Looking to source high-volume, cost-effective US / Inch Machine Screws? Our bulk selection covers a wide range of options—flat head machine screws (in both 100° and 82° head styles) and pan head machine screws—available in zinc-coated steel, A2 stainless, and A4 stainless. Choose from Phillips or Torx (star / 6-lobe) drive styles to best suit your manufacturing, repair, or industrial project needs.
At Monster Bolts, we’re committed to delivering both quality and affordability. Our bulk pricing ensures major savings on large orders, while our knowledgeable team stands ready to assist with product selection.
Need smaller quantities? Click here to explore our standard US Machine Screws listings. Choose MonsterBULKS for a streamlined purchasing process and reliable performance on every job.
Please note: Shipping for bulk orders is a bit slower than our standard shipping.
Bulk 1/4"-20 Phillips Flat Head Machine Screws – Steel Black Oxide
Sale priceFrom $174.90
Bulk 5/16"-18 Phillips Flat Head Machine Screws – Steel Black Oxide
Sale priceFrom $308.10
Bulk #2-56 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $633.60
Bulk #4-40 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $451.05
Bulk #6-32 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $591.60
Bulk #8-32 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $495.45
Bulk #10-24 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $286.35
Bulk #10-32 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $463.50
Bulk 1/4"-20 6-Lobe Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $311.85
Bulk #2-56 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $214.80
Bulk #4-40 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $170.40
Bulk #6-32 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $200.10
Bulk #8-32 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $94.65
Bulk #10-24 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $198.45
Bulk #10-32 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $166.05
Bulk 1/4"-20 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $154.50
Bulk 5/16"-18 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $269.55
Bulk 3/8"-16 6-Lobe Pan Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $349.20
Bulk 5/16"-18 6-Lobe Pan Head Machine Screws – 18-8 Stainless Steel
Sale priceFrom $214.95
Bulk 3/8"-16 6-Lobe Pan Head Machine Screws – 18-8 Stainless Steel
Sale priceFrom $322.95
Bulk 2-56 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $234.00
Bulk 4-40 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $221.25
Bulk 6-32 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $172.35
Bulk 8-32 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $166.05
Bulk 10-24 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $115.20
Bulk 10-32 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $152.85
Bulk 12-24 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $255.00
Bulk 1/4"-20 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $76.35
Bulk 1/4"-28 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $222.00
Bulk 5/16"-18 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $176.70
Bulk 3/8"-16 Phillips Truss-Head Machine Screws – Zinc-Plated Steel | Fully Threaded
Sale priceFrom $207.30
Bulk 4-40 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $225.90
Bulk 6-32 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $213.75
Bulk 8-32 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $201.60
Bulk 10-24 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $250.05
Bulk 10-32 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $166.50
Bulk 1/4"-20 Phillips Truss-Head Machine Screws – 18-8 Stainless Steel | Fully Threaded
Sale priceFrom $127.35
Bulk #6-32 6-Lobe Truss Head Machine Screws – Zinc-Plated Steel
Sale priceFrom $386.55
Bulk #2-56 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $425.25
Bulk #4-40 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $243.75
Bulk #6-32 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $210.75
Bulk #8-32 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $148.65
Bulk #10-24 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $173.25
Bulk #10-32 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $200.85
Bulk #12-24 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $270.00
Bulk 1/4"-20 Phillips Pan Head Machine Screws – Steel Black Oxide
Sale priceFrom $188.10
Bulk 5/16"-18 Phillips Pan Head Machine Screws – Black Oxide Steel
Sale priceFrom $261.90
Bulk #0-80 Phillips Pan Head Machine Screws – 18-8 Stainless Steel
Sale priceFrom $149.85