Sanitary Screws | McMaster-Carr

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Sanitary

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Food and Beverage

Sanitary

Clean Room

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Material Material

Plastic

Stainless Steel

Steel

	Length Length

	Head Type Head Type


Rounded	Hex

Thumb

	Head Height Head Height

	Drive Style Drive Style


External Hex	Wrench Flat

	Head Diameter Head Diameter

	Threading Threading

	Fully Threaded

	Rounded Head Style Rounded Head Style

	Truss

	Shape Shape

	Round

	Thread Direction Thread Direction

	Right Hand

	Drive Size Drive Size

	Specifications Met Specifications Met

EHEDG Certified

FDA Compliant

	Thread Type Thread Type

Metric

UNC

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Head Width Head Width

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
Compliant

DFARS Specialty Metals
COTS-Exempt

	Thumb Screw Head Shape Thumb Screw Head Shape

	Spade

	Tensile Strength Tensile Strength

70,000 psi

Not Rated

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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72 Products

About Thumb Screw and Binding Post Materials

About Hex Head Screws and Bolts

About Rounded Head Screws

Designed for use in food, pharmaceutical, and other sanitary environments, these screws have an extra-wide truss head that distributes holding pressure to reduce the likelihood of crushing thin materials. All are made from stainless steel, so they won’t corrode from frequent washdowns with harsh cleaners and sanitizers. These screws have an extremely smooth 32 Ra finish and are self-draining to reduce the risk of bacteria growth. They also have wrench flats for damage-free tightening and loosening with a spanner wrench. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

				Drive
Lg., mm	Threading	Head Dia., mm	Head Ht., mm	Style	Size, mm	Tensile Strength, psi		Each
316L Stainless Steel
M3 × 0.5 mm
4	Fully Threaded	8	2	Wrench Flat	5	70,000	000000000	00000
5	Fully Threaded	8	2	Wrench Flat	5	70,000	000000000	0000
6	Fully Threaded	8	2	Wrench Flat	5	70,000	000000000	0000
8	Fully Threaded	8	2	Wrench Flat	5	70,000	000000000	0000
10	Fully Threaded	8	2	Wrench Flat	5	70,000	000000000	0000
M4 × 0.7 mm
5	Fully Threaded	11	3	Wrench Flat	6	70,000	000000000	0000
6	Fully Threaded	11	3	Wrench Flat	6	70,000	000000000	0000
8	Fully Threaded	11	3	Wrench Flat	6	70,000	000000000	0000
10	Fully Threaded	11	3	Wrench Flat	6	70,000	000000000	0000
12	Fully Threaded	11	3	Wrench Flat	6	70,000	000000000	0000
M5 × 0.8 mm
6	Fully Threaded	14	4	Wrench Flat	8	70,000	000000000	0000
8	Fully Threaded	14	4	Wrench Flat	8	70,000	000000000	0000
10	Fully Threaded	14	4	Wrench Flat	8	70,000	000000000	0000
12	Fully Threaded	14	4	Wrench Flat	8	70,000	000000000	00000
16	Fully Threaded	14	4	Wrench Flat	8	70,000	000000000	00000
M6 × 1 mm
8	Fully Threaded	17	5	Wrench Flat	10	70,000	000000000	00000
10	Fully Threaded	17	5	Wrench Flat	10	70,000	000000000	00000
12	Fully Threaded	17	5	Wrench Flat	10	70,000	000000000	00000
16	Fully Threaded	17	5	Wrench Flat	10	70,000	000000000	00000
20	Fully Threaded	17	5	Wrench Flat	10	70,000	000000000	00000
M8 × 1.25 mm
10	Fully Threaded	20	5	Wrench Flat	13	70,000	000000000	00000
12	Fully Threaded	20	5	Wrench Flat	13	70,000	000000000	00000
16	Fully Threaded	20	5	Wrench Flat	13	70,000	000000000	00000
20	Fully Threaded	20	5	Wrench Flat	13	70,000	000000000	00000
25	Fully Threaded	20	5	Wrench Flat	13	70,000	000000000	00000
M10 × 1.5 mm
16	Fully Threaded	22	6	Wrench Flat	15	70,000	000000000	00000
20	Fully Threaded	22	6	Wrench Flat	15	70,000	000000000	00000
25	Fully Threaded	22	6	Wrench Flat	15	70,000	000000000	00000
30	Fully Threaded	22	6	Wrench Flat	15	70,000	000000000	00000
M12 × 1.75 mm
25	Fully Threaded	27	7.5	Wrench Flat	19	70,000	000000000	00000
30	Fully Threaded	27	7.5	Wrench Flat	19	70,000	000000000	00000

Sanitary Hex Head Screws

Bolt down equipment in food processing or sanitary areas while sealing out contaminants. Certified by EHEDG (European Hygienic Engineering and Design Group) to meet sanitary design standards, these screws have a nitrile rubber seal underneath the head to keep liquid and debris off the threads and prevent an unsanitary metal-to-metal connection. The seal is also FDA compliant, so it’s safe for direct contact with food.

Made from 316 stainless steel, these screws won’t corrode from frequent washdowns with water or harsh cleaners. They have self-draining surfaces, which means there are no horizontal ledges, so liquid and debris will drain off completely. The smooth, polished sides and rounded edges have no pits or crevices where bacteria could grow.

For technical drawings and 3-D models, click on a part number.

			Head
Lg.	Threading	Thread Spacing	Wd.	Ht.	Flange Diameter	Temperature Range, °F	Tensile Strength, psi	Performance Properties	Specifications Met		Each
316 Stainless Steel
1/4"-20
1/2"	Fully Threaded	Coarse	7/16"	21/64"	37/64"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	000000
3/4"	Fully Threaded	Coarse	7/16"	21/64"	37/64"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1"	Fully Threaded	Coarse	7/16"	21/64"	37/64"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/4"	Fully Threaded	Coarse	7/16"	21/64"	37/64"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/2"	Fully Threaded	Coarse	7/16"	21/64"	37/64"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
5/16"-18
3/4"	Fully Threaded	Coarse	1/2"	25/64"	11/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1"	Fully Threaded	Coarse	1/2"	25/64"	11/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/4"	Fully Threaded	Coarse	1/2"	25/64"	11/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/2"	Fully Threaded	Coarse	1/2"	25/64"	11/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
3/8"-16
3/4"	Fully Threaded	Coarse	9/16"	15/32"	25/32"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1"	Fully Threaded	Coarse	9/16"	15/32"	25/32"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/4"	Fully Threaded	Coarse	9/16"	15/32"	25/32"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/2"	Fully Threaded	Coarse	9/16"	15/32"	25/32"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1/2"-13
1"	Fully Threaded	Coarse	3/4"	35/64"	1 1/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/4"	Fully Threaded	Coarse	3/4"	35/64"	1 1/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 1/2"	Fully Threaded	Coarse	3/4"	35/64"	1 1/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
1 3/4"	Fully Threaded	Coarse	3/4"	35/64"	1 1/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
2"	Fully Threaded	Coarse	3/4"	35/64"	1 1/16"	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
M6 × 1mm
12mm	Fully Threaded	Coarse	10mm	8mm	12.8mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	0000
16mm	Fully Threaded	Coarse	10mm	8mm	12.8mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	0000
20mm	Fully Threaded	Coarse	10mm	8mm	12.8mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	0000
25mm	Fully Threaded	Coarse	10mm	8mm	12.8mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	0000
M8 × 1.25mm
16mm	Fully Threaded	Coarse	13mm	10mm	17.3mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
20mm	Fully Threaded	Coarse	13mm	10mm	17.3mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
25mm	Fully Threaded	Coarse	13mm	10mm	17.3mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000
30mm	Fully Threaded	Coarse	13mm	10mm	17.3mm	-75° to 390°	70,000	Metal Detectable, X-Ray Detectable	EHEDG Certified, FDA Compliant 21 CFR 177.2600	000000000	00000

Sanitary Spade-Head Thumb Screws

Fasten material by hand, so tools don’t scratch or contaminate parts you frequently adjust in food-processing or pharmaceutical plants. Made from 316 stainless steel, these thumb screws won’t corrode from frequent washdowns with water or harsh cleaners. They have self-draining surfaces, which means there are no horizontal ledges, so liquid and food will run off completely. The smooth, polished sides and rounded edges minimize spots where bacteria could grow.

For technical drawings and 3-D models, click on a part number.

	Head, mm
Lg., mm	Wd.	Ht.		Each
316 Stainless Steel
M4 × 0.7 mm
8	20	19	00000000	000000
M5 × 0.8 mm
10	21	21	00000000	00000
M6 × 1 mm
12	25	25	00000000	00000
M8 × 1.25 mm
16	33	33	00000000	00000
M10 × 1.5 mm
20	40	40	00000000	00000

Sanitary Threaded Standoffs

Threaded Standoff (Front View)

Threaded Standoff (Back View)

Mount components onto food processing lines, walls, and sanitary equipment while leaving space to clean in between. These standoffs have a smooth finish and rounded edges to eliminate pits or crevices where bacteria could grow. Made of stainless steel, they won’t corrode from frequent washdowns with harsh cleaners and sanitizers. A rubber seal stops water and contaminants from entering the body of these standoffs. They are FDA compliant for safe contact with food. Use the included locknut and washer to mount these standoffs to an enclosure, and use the internal threads to fasten them to machines, walls, or other surfaces.

For technical drawings and 3-D models, click on a part number.

	Thread (A)			Thread (B)
Lg., mm	Size	Pitch, mm.	Lg., mm	Size	Pitch, mm	Min. Lg., mm	Specifications Met		Each
18-8 Stainless Steel with TPE Rubber Seal
33.7 mm OD
50	M16	1.5	11.5	M10	1.25	15	FDA Compliant 21 CFR 177.2600	000000000	000000

Sanitary Threaded-Stud Pull Knobs

Thread these sanitary knobs into holes so you can open doors and drawers in hygienic environments. They’re commonly used on furniture and equipment in pharmaceutical and food-processing facilities. Made of Buna-N rubber, the seal keeps out contaminants and blocks unhygienic metal-to-metal contact. It’s FDA compliant for direct contact with food, and blue for easy spotting and removal if it falls into your line. Knobs have a 316 stainless steel body, so they resist corrosion from frequent washdowns with harsh cleaners. Highly polished, with rounded edges and no horizontal ledges, they leave no room for bacteria to grow.

For technical drawings and 3-D models, click on a part number.

Knobs
Thread			Head		Hub						Replacement Seals
Size	Pitch, mm	Stud Lg., mm	Dia., mm	Ht., mm	Dia., mm	Ht., mm	Temp. Range, °F	Specifications Met		Each		Each
Smooth Grip
316 Stainless Steel—Polished
M5	0.8	10	20	5	14	19	-10° to 300°	FDA Compliant 21 CFR 177.2600	00000000	000000	0000000	00000
M6	1	12	25	7	16	22	-10° to 300°	FDA Compliant 21 CFR 177.2600	00000000	00000	0000000	0000
M8	1.25	14	32	8	18	29	-10° to 300°	FDA Compliant 21 CFR 177.2600	00000000	00000	0000000	0000

Screw Conveyors

Add on to an existing screw conveyor or keep it running like new.

UHMW bearings work well with chemicals and wet environments.

For technical drawings and 3-D models, click on a part number.

Bearings

UHMW Polyethylene Plastic (FDA Compliant 21 CFR 177.1520)
For Screw Dia.	For Shaft Dia.		Each
6", 9"	1 1/2"	0000000	000000
9", 12"	2"	0000000	00000
12", 14"	2 7/16"	0000000	00000

About Thumb Screw and Binding Post Materials

About Hex Head Screws and Bolts

About Rounded Head Screws

Sanitary Extra-Wide Truss Head Screws

Sanitary Hex Head Screws

Sanitary Spade-Head Thumb Screws

Sanitary Threaded Standoffs

Sanitary Threaded-Stud Pull Knobs

Screw Conveyors