When working on a project, you know how essential it is that the size of your materials matches exactly. That’s why we offer both metric and U.S. sizes for our screws, ranging from ¼-20 and 5mm to 8mm. Our hex cap screws also come in either alloy steel with black oxide or stainless steel A2, so you can choose which material makes the most sense for you. At Monster Bolts, we pride ourselves on selling accessible, affordable, and durable products that will help you complete your project. Shop now and experience the quality for yourself!
Bulk 3/8"-16 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $123.62
Bulk 7/16"-14 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $147.02
Bulk 1/2"-13 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $115.92
Bulk 5/8"-11 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $112.63
Bulk 3/4"-10 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $108.47
Bulk 7/8"-9 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $124.27
Bulk 1"-8 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $127.87
Bulk 1-1/8"-7 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $163.92
Bulk 1-1/4"-7 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $169.38
Bulk 1-1/2"-6 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized)
Sale priceFrom $165.59
Bulk 1/2"-13 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $206.88
Bulk 5/8"-11 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $169.92
Bulk 3/4"-10 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $156.64
Bulk 7/8"-9 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $175.45
Bulk 1"-8 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $155.80
Bulk 1-1/8"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $179.34
Bulk 1-1/4"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $194.29
Bulk 1-1/2"-6 Grade B Heavy Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $168.50
Bulk 5/8"-11 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $183.26
Bulk 3/4"-10 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $214.12
Bulk 7/8"-9 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $224.35
Bulk 1"-8 x 4-1/2" Grade B Heavy Hex Bolts (A307, Coarse, HDG, PT)
Sale price$297.83
Bulk 1-1/8"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $241.05
Bulk 1-1/4"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $197.15
Bulk 1-1/2"-6 Grade B Heavy Hex Bolts (A307, Coarse Thread, HDG Finish)
Sale priceFrom $174.91
Bulk 1/2"-13 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $110.91
Bulk 5/8"-11 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $112.09
Bulk 3/4"-10 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $111.56
Bulk 7/8"-9 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $117.97
Bulk 1"-8 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $119.72
Bulk 1-1/8"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $133.37
Bulk 1-1/4"-7 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $130.53
Bulk 1-1/2"-6 Grade B Heavy Hex Bolts (A307, Coarse Thread, Plain Finish)
Sale priceFrom $145.06
Bulk 1/4"-20 Grade 8 Hex Cap Screws (Coarse Thread, Alloy Steel, Plain)
Sale priceFrom $106.08
Bulk 1/4"-28 Grade 8 Hex Cap Screws (Fine Thread, Alloy Steel, Plain Finish)
Sale priceFrom $123.28
Bulk 1/4"-20 Grade 8 Hex Cap Screws (Zinc Yellow CR+6 Bake, UNC)
Sale priceFrom $125.38
Bulk 1/4"-28 Grade 8 Hex Cap Screws (Zinc Yellow, CR+6 Bake)
Sale priceFrom $145.42
Bulk 1/4"-20 UNC Hex Cap Screws (Coarse Thread, A2 18-8 Stainless Steel)
Sale priceFrom $84.05
Bulk 1/4"-28 UNF Hex Cap Screws (Fine Thread, A2 18-8 Stainless Steel)
Sale priceFrom $139.12
Bulk 1/4"-20 UNC Hex Cap Screws (Coarse Thread, 316 Marine Grade Stainless Steel)
Sale priceFrom $97.19
Bulk 1/4"-28 UNF Hex Cap Screws (Fine Thread, 316 Marine Grade Stainless Steel)
Sale priceFrom $122.71
Bulk 1/4"-20 Grade A Hex Bolts (A307, Coarse Thread, Low Carbon, Plain)
Sale priceFrom $61.48
Bulk 1/4"-20 Grade A Hex Bolts (A307, Coarse Thread, Zinc CR+3)
Sale priceFrom $64.89
Bulk 1/4"-20 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized / HDG)
Sale priceFrom $112.53
Bulk 1-3/4"-5 Grade 8 Hex Cap Screws (Plain, Coarse Alloy)
Sale priceFrom $167.85
Bulk 2"-4 1/2 Grade 8 Hex Cap Screws (Alloy Steel, Coarse, Plain Finish)
Sale priceFrom $161.56
1/4"-20 Grade 8 Indented Hex Flange Screws (Frame Bolts) – Black Phosphate & Oil
Sale priceFrom $2.53
5/16-18 Grade 8 Indented Hex Flange Screws (Frame Bolts) – Black Phosphate & Oil
Sale priceFrom $4.28