
Heavy Machinery
We serve manufacturers of excavators, front loaders, cranes, tractors and equipment for construction, mining and agriculture, where every component works long shifts under heavy load, impact, vibration and fatigue. Shafts, gears, pins, bushings, buckets and frames need materials of great strength and toughness, often heat treated or coated, able to withstand severe conditions without failing or deforming. At NAT MAC we supply alloy and high-strength steels, machinery-grade and tool steels, and abrasion-resistant grades, in the dimensions required for both new equipment and spare parts. We complement them with cutting services, specialty lubricants and technical advice to specify the ideal material, helping machinery run reliably and making maintenance and part replacement faster and more economical.
What is made in this industry?
Featured products
4140 SteelGeneral use
4340 SteelDemanding applications
8620 SteelCarburized gears
9840 SteelHigh performance
1018 SteelLow-carbon steel
1045 SteelMedium-carbon steel
1045 Chrome-plated BarHard-chrome plated ground bar
A36 SteelGeneral-purpose structural plate
A572 SteelHigh-strength low-alloy
S7 SteelShock resistant
1.2714 SteelHot work
6061 aluminumStructures and precision machining
SAE 660 BronzeGeneral-purpose bearing bronze
SAE 68 BronzeHigh-strength aluminum bronze
C36000 BrassHigh-machinability brass
Nylon M naturalCast polyamide 6
Nylon SL blackAnti-friction cast polyamide 6
Nylon HS blueCast polyamide 6 with UV and heat protection
Acetal (POM)High-stiffness, dimensionally stable polyacetal
UHMW Polyethylene PE 1000UHMWPE with maximum abrasion and impact resistance
HMW Polyethylene PE 500Impact- and wear-resistant HMWPE
Teflon (PTFE)Non-stick, chemically inert fluoropolymer
Polycarbonate (PC)Transparent thermoplastic with extremely high impact resistance
PET PolyesterSemi-crystalline polyethylene terephthalate, rigid and highly stable
CeloronPhenolic canvas laminate, mechanical-electrical grade
Primalloy™Starrett bi-metal band saw blade with Extended Life (EXT) treatment for maximum fatigue life.
Intenss™Starrett M42 bi-metal band saw blade with a strong tooth geometry for workshops and maintenance.
Intenss™ PROStarrett full-line bi-metal band saw blade for production cutting of ferrous and non-ferrous materials.
Versatix™ MPStarrett bi-metal band saw blade with a geometry developed for structural materials.
NATCUT™ M42-PM42 bi-metal band saw blade with pointed tooth for general-purpose cutting.
NATCUT™ M42-TM42 bi-metal band saw blade with tensile tooth for hollow sections and structural shapes.
NATCUT™ M42-HM42 bi-metal band saw blade with turtle-back (H) tooth for heavy loads and bundle cutting.
NATCUT™ M51-PPowder-metallurgy M51 bi-metal band saw blade with pointed tooth for high-hardness materials.
NATCUT™ M51-TM51 bi-metal band saw blade with tensile tooth for structural shapes and high-hardness materials.
Advanz™ MC7Starrett carbide band saw blade with progressive ground trapezoidal tooth (7 chips) for difficult steels.
Advanz™ CSStarrett triple-chip carbide band saw blade with negative rake for hardened materials.
Advanz™ TSStarrett carbide band saw blade with triple chip geometry and aggressive rake angle, general purpose.
CONDACUT®Specialty lubrication for precision cutting and machining
MECAGREEN®Plant-based water-soluble machining fluids
POLYBIO®Soluble oils for multi-metal machining and grinding
CONDAFORGE®Water-based graphite lubricants for hot and warm forging
ORAFOR®Water-based synthetic lubricants for hot and warm forging
CalipersOutside, inside, depth and step measurement, with digital or vernier reading.
MicrometersHigh-precision outside measurement, with carbide faces and electronic models.
Inside and depth gagesDepth of holes, slots and steps.
Indicators and dial gagesDial and digital indicators for tolerance verification.
Bore gagesInside diameter measurement, including 3-point AccuBore.
SquaresSquareness and right-angle verification in the shop.
Rules and parallelsLayout, alignment and reference surfaces.
Protractors and angle gagesPrecise angle measurement and layout.
Dividers and layout toolsLayout, dimension transfer and long distances.
Height gagesVertical layout and measurement on a granite surface plate.
Hardness testersPortable and bench hardness testing.
Thickness and coating gagesWall and coating thickness
Surface roughness testersRoughness measurement (Ra, Rz…)
M1® LubricantMulti-purpose oil that cleans, penetrates, lubricates and protects against corrosion.










