DIN 603 Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

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Threading

Neck Width

Fastener Head Type

Thread Pitch

Head Diameter

Rounded Head Style

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Neck Length

Head Height

Finish

Thread Spacing

Fastener Strength Grade/Class

Thread Direction

Hardness

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Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

58 Products

18-8 Stainless Steel Square-Neck Carriage Bolts


	Fully Threaded

Made from 18-8 stainless steel, these bolts have good chemical resistance and may be mildly magnetic. They're a good choice for ACQ-treated (arsenic-free) lumber. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Length is measured from under the head. Dimensions meet ASME B18.5 or DIN 603 specifications. Some also meet ISO 8678. DIN 603 is functionally equivalent to ISO 8678 with slight differences in head diameter, head height, and length tolerances.

Match the thread spacing of mating components.

Coarse Thread—Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch.

				Head, mm		Neck, mm
	Lg., mm	Threading	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				M5 × 0.8 mm

				10	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	50	000000000	00000


				12	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	25	000000000	0000
				16	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	25	000000000	0000
				20	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	25	000000000	0000
				25	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	25	000000000	0000
				30	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	25	000000000	0000
				35	Fully Threaded	Coarse	13.55	3.3	5.48	4.1	70,000	DIN 603	10	000000000	0000




						M6 × 1 mm

						12	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	50	000000000	00000


						16	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	50	000000000	00000
						20	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	50	000000000	00000
						25	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	50	000000000	00000
						30	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	50	000000000	00000
						40	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603, ISO 8678	25	000000000	0000




								M8 × 1.25 mm

								16	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	25	000000000	00000


								20	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	25	000000000	00000
								25	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	25	000000000	00000
								30	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	25	000000000	00000
								35	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	25	000000000	00000
								40	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	10	000000000	0000
								50	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603, ISO 8678	10	000000000	0000




										M10 × 1.5 mm

										20	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603, ISO 8678	10	000000000	0000


										25	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603, ISO 8678	10	000000000	0000
										30	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603, ISO 8678	10	000000000	0000
										35	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603, ISO 8678	10	000000000	00000
										40	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603, ISO 8678	10	000000000	00000




M12 × 1.75 mm

25	Fully Threaded											Coarse	30.65	6.95	12.7	8.7	70,000	DIN 603	5	000000000	0000


30	Fully Threaded											Coarse	30.65	6.95	12.7	8.7	70,000	DIN 603	5	000000000	0000
35	Fully Threaded	Coarse										30.65	6.95	12.7	8.7	70,000	DIN 603	5	000000000	0000
40	Fully Threaded	Coarse	30.65									6.95	12.7	8.7	70,000	DIN 603	5	000000000	0000
50	Fully Threaded	Coarse	30.65									6.95	12.7	8.7	70,000	DIN 603	1	000000000	0000
60	Fully Threaded	Coarse	30.65									6.95	12.7	8.7	70,000	DIN 603	1	000000000	0000
80	Fully Threaded	Coarse	30.65									6.95	12.7	8.7	70,000	DIN 603	1	000000000	0000




		M16 × 2 mm

		40	Fully Threaded									Coarse	38.8	8.95	16.7	12.9	70,000	DIN 603	1	000000000	0000


		50	Fully Threaded									Coarse	38.8	8.95	16.7	12.9	70,000	DIN 603	1	000000000	0000
		60	Fully Threaded									Coarse	38.8	8.95	16.7	12.9	70,000	DIN 603	1	000000000	0000
		80	Fully Threaded	Coarse								38.8	8.95	16.7	12.9	70,000	DIN 603	1	000000000	0000

Medium-Strength Metric Class 8.8 Steel Square-Neck Carriage Bolts


Fully Threaded	Partially Threaded

These Class 8.8 steel bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Length is measured from under the head.

Zinc Plated—Zinc plated steel bolts resist corrosion in wet environments.

					Head, mm		Neck, mm
	Lg., mm	Threading	Min. Thread Lg., mm	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Zinc Plated ISO Class 8.8 Steel







				M6 × 1 mm

				12	Fully Threaded	—	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	00000


				16	Fully Threaded	—	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	0000
				20	Fully Threaded	—	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	0000
				25	Fully Threaded	—	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	0000
				30	Partially Threaded	18	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	00000
				35	Partially Threaded	18	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	00000
				40	Partially Threaded	18	Coarse	16.55	3.88	6.48	4.6	110,000	DIN 603	25	000000000	00000

Highly Corrosion-Resistant 316 Stainless Steel Square-Neck Carriage Bolts


	Fully Threaded

More corrosion resistant than 18-8 stainless steel bolts, these 316 stainless steel bolts have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. They may be mildly magnetic. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Dimensions meet ASME B18.5 or DIN 603 specifications. Length is measured from under the head.

				Head, mm		Neck, mm
	Lg., mm	Threading	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
316 Stainless Steel







				M6 × 1 mm

				20	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603	10	000000000	00000


				25	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603	10	000000000	0000
				30	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603	10	000000000	0000
				40	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603	10	000000000	0000
				50	Fully Threaded	Coarse	16.55	3.8	6	4.6	70,000	DIN 603	10	000000000	0000




						M8 × 1.25 mm

						20	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603	10	000000000	00000


						25	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603	10	000000000	00000
						30	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603	10	000000000	00000
						40	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603	10	000000000	00000
						50	Fully Threaded	Coarse	20.65	4.88	8	5.6	70,000	DIN 603	5	000000000	0000




								M10 × 1.5 mm

								25	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603	5	000000000	0000


								30	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603	5	000000000	00000
								40	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603	5	000000000	00000
								50	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603	5	000000000	00000
								70	Fully Threaded	Coarse	24.65	5.38	10	6.6	70,000	DIN 603	1	000000000	0000