Monster Bolts

6880 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.

Browse by category

Collections

View 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

Featured products

Popular right now

Browse 6880 products
M3 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M3 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 1.42
Metric - Short Arm Hex / Allen Keys, 6150 Black Alloy Steel

Metric - Short Arm Hex / Allen Keys, 6150 Black Alloy Steel

USD 0.55
M4 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M4 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 1.52
M5 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M5 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 1.69
M6 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M6 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 1.43
M8 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M8 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 2.48
M10 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black Oxide

M10 Button Head Socket Cap screws, 12.9 Alloy Steel w/ Black

USD 5.46
M12 Button Head Socket Cap screws, 12.9 Alloy Steel with Black Oxide

M12 Button Head Socket Cap screws, 12.9 Alloy Steel with Bla

USD 9.94
Metric Flat Washer, Stainless Steel DIN 125A (125 A) 18-8 / A2

Metric Flat Washer, Stainless Steel DIN 125A (125 A) 18-8 /

USD 0.58
Metric Nylon Insert Hex Lock Nuts - Stainless Steel DIN 985 18-8 / A2

Metric Nylon Insert Hex Lock Nuts - Stainless Steel DIN 985

USD 0.94
M3 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M3 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 0.79
M4 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M4 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 1.17
Metric Nylon Insert Hex Lock Nuts - DIN 985 Black Oxide Steel Class 8

Metric Nylon Insert Hex Lock Nuts - DIN 985 Black Oxide Stee

USD 1.40
M3 Socket Head Cap screws, Class 12.9 Alloy Steel w/ Black Oxide

M3 Socket Head Cap screws, Class 12.9 Alloy Steel w/ Black O

USD 1.37
M4 Socket Head Cap screws, Class 12.9 Alloy Steel w/ Black Oxide

M4 Socket Head Cap screws, Class 12.9 Alloy Steel w/ Black O

USD 1.38
M3 Phillips Pan Head Machine screws, Steel w/ Black Oxide and Oil DIN 7985A Coarse Thread

M3 Phillips Pan Head Machine screws, Steel w/ Black Oxide an

USD 0.98
M3 Socket Head Cap screws, Stainless Steel A2 (18-8)

M3 Socket Head Cap screws, Stainless Steel A2 (18-8)

USD 0.99
M4 Socket Head Cap screws, Stainless Steel A2 (18-8)

M4 Socket Head Cap screws, Stainless Steel A2 (18-8)

USD 1.48
M5 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M5 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 1.43
M6 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M6 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 1.80
M8 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M8 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 3.17
M10 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

M10 Button Head Socket Cap screws, Stainless Steel A2 (18-8)

USD 6.09
Metric Hex Nuts, Stainless Steel DIN 934 A2 / 18-8

Metric Hex Nuts, Stainless Steel DIN 934 A2 / 18-8

USD 0.65
Hex Serrated Flange Nuts, Zinc Plated Class 8 Alloy Steel Metric DIN 6923 / ISO 4161

Hex Serrated Flange Nuts, Zinc Plated Class 8 Alloy Steel Me

USD 0.85