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** Minimum order value: $100

Serving a wide array of industries from marine and mining to construction and electronics, our custom fasteners can be used for a broad variety of applications, including boilers, bridges, hydraulics, and machine tools. Offering the capability to work with a large number of materials up to four inches in diameter, such as nylon, plastics, brass and stainless steel, we can heat treat our custom fasteners to match our customer's unique requirements.

Offering a large variety of fastener, thread, bolt and screw head types, we can manufacture numerous styles of our custom fasteners based upon client specifications. And, we can also manufacture our products to numerous custom grades.

Providing multiple finishing options ranging from nickel, brass, and zinc plated to chrome, color coated, and galvanized, our fasteners can be built to meet either English, British or metric standards.we invite you to contact National Bolt & Nut to learn more about our premium customizable fasteners.

Custom Bolts/Fasteners

Unit of Measure


Industry Focus

N/A Agricultural Automotive Construction Electronics Energy Food Processing Heavy Machinery Marine Medical Mining Nuclear Oil, Gas, Petroleum Transportation

Intended Application

N/A Boilers Bridges Construction Machinery Engineered Plumbing Engines Hydraulics Impellers Jewelry Machine Tools Water Treatment Plants

Materials (Metals)

N/A Alloy Steels Aluminum Beryllium Brass Carbon Steel Inconel Magnesium Molybdenum Monel Nickel Silicone Bronze Stainless Steel Tin Titanium

Materials (Plastic Polymers)

N/A Nylon Various Plastics


N/A British English Metric

Hardening Specification

N/A Heat Treated to any custom Specification

Fastener Types

N/A *We can manufacture many custom fasteners to your specification*
Dowels & Pins
Hose Couplings Nails Rivets Screws Shackles Shaft Couplings Studs

Bolt Types

N/A *We can manufacture many custom bolts to your specification*
Bent Bent
  • Eye
  • Hook
  • J
  • U
Carriage Countersunk Elevator Flange Lag Plow T-Handle T-Slot

Bolt & Screw Head Types

N/A *We can manufacture many custom head types to your specification*
12-Point Button Fillister Flat Flat Undercut Headless Hexagon Indented Hexagon One-Way Oval Pan Pentagon Phillips Round Shoulder Socket Square Shoulder Trimmed Hex Truss

Thread Types

N/A *We can manufacture many custom thread types to your specification*
Drywall Machine Self-Drilling Self-Drilling Drive Screws Self-Tapping Type 17 Type 23 Type 25 Type A Type AB Type B Type F UNC UNF Wood


N/A *We can manufacture to many custom grades meeting your specification*
10.9 12.9 5 8 8.8

Bolt & Screw Drive Types

N/A *We can manufacture many custom drive types to your specification*
Hex/Hexagonal Phillips Six Lobe Slotted Socket Square Tamper Resistant Torx

Nut Types

N/A *We can manufacture many custom nut types to your specification*
Anchor Cap Castle Conical Coupling Finished Hex Flex Lock Heavy Hex Hex Flange Hex Jam Keps Nylon Insert Nylon Patch Nylon Pellet Semi-Finished Hex Serrated Hex Flange Slotted Hex Square Thumb Top Lock Wing


N/A Automotive Black Oxide Brass Plated Cadmium Chromate Chrome Color Coated Galvanized Nickel Plated Painted Phosphate Polished PTFE Silver Plated Teflon Zinc Plated

Industry Standards

N/A ANSI - American National Standards Institute
  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • DIN 934
  • DIN 970
ISO - International Organization for Standardization
  • ISO 4032
  • ISO 4033
UTS - Unified Thread Standard
  • UNC
  • UNF
  • UNEF
  • UNS
  • NPT
  • NPTF

Production Volume

N/A Low Volume to High Volume Max : Several Million units Min : 60

File Formats

N/A 3D ACIS Model File AutoCAD (DWG,DWZ) BMP - Bit Mapped Graphics Catia (CATDrawing,CATPart) Delcam (DGK, DMT) DXF - Drawing Interchange Format, or Drawing Exchange Format GIF - Graphics Interchange Format IGES - Initial Graphics Exchange Specification, ANSI file format. Inventor (IDW, IPT) IronCAD (ICD,ICS) JPG or JEPG - Joint Photographic Experts Group MasterCam (MDX, MC8, MC9, SET) PDF - Portable Document Format Pro-E or Pro/Engineer (DRW,PRT,XPR) SAT SolidWorks (SLDPRT,SLDDRW,SLDDRT) STEP - Standard for the Exchange of Product Model Data SurfCam (DSN) TIFF - Tagged Image File Format


N/A Max : M80 (4 in) Min : M2 (#4)