No. 14 Drive Screws | McMaster-Carr

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EAR99

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Unified Standard Class 2A

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30,000 psi to 99,999 psi

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54 Products

Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws

The unique two-hole design inhibits tampering. These screws only turn with a drilled spanner driver, making them hard to force with other tools. Also known as pig-nose drives, their two contact points won't withstand much torque, so they're good for light duty tasks. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. Pan heads have a moderate height and width profile, offering a middle ground between narrower button heads and wider truss heads.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.

	Screws									Screwdriver Bits		Power Tool Bits
		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				1/4"-20

				1/4"	0.492"	0.144"	Fully Threaded	80,000	—	25	000000000	000000	00000000	00000	0000000	00000


				3/8"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	25	000000000	00000	00000000	0000	0000000	0000
				1/2"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	25	000000000	00000	00000000	0000	0000000	0000
				5/8"	0.492"	0.144"	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000
				3/4"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				1"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				1 1/4"	0.492"	0.144"	Fully Threaded	80,000	—	10	000000000	00000	00000000	0000	0000000	0000
				1 1/2"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
				2"	0.492"	0.144"	Fully Threaded	80,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
				3"	0.492"	0.144"	Partially Threaded	80,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000




						1/4"-28

						1/2"	0.492"	0.144"	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000


						3/4"	0.492"	0.144"	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000
						1"	0.492"	0.144"	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000




								M6 × 1 mm

								10 mm	11.99 mm	3.59 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000


								12 mm	11.99 mm	3.59 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000
								16 mm	11.99 mm	3.59 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000
								20 mm	11.99 mm	3.59 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000
								25 mm	11.99 mm	3.59 mm	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000

Tamper-Resistant Drilled Spanner Stainless Steel Truss Head Screws

These screws have a wide head that distributes weight and a two-hole design that deters tampering. They only turn with a drilled spanner driver, making them hard to force with other tools. Also known as pig-nose drives, their two contact points won't withstand much torque, so they're good for light duty tasks. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. Their wide head spreads out pressure without adding a washer to reduce the risk of crushing thin material, such as sheet metal.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.

	Screws									Screwdriver Bits		Power Tool Bits
		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				1/4"-20

				3/8"	0.573"	0.15"	Fully Threaded	70,000	—	25	000000000	000000	00000000	00000	0000000	00000


				1/2"	0.573"	0.15"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				3/4"	0.573"	0.15"	Fully Threaded	70,000	—	10	000000000	0000	00000000	0000	0000000	0000
				1"	0.573"	0.15"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				1 1/2"	0.573"	0.15"	Fully Threaded	70,000	—	10	000000000	00000	00000000	0000	0000000	0000




						5/16"-18

						3/4"	0.698"	0.183"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000


						1"	0.698"	0.183"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
						1 1/4"	0.698"	0.183"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
						1 1/2"	0.698"	0.183"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
						2"	0.698"	0.183"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
						2 1/2"	0.698"	0.183"	Partially Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000




								3/8"-16

								3/4"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000


								1"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
								1 1/4"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
								1 1/2"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000
								2"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	5	000000000	00000	00000000	0000	0000000	0000
								2 1/2"	0.823"	0.215"	Partially Threaded	70,000	ASME B18.6.3	5	000000000	00000	00000000	0000	0000000	0000
								3"	0.823"	0.215"	Fully Threaded	70,000	ASME B18.6.3	5	000000000	00000	00000000	0000	0000000	0000

Tamper-Resistant Drilled Spanner Stainless Steel Flat Head Screws

Image of Product. Front orientation. Contains MultipleImages. Flat Head Screws. Tamper-Resistant Drilled Spanner Stainless Steel Flat Head Screws.

The unique two-hole design deters tampering. These screws only turn with a drilled spanner driver, making them hard to force with other tools. Also known as pig-nose drives, their two contact points won't withstand much torque, so they're good for light duty tasks. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals.

Length is measured from the top of the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.

Standard Profile—Standard-profile heads are the most common choice for flat head screws.

Undercut Profile—About a third thinner than standard heads, the undercut profile fits into shallow holes in thin material. The thin head also has more threading on the shaft, so they're often used to keep short screws from coming loose.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.

	Screws											Screwdriver Bits		Power Tool Bits
				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				1/4"-20

				1/2"	82°	Undercut	0.477"	0.107"	Fully Threaded	70,000	ASME B18.6.3	25	000000000	000000	00000000	00000	0000000	00000


				5/8"	82°	Standard	0.507"	0.153"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				3/4"	82°	Standard	0.477"	0.153"	Fully Threaded	70,000	ASME B18.6.3	25	000000000	00000	00000000	0000	0000000	0000
				1"	82°	Standard	0.477"	0.153"	Fully Threaded	70,000	ASME B18.6.3	25	000000000	00000	00000000	0000	0000000	0000
				1 1/4"	82°	Standard	0.477"	0.153"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				1 1/2"	82°	Standard	0.477"	0.153"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				2"	82°	Standard	0.477"	0.153"	Fully Threaded	70,000	ASME B18.6.3	10	000000000	0000	00000000	0000	0000000	0000
				2 1/2"	82°	Standard	0.477"	0.153"	Partially Threaded	70,000	ASME B18.6.3	10	000000000	00000	00000000	0000	0000000	0000




						M6 × 1 mm

						12 mm	90°	Standard	11.00 mm	3.00 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000


						16 mm	90°	Standard	11.00 mm	3.00 mm	Fully Threaded	80,000	—	25	000000000	00000	00000000	0000	0000000	0000
						20 mm	90°	Standard	11.00 mm	3.00 mm	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000
						25 mm	90°	Standard	11.00 mm	3.00 mm	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000
						30 mm	90°	Standard	11.00 mm	3.00 mm	Fully Threaded	80,000	—	10	000000000	0000	00000000	0000	0000000	0000

Tamper-Resistant Drilled Spanner Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Drilled Spanner Stainless Steel Rounded Head Screws for Sheet Metal.

A two-hole drive deters tampering and a rounded head creates a finished look. Also known as pig-nose screws, these turn only with a drilled spanner driver. The two contact points won’t withstand much torque, so they’re best for light duty fastening. The pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. These screws resist corrosion.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws										Screwdriver Bits		Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Drill Bit Size, mm	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				No. 14 Screw Size

				3/4"	0.492"	0.144"	AB	No. 14	10	5.5	25	000000000	000000	00000000	00000	0000000	00000


				1"	0.492"	0.144"	AB	No. 14	10	5.5	10	000000000	0000	00000000	0000	0000000	0000
				2"	0.492"	0.144"	AB	No. 14	10	5.5	10	000000000	0000	00000000	0000	0000000	0000