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Fasteners Information

Below is a list of the types of fasteners available, please note we do not sell all of the types or materials, just the ones you will normally find on your bike.

Types of Bolt

Hex Head Bolts

Machine Screws

Shoulder Bolts

Socket Cap Screws

Socket Set "Grub" Screws

Square Head Bolts

Carriage Bolts

Types of Screws

Deck Screw

Hex Lag Screws

Self-Drilling Screws

Sheet Metal Screws

Wood Screws

Types of Nuts

Cap Nuts

Castle Nuts

Coupling Nuts

Flange Serrated Nuts

Hex Finish Nuts

Hex Jam Nuts

Heavy Hex Nuts

Hex Machine Nuts

Hex Machine Nuts Small Pattern

Keps-K Lock Nuts

Knurled Thumb Nuts

Nylon Hex Jam Nuts

Nylon Insert Lock Nuts

Prevailing Torque Lock Nuts

Square Nuts

Structural Heavy Hex Nuts


Break Away or Shear Nuts

Tri-Groove Nuts

Wing Nuts

Types of Washers

Backup Rivet Washers

Belleville Conical Washers

Dock Washers

Fender Washers

Fender Washers - Extra Thick

Finishing Cup Washers

Flat Washers

Flat Washers - Extra Thick

Lock Washers - Split Ring

Lock Washers - High Collar

Lock Washers - External Tooth

Lock Washers - Internal Tooth

NAS Washers

Neoprene EPDM Washers

Structural Washers

Square Washers

Types of Material


Stainless Steel

Bronze & Brass



Non Metallic






Grades used

Imperial Steel

Grade 2 - Low or medium carbon steel -Standard steel grade for hardware; may have a manufacturer’s mark ot unmarked

Grade 5 - Medium carbon steel, quenched and tempered - also known as grade F, and is used in automotive applications.  Bolts made from grade 5 steel feature 3 radial line heads.

Grade 8 - Medium carbon alloy steel, quenched and tempered- Bolts are harder than grade 5 and are used in demanding applications such as automotive suspensions and high stress environments. feature 6 radial line heads.

Alloy Steel - Grade A325 Carbon or Alloy Steel with or without Boron -  Heat treated for extra strength, distinguished by their gray black finish.

Metric Steel

Class 8.8 - Medium carbon steel, quenched and tempered Sizes <16mm Proof Load MPa 580 - Yield Strength MPa 640 - Tensile Strength 800

Class 8.8 - Medium carbon steel, quenched and tempered Sizes >16mm to 72mm Proof Load MPa 600- Yield Strength MPa 660 - Tensile Strength 830

Class 10.9 Alloy steel, quenched and tempered Sizes 5mm - 100mm Proof Load MPa 830- Yield Strength MPa 940 - Tensile Strength 1040

Class 12.9 Alloy steel, quenched and tempered Sizes 1.6mm - 100mm Proof Load MPa 970- Yield Strength MPa 1100 - Tensile Strength 1220


Stainless markings vary. Most stainless is non-magnetic. Usually stamped A2-70. A4-70, A4-80

A2-70 - Tensile Strength min 700 -  Yield Strength 0.2% Proof (MPa) min 450
A4-70 - Tensile Strength min 700 -  Yield Strength 0.2% Proof (MPa) min 450

A4-80 - Tensile Strength min 800 -  Yield Strength 0.2% Proof (MPa) min 600

High Grade Stainless 17-4 PH is a precipitation hardening martensitic stainless

17-4 H1150 - Tensile Strength min 135,000 -  Yield Strength 0.2% Proof (PSI) min 105,000

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