3-1/2 in Standard Machine Screws - Grainger Industrial Supply

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Standard Machine Screws

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These screws join metal objects together through existing tapped holes and are typically used in high-volume automotive or machinery assembly and repair because of their uniformity. They are smaller than most screws. Machine screws are identified by threading that remains the same size from the top of the screw to the bottom.

Pan Head Machine Screws

Pan head machine screws have a flat or slightly rounded top that gives a neat appearance on visible metal joints. They are used anywhere a larger screw head might get stuck or would appear out of place. These machine screws work best in materials that are thin or are not frequently accessed to avoid damage to their heads.

Plain Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Black Oxide Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Zinc Plated Steel

Phillips Drive

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Torx Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Combination Slotted/Phillips Drive Includes Pilot Point

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Black Oxide 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Advanced Corrosion Resistance 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain 316 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Brass

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Nylon

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain PEEK

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Polycarbonate

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Flat Head Machine Screws

These machine screws have deeply sunk heads with flat top surfaces for fastening flatly against sides of metal joints and equipment. These screws sit flush against the surface of panels and electrical components for a finished look.

Black Oxide Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Zinc Plated Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive Includes Nut

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Phillips Drive Includes Pilot Point

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Black Oxide 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Advanced Corrosion Resistance 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain 316 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Brass

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Nylon

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain PEEK

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Round Head Machine Screws

Round head machine screws have a slightly domed top for easy-access fastening to metal parts. They offer an attractive smooth finish and come in slotted or Phillips drive types.

Plain Stainless Steel

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Zinc Plated Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Combination Slotted/Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain 18-8 Stainless Steel

Phillips Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Brass

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Plain Nylon

Slotted Drive

Thread Size	Fastener Length	Head Width	Head Height	Drive Size	Tensile Strength	Empty column	Small	Empty column	Bulk
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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.

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Standard Machine Screws

Pan Head Machine Screws

Plain Steel

Phillips Drive

Black Oxide Steel

Phillips Drive

Zinc Plated Steel

Phillips Drive

Torx Drive

Slotted Drive

Plain Stainless Steel

Phillips Drive

Plain 18-8 Stainless Steel

Phillips Drive

Slotted Drive

Combination Slotted/Phillips Drive Includes Pilot Point

Black Oxide 18-8 Stainless Steel

Phillips Drive

Advanced Corrosion Resistance 18-8 Stainless Steel

Phillips Drive

Plain 316 Stainless Steel

Phillips Drive

Plain Brass

Slotted Drive

Plain Nylon

Phillips Drive

Slotted Drive

Plain PEEK

Phillips Drive

Slotted Drive

Plain Polycarbonate

Phillips Drive

Flat Head Machine Screws

Black Oxide Steel

Phillips Drive

Zinc Plated Steel

Phillips Drive

Slotted Drive

Slotted Drive Includes Nut

Plain 18-8 Stainless Steel

Phillips Drive

Phillips Drive Includes Pilot Point

Slotted Drive

Black Oxide 18-8 Stainless Steel

Phillips Drive

Advanced Corrosion Resistance 18-8 Stainless Steel

Phillips Drive

Plain 316 Stainless Steel

Phillips Drive

Plain Brass

Phillips Drive

Slotted Drive

Plain Nylon

Slotted Drive

Plain PEEK

Slotted Drive

Round Head Machine Screws

Plain Stainless Steel

Slotted Drive

Zinc Plated Steel

Phillips Drive

Slotted Drive

Combination Slotted/Phillips Drive

Plain 18-8 Stainless Steel

Phillips Drive

Slotted Drive

Plain Brass

Slotted Drive

Plain Nylon

Slotted Drive