Colony Machine
Colony Machine is a trusted name in Harley Davidson hardware kits, fasteners and precision engineered restoration components. Known for exact OEM style fitment, Colony produces bolts, washers, studs and mounting kits that match or exceed factory specifications. Their hardware is widely used in engine rebuilds, drivetrain service and complete motorcycle restorations thanks to consistent quality and accurate machining. From Twin Cam to Sportster and Shovelhead models, Colony parts offer a reliable solution for maintaining factory level performance and appearance.
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V-Twin - 37-8121 - Chrome Hex Nuts 5/16 inch-18
Colony Machine
$23.67V-Twin - 37-8121 - Chrome Hex Nuts 5/16 inch-18DescriptionChrome hex nut, nyloc, 5/16"-18 Unified National Course Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA ...$23.67 -
V-Twin - 37-8119 - Chrome Hex Nuts 1/4 inch-20
Colony Machine
$25.75V-Twin - 37-8119 - Chrome Hex Nuts 1/4 inch-20DescriptionChrome hex nut, nyloc, 1/4"-20 Unified national course Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA ...$25.75 -
V-Twin - 37-8117 - Chrome Hex Nuts 7/16 inch-20
Colony Machine
$25.33V-Twin - 37-8117 - Chrome Hex Nuts 7/16 inch-20DescriptionChrome hex nut standard, 7/16"-20 fine thread Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA TypeFine ...$25.33 -
V-Twin - 37-8116 - Chrome Hex Nuts 1/2 inch-20
Colony Machine
$30.78V-Twin - 37-8116 - Chrome Hex Nuts 1/2 inch-20DescriptionChrome hex nut standard, 1/2"-20 fine thread Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA TypeFine 2025...$30.78 -
V-Twin - 37-8115 - Chrome Hex Nuts 3/8 inch-24
Colony Machine
$23.67V-Twin - 37-8115 - Chrome Hex Nuts 3/8 inch-24DescriptionChrome hex nut standard, 3/8"-24 fine thread Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA TypeFine 2025...$23.67 -
V-Twin - 37-8114 - Chrome Hex Nuts 3/8 inch-16
Colony Machine
$26.49V-Twin - 37-8114 - Chrome Hex Nuts 3/8 inch-16DescriptionChrome hex nut standard, 3/8"-16 Unified National course Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA ...$26.49 -
V-Twin - 37-8113 - Chrome Hex Nuts 5/16 inch-24
Colony Machine
$21.86V-Twin - 37-8113 - Chrome Hex Nuts 5/16 inch-24DescriptionChrome hex nut standard, 5/16"-24 fine thread Fits:All ModelsAdditional Information OEM No.7918 UOM20 - PK ManufacturerColony OriginUSA ...$21.86 -
V-Twin - 37-8112 - Chrome Hex Nuts 5/16 inch-18
Colony Machine
$23.78V-Twin - 37-8112 - Chrome Hex Nuts 5/16 inch-18DescriptionChrome hex nut standard, 5/16"-18 Unified National Course Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA ...$23.78 -
V-Twin - 37-8111 - Chrome Hex Nuts 1/4 inch-28
Colony Machine
$11.86V-Twin - 37-8111 - Chrome Hex Nuts 1/4 inch-28DescriptionChrome hex nut standard, 1/4"-28 fine thread Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA TypeFine 2025...$11.86 -
V-Twin - 37-8110 - Hex Nuts 1/4 inch-20 Chrome
Colony Machine
$22.34V-Twin - 37-8110 - Hex Nuts 1/4 inch-20 ChromeDescriptionChrome hex nut, standard 1/4"-20 Unified National Course Fits:All ModelsAdditional Information UOM20 - PK ManufacturerColony OriginUSA ...$22.34 -
V-Twin - 37-6139 - Parkerized Hex Nuts 7/16 inch-20
Colony Machine
$21.44V-Twin - 37-6139 - Parkerized Hex Nuts 7/16 inch-20DescriptionParkerized jam nuts from Colony motorcycle products have a thread size of 7/16"-20 N.F. x 3/8" x 3/4", and are used for the auxiliary...$21.44 -
V-Twin - 37-6138 - Rear Brake Pivot Lever Stud Nut Parkerized
Colony Machine
$21.52V-Twin - 37-6138 - Rear Brake Pivot Lever Stud Nut ParkerizedDescriptionParkerized rear brake pivot lever stud nut has a thread size of 1/2"-20 N/F x 3/8" x 3/4". Fits:UL 1937-1948EL 1936-1940FL...$21.52 -
V-Twin - 37-6137 - Rear Brake Pivot Lever Stud Nut Chrome
Colony Machine
$22.24V-Twin - 37-6137 - Rear Brake Pivot Lever Stud Nut ChromeDescriptionChrome rear brake pivot lever stud nut has a thread size of 1/2"-20 N/F x 3/8" x 3/4". Fits:UL 1937-1948EL 1936-1940FL...$22.24 -
V-Twin - 37-4090 - Fillister Head Screw 12-24 x 7/8 inch
Colony Machine
$24.60V-Twin - 37-4090 - Fillister Head Screw 12-24 x 7/8 inchDescriptionFillister head screw measures 12-24 x 7/8" and features a parkerized finish, National Coarse.Sold as a pack of 10. Fits:All...$24.60 -
Out of stock
V-Twin - 37-4089 - Flexloc Nuts 3/8 inch-16
Colony Machine
$23.87V-Twin - 37-4089 - Flexloc Nuts 3/8 inch-16DescriptionReplica parkerized flexloc nuts measure 3/8"-16, National Coarse.Sold as a pack of 5. Fits:All modelsAdditional Information OEM No.7778 UOM5 -...$23.87 -
Out of stock
V-Twin - 37-4088 - Fillister Head Screw 10-24 x 5/8 inch
Colony Machine
$23.87V-Twin - 37-4088 - Fillister Head Screw 10-24 x 5/8 inchDescriptionFillister head screw measures 10-24 x 5/8" and features a parkerized finish, National Coarse.Sold as a pack of 10. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4087 - Hexagon Nuts 3/8 inch-24 x 21/64 inch x 9/16 inch
Colony Machine
$23.87V-Twin - 37-4087 - Hexagon Nuts 3/8 inch-24 x 21/64 inch x 9/16 inchDescriptionReplica parkerized hexagon nuts measure 3/8"-24 x 21/64" x 9/16" long, National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4086 - Hexagon Nuts 1/2 inch-13
Colony Machine
$23.87V-Twin - 37-4086 - Hexagon Nuts 1/2 inch-13DescriptionReplica parkerized hexagon nuts measure 1/2"-13.Sold as a pack of 5. Fits:All modelsAdditional Information OEM No.7918 UOM5 - PK ...$23.87 -
Out of stock
V-Twin - 37-4085 - Castle Nut 7/16 inch-20 x 29/64 inch x 5/8 inch
Colony Machine
$23.87V-Twin - 37-4085 - Castle Nut 7/16 inch-20 x 29/64 inch x 5/8 inchDescriptionReplica parkerized castle nuts measure 7/16"-20 x 29/64" x 5/8", National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4084 - Flexloc Nuts 5/16 inch-24
Colony Machine
$23.87V-Twin - 37-4084 - Flexloc Nuts 5/16 inch-24DescriptionReplica parkerized flexloc nuts measure 5/16"-24, National Fine.Sold as a pack of 10. Fits:All modelsAdditional Information OEM No.7725 UOM10...$23.87 -
Out of stock
V-Twin - 37-4083 - Hexagon Nuts 1/2 inch-20 x 7/32 inch x 7/8 inch
Colony Machine
$23.87V-Twin - 37-4083 - Hexagon Nuts 1/2 inch-20 x 7/32 inch x 7/8 inchDescriptionReplica parkerized hexagon nuts measure 1/2"-20 x 7/32" x 7/8" long, National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4082 - Parkerized Hex Nuts 7/16 inch-20 x 7/16 inch x 3/4 inch
Colony Machine
$23.87V-Twin - 37-4082 - Parkerized Hex Nuts 7/16 inch-20 x 7/16 inch x 3/4 inchDescriptionReplica parkerized hexagon nuts measure 7/16"-20 x 7/16" x 3/4", National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4081 - Hexagon Nuts 5/16 inch-18 x 3/16 inch x 9/16 inch
Colony Machine
$23.87V-Twin - 37-4081 - Hexagon Nuts 5/16 inch-18 x 3/16 inch x 9/16 inchDescriptionReplica parkerized hexagon nuts measure 5/16"-18 x 3/16" x 9/16" long, National Coarse.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4080 - 1/4 inch-28 x 1/2 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4080 - 1/4 inch-28 x 1/2 inch Round Head Screw ParkerizedDescriptionRound head screw measures 1/4"-28 x 1/2" and features a parkerized finish, National Fine.Sold as a pack of 10. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4079 - Castellated Hexagon Nuts 1/2 inch-20 x 35/64 inch x 7/8 inch
Colony Machine
$23.87V-Twin - 37-4079 - Castellated Hexagon Nuts 1/2 inch-20 x 35/64 inch x 7/8 inchDescriptionReplica parkerized castellated hexagon nuts measure 1/2"-20 x 35/64" x 7/8" long, National Fine.Sold as a...$23.87 -
Out of stock
V-Twin - 37-4078 - 8-32 x 1/2 inch Flat Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4078 - 8-32 x 1/2 inch Flat Head Screw ParkerizedDescriptionFlat head screw measures 8-32 x 1/2" and features a parkerized finish, National Coarse.Sold as a pack of 10. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4077 - 3/8 inch-24 x 2-1/8 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4077 - 3/8 inch-24 x 2-1/8 inch Round Head Screw ParkerizedDescriptionRound head screw measures 3/8"-24 x 2-1/8" and features a parkerized finish, National Fine.Sold as a pack of 10...$23.87 -
Out of stock
V-Twin - 37-4076 - 3/8 inch-24 x 1-3/8 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4076 - 3/8 inch-24 x 1-3/8 inch Round Head Screw ParkerizedDescriptionRound head screw measures 3/8"-24 x 1-3/8" and features a parkerized finish, National Fine.Sold as a pack of 10...$23.87 -
Out of stock
V-Twin - 37-4075 - 3/8 inch-24 x 1-1/8 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4075 - 3/8 inch-24 x 1-1/8 inch Round Head Screw ParkerizedDescriptionRound head screw measures 3/8"-24 x 1-1/8" and features a parkerized finish, National Fine.Sold as a pack of 10...$23.87 -
Out of stock
V-Twin - 37-4074 - 5/16 inch-24 x 1/2 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4074 - 5/16 inch-24 x 1/2 inch Round Head Screw ParkerizedDescriptionRound head screw measures 5/16"-24 x 1/2" and features a parkerized finish, National Fine.Sold as a pack of 10...$23.87 -
Out of stock
V-Twin - 37-4073 - 3/8 inch-24 x 3.358 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4073 - 3/8 inch-24 x 3.358 inch Round Head Screw ParkerizedDescriptionRound head screw measures 3/8"-24 x 3.358" and features a parkerized finish, National Fine.Sold as a pack of 5...$23.87 -
Out of stock
V-Twin - 37-4072 - 3/8-24 x 2.640 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4072 - 3/8-24 x 2.640 inch Round Head Screw ParkerizedDescriptionRound head screw measures 3/8"-24 x 2.640" and features a parkerized finish, National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4071 - 10-32 x 5/8 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4071 - 10-32 x 5/8 inch Round Head Screw ParkerizedDescriptionRound head screw measures 10-32 x 5/8" and features a parkerized finish.Sold as a pack of 10. Fits:All modelsAdditional...$23.87 -
Out of stock
V-Twin - 37-4070 - 10-24 x 3/8 inch Round Head Screw Parkerized
Colony Machine
$23.87V-Twin - 37-4070 - 10-24 x 3/8 inch Round Head Screw ParkerizedDescriptionRound head screw measures 10-24 x 3/8" and features a parkerized finish, National Coarse.Sold as a pack of 10. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4069 - Fillister Head Screw 8-32 x 5/16 inch
Colony Machine
$23.87V-Twin - 37-4069 - Fillister Head Screw 8-32 x 5/16 inchDescriptionFillister head screw measures 8-32 x 5/16" and features a parkerized finish, National Coarse.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4068 - Hexagon Nuts 1/2 inch-20 x 15/32 inch x 1 inch
Colony Machine
$23.87V-Twin - 37-4068 - Hexagon Nuts 1/2 inch-20 x 15/32 inch x 1 inchDescriptionReplica parkerized hexagon nuts measure 1/2"-20 x 15/32" x 1", National Fine.Sold as a pack of 5. Fits:All modelsAdditional...$23.87 -
Out of stock
V-Twin - 37-4067 - Hexagon Nuts 7/16 inch-18 x 1/4 inch x 11/16 inch
Colony Machine
$23.87V-Twin - 37-4067 - Hexagon Nuts 7/16 inch-18 x 1/4 inch x 11/16 inchDescriptionReplica parkerized hexagon nuts measure 7/16"-18V x 1/4" x 11/16".Sold as a pack of 5. Fits:All modelsAdditional...$23.87 -
Out of stock
V-Twin - 37-4066 - Hexagon Nuts 7/16 inch-20 x 3/8 inch x 11/16 inch
Colony Machine
$23.87V-Twin - 37-4066 - Hexagon Nuts 7/16 inch-20 x 3/8 inch x 11/16 inchDescriptionReplica parkerized hexagon nuts measure 7/16"-20 x 3/8" x 11/16", National Fine.Sold as a pack of 5. Fits:All...$23.87 -
Out of stock
V-Twin - 37-4065 - Hexagon Nuts 3/8 inch-24 x 1/4 inch x 5/8 inch
Colony Machine
$19.66V-Twin - 37-4065 - Hexagon Nuts 3/8 inch-24 x 1/4 inch x 5/8 inchDescriptionReplica parkerized hexagon nuts measure 3/8"-24 x 1/4" x 5/8", National Fine.Sold as a pack of 5. Fits:All modelsAdditional...$19.66 -
Out of stock
V-Twin - 37-4064 - Hexagon Nuts 5/16 inch-24 x 17/64 inch x 7/16 inch
Colony Machine
$19.66V-Twin - 37-4064 - Hexagon Nuts 5/16 inch-24 x 17/64 inch x 7/16 inchDescriptionReplica parkerized hexagon nuts measure 5/16"-24 x 17/64" x 7/16", National Fine.Sold as a pack of 5. Fits:All...$19.66
Colony Machine – Harley Davidson Hardware Kits, Fasteners & Restoration Components
Colony Machine has been a leading supplier of Harley Davidson hardware and fastener kits for decades, earning a strong reputation among builders, mechanics and restoration experts. Every component is produced with strict quality control, offering precise fitment that replicates or improves upon original factory hardware. Their large catalog includes bolt assortments, acorn nuts, engine studs, brake hardware, pulley mount kits and many other Harley specific fasteners, making them a top choice for riders who want dependable components that install easily and stand up to long term use.
The brand supports a wide range of Harley platforms including Twin Cam, Milwaukee Eight, Sportster, Shovelhead, Panhead, Evolution and classic K model engines. Popular offerings include primary cover bolt kits, rocker cover bolts, rear pulley hardware, exhaust stud and nut sets, magnetic oil tank drain plugs, gas tank mount kits and head bolt sets. Riders can choose from chrome, cadmium or parkerized finishes to match a period correct restoration or upgrade to a cleaner, more polished look. Their consistent sizing and machining accuracy make them a trusted option for avoiding alignment issues and ensuring proper torque across all components.
Colony Machine products are especially valuable for restoration, repair, and long term maintenance because they remove the uncertainty that comes with old or mismatched hardware. Their emphasis on material strength, thread precision, and manufacturing consistency ensures secure installation whether you are rebuilding a Shovelhead top end, replacing a Sportster rocker shaft plug or updating a touring bike primary cover. With thousands of Harley dedicated fasteners available, Colony remains one of the most reliable sources for high quality hardware that keeps motorcycles running strong and looking factory correct.