Monster Bolts

7228 products ★ 5.0

Monster Bolts is your top choice for both metric nuts and US sizing. Shop now for a great selection of nuts and washers, screws, bolts, concrete anchors & more.

Monster Bolts

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All Pan Head Machine Screws Pan Head Machine Screws (Inch) – Phillips Drive Flat Head Socket Cap Screws (Inch) – 82° Countersink Metric Flat Socket Cap Screws - Stainless & 12.9 Alloy Button Head Socket Cap Screws - Stainless & 12.9 Alloy Socket Head Cap Screws — Metric & Inch (Allen / Hex Drive) Set / Grub Screws - Stainless & 45H Alloy Steel Button Head Socket Cap Screws (Inch) Socket Head Cap Screws - (Inch / Allen) Socket Set Screws (Inch) – Cup Point Inch - Nuts and Washers Allen Wrenches / Hex Keys - Monster Bolts Nuts and Locking Nuts Best Selling Products Newest Products Phillips Flat Head Machine Screws Metric Flat Head Socket Cap Screws - DIN 7991 Metric Socket Head Cap Screws - DIN 912 Metric Button Head Socket Cap Screws - ISO 7380 Metric Socket Set Screws (Cup Point) - DIN 916 Hex Bolts Low Head Socket Cap - Stainless & 10.9 Alloy Grade 5 Titanium Socket Screws All Metric Nuts and Washers Washers and Locking Washers Inch - Drill Bits, Hex Keys and Driver Bits Metric Hex Keys & Driver Bits Hex Cap Screws / Tap Bolts (Inch) – Grade 8 & Stainless Metric Hex Cap Screws – A2 Stainless M4–M10 & 10.9 Black Alloy (M6, M8) Metric Phillips Pan Head Machine Screws – DIN 7985 Metric Phillips Flat Head Machine Screws – DIN 965 Metric Low Head Socket Cap Screws - DIN 7984 Low Head Socket Cap Screws (Inch) Flat Washers Split Lock Washers Hex Nuts Nylon Insert Locknuts Flange Nuts A4 (316) Marine Grade Stainless Steel, Screws, Nuts and Washers Socket Screws — Allen / Hex Drive Fasteners (Inch, ASME B18.3) Star / 6-Lobe Fasteners Sheet Metal Screws (Inch) – Self-Drilling & Self-Tapping Deck / Wood Screws Screwdriver Bits Monster Bolts Metric Fasteners – Screws, Bolts, Nuts, and Washers Tek Screws | Hex-Washer Head Drill-Point Screws Tek roofing Screws | Hex-Washer Head w EPDM Bonded sealing washer, Drill-Point Screws Metric Hex Nuts - DIN 934 Metric Nylon Insert Lock Nuts (Nylock) – DIN 985 Metric Flat Washers – DIN 125A
1/4"-20 Hex Cap Bolts / screws Grade 8 Black Alloy Steel

1/4"-20 Hex Cap Bolts / screws Grade 8 Black Alloy Steel

USD 1.7
1/4"-20 Grade 8 Indented Hex Flange Screws (Frame Bolts) – Black Phosphate & Oil

1/4"-20 Grade 8 Indented Hex Flange Screws (Frame Bolts) – B

USD 2.53
1/4"-20 Stainless Steel Hex Cap Bolts / screws, 18-8 (A2)

1/4"-20 Stainless Steel Hex Cap Bolts / screws, 18-8 (A2)

USD 1.99
1/4"-20 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Yellow

1/4"-20 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Yel

USD 1.68
5/16"-18 Hex Cap Bolts / screws Grade 8 Black Alloy Steel

5/16"-18 Hex Cap Bolts / screws Grade 8 Black Alloy Steel

USD 2.63
5/16-18 Grade 8 Indented Hex Flange Screws (Frame Bolts) – Black Phosphate & Oil

5/16-18 Grade 8 Indented Hex Flange Screws (Frame Bolts) – B

USD 4.28
5/16"-18 Stainless Steel Hex Cap Bolts / screws 18-8 (A2)

5/16"-18 Stainless Steel Hex Cap Bolts / screws 18-8 (A2)

USD 3.08
5/16"-18 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Yellow

5/16"-18 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Ye

USD 2.13
3/8"-16 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Yellow

3/8"-16 Hex Cap Bolts / screws Grade 8 Alloy Steel, Zinc-Yel

USD 2.74
1/4"-20 L9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

1/4"-20 L9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3

USD 29.7
1/4"-28 L9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3 (Fine Thread, Made in U.S.A.)

1/4"-28 L9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3

USD 32.67
5/16"-18 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

5/16"-18 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Z

USD 49.54
5/16"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

5/16"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zin

USD 58.08
3/8"-16 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

3/8"-16 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zi

USD 65.28
3/8"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

3/8"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc

USD 90.82
7/16"-14 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

7/16"-14 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Z

USD 81.92
7/16"-20 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

7/16"-20 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zin

USD 87.42
1/2"-13 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

1/2"-13 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zi

USD 87.44
1/2"-20 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

1/2"-20 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc

USD 108.56
9/16"-12 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

9/16"-12 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Z

USD 72.86
9/16"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

9/16"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zin

USD 96.46
5/8"-11 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

5/8"-11 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zi

USD 78.77
5/8"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

5/8"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc

USD 92.16
3/4"-10 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

3/4"-10 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zi

USD 135.44