13 mm Drive Screws | McMaster-Carr

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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Chemical Resistant

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DFARS Specialty Metals

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30,000 psi to 99,999 psi

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10 Products

Sanitary Stainless Steel Truss Head Screws

Minimize bacteria and contaminants in food, pharmaceutical, and other sanitary environments. These screws are made of stainless steel, so they won't corrode from frequent washdowns with harsh cleaners and sanitizers. With an extremely smooth surface, they don't have microscopic crevices where bacteria can hide. Their wide head spreads out pressure without adding a washer and reduces the risk of crushing material, such as sheet metal. These screws have a wrench-flat drive with two shallow notches that self-drain to reduce bacterial growth. Tighten the drive with a spanner wrench.

Length is measured from under the head.

		Head, mm
	Lg., mm	Dia.	Ht.	Exterior Smoothness, Ra	Threading	Tensile Strength, psi		Each
Highly Corrosion-Resistant 316L Stainless Steel







				M8 × 1.25 mm

				10	20	5	32	Fully Threaded	70,000	97133A330	000000


				12	20	5	32	Fully Threaded	70,000	97133A340	00000
				16	20	5	32	Fully Threaded	70,000	97133A350	00000
				20	20	5	32	Fully Threaded	70,000	97133A360	00000
				25	20	5	32	Fully Threaded	70,000	97133A370	00000

L-Keys

The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

		Length					Each		Package
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Finish		Each	Pkg. Qty.		Pkg.
Alloy Steel







				Hex

				13	5 11/16"	Short	5 1/8"	1 15/16"	Black Oxide	7289A55	00000	25	7289A551	0000000


				13	10"	Long	9 1/2"	1 15/16"	Black Oxide	6958A55	00000	5	6958A551	00000

Easy-Align Ball-Tip L-Keys

Turn screws at an angle when you can’t access them head on. These L-keys have a ball tip on the long leg that engages the drive with less contact than a straight tip. Ball tips are handy for corners and tightly packed areas, such as control panels and junction boxes. However, they don’t grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

		Length				Ball
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Location	Shape	Finish	Max. Access Angle		Each
Alloy Steel







				Hex

				13	10"	Long	9 1/2"	1 7/8"	Single Ball	Round	Black Phosphate Coated	25°	5503A59	000000