustments, reduced neck sections, extended reach designs, or shortened tools for improved rigidity.

Shank Modifications

Shank modifications can help ensure the tool fits properly in your holder, spindle, or machine setup. Common options include shank diameter changes, flats, Weldon flats, reduced shanks, and custom holding requirements.

Radius, Chamfer, and Corner Changes

We can customize corner radius, chamfer angles, edge breaks, and other profile details to meet part print requirements or improve cutting performance.

Step Tool Modifications

For applications that require multiple diameters or operations in a single tool, we can create or modify step tools to help reduce tool changes and improve production efficiency.

Flute and Cutting Edge Adjustments

Depending on the tool and application, flute length, cutting edge geometry, end cutting features, relief angles, and cutting edge shape may be modified to improve chip evacuation, cutting action, and tool performance.

Regrinding and Resharpening

Many cutting tools can be reground or resharpened to restore performance, extend tool life, and reduce replacement costs.

Custom Profiles and Special Forms

For unique part features, we can help provide special forms, custom profiles, custom radii, counterbores, countersinks, keyseat cutters, form tools, and other application-specific tooling solutions.

Material-Specific Tool Adjustments

We can help modify or recommend tooling based on the material being machined, including aluminum, brass, bronze, plastics, stainless steel, hardened steel, cast iron, composites, and other industrial materials.

Have a Drawing, Sample, or Part Print?

Send us your print, sketch, CAD file, photo, tool number, sample, or application details. For the fastest quote, include the material being cut, quantity needed, required dimensions, tolerances, and any machine or holder requirements.

Coating Options

Tool coatings can be selected or added to improve wear resistance, heat resistance, lubricity, and performance in specific materials such as steel, stainless steel, aluminum, cast iron, and high-temperature alloys.

Request a Custom Tool Modification

Need this tool changed for your application? Contact General Cutting Tools today to discuss your custom tooling needs. We can help you find the right solution for your machine, material, and production goals.