Made in USA Fasteners & USA-Machined Boat Rigging – Monster Bolts
124 products
Showing 1 - 48 of 124 products
Discover Monster Bolts’ selection of Made in USA fasteners and USA-machined boat rigging hardware. This collection highlights American-manufactured stainless and alloy steel components—hex cap screws (ASTM F593), socket screws, nuts, washers, and marine-grade hardware—chosen for consistency, durability, and reliable performance.
Built for industrial, marine, and precision applications, these parts deliver tight tolerances, dependable materials, and fast shipping from Florida. Looking for rigging parts? Explore our USA-machined cable & rigging components.
Showing 1 - 48 of 124 products
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1/2"-13 Socket Head Cap Screws – 18-8 Stainless Steel – USA Made – Monster Bolts
Sale priceFrom $32.25


3/8"-16 Socket Head Cap Screws – 18-8 Stainless Steel – USA Made – Monster Bolts
Sale priceFrom $22.07


5/16"-18 Socket Head Cap Screws – 18-8 Stainless Steel – USA Made – Monster Bolts
Sale priceFrom $21.29


1/4"-20 Socket Head Cap Screws – 18-8 Stainless Steel – USA Made – Monster Bolts
Sale priceFrom $20.20


Bulk 1"-8 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $292.91


Bulk 7/8"-9 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $305.73


Bulk 3/4"-10 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $165.16


Bulk 5/8"-18 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $647.87


Bulk 5/8"-11 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $232.61


Bulk 1/2"-13 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $111.93


Bulk 7/16"-20 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $193.33


Bulk 7/16"-14 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $147.53


Bulk 3/8"-24 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $462.71


Bulk 3/8"-16 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $212.43


Bulk 5/16"-24 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $295.33


Bulk 5/16"-18 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $247.14


Bulk 1/4"-20 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $276.45


Bulk #10-32 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $324.31


Bulk #10-24 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $317.19


Bulk #8-32 Socket Head Cap Screws – Alloy Steel, Black Oxide – USA Made – Monster Bolts
Sale priceFrom $297.06


Bulk 1/4"-20 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $460.54


Bulk 5/16"-18 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $449.33


Bulk 3/8"-16 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $397.17


Bulk 7/8"-9 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $357.82


Bulk 1/2"-13 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $376.19


Bulk 5/8"-11 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $384.55


Bulk 3/4"-10 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts
Sale priceFrom $390.82


Bulk 1/4"-20 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $125.28


Bulk 1/4"-28 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $143.84


Bulk 5/16"-18 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $147.46


Bulk 5/16"-24 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $160.55


Bulk 3/8"-16 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $138.54


Bulk 3/8"-24 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $165.49


Bulk 7/16"-14 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $165.99


Bulk 7/16"-20 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $196.05


Bulk 1/2"-13 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $140.68


Bulk 1/2"-20 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $161.67


Bulk 9/16"-12 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $165.24


Bulk 9/16"-18 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $177.00


Bulk 5/8"-11 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $131.83


Bulk 5/8"-18 Grade 8 Hex Cap Screws – Zinc Yellow CR+3, Made in USA – Monster Bolts
Sale priceFrom $152.15


Bulk 3/4"-10 Hex Cap Bolts / Screws Grade 8 Alloy Steel, Zinc-Yellow, Made in USA
Sale priceFrom $144.04


Bulk 7/8"-9 Hex Cap Bolts / Screws Grade 8 Alloy Steel, Zinc-Yellow, Made in USA
Sale priceFrom $161.27
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