DIN 963 Machine Screws | McMaster-Carr

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Flat Head Screws

System of Measurement

Thread Size

Length

Drive Style

Fastener Head Type

Material

Head Diameter

Flat Head Profile

Thread Pitch

Countersink Angle

Head Height

Threading

Tip Type

Thread Type

Thread Spacing

Finish

Thread Direction

Thread Fit

Hardness

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

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

RoHS

Compliant

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

148 Products

Performance

Corrosion Resistant

Resist corrosion from moisture, chemicals, and harsh weather

113 products

Chemical Resistant

Won't degrade when exposed to most chemicals

24 products

Performance

Conductive

Conduct electricity better than other screws

26 products

Nonmagnetic

Won't damage or interfere with electronics

26 products

Stainless Steel Slotted Flat Head Screws

The most corrosion-resistant slotted flat head screws we offer. Made of stainless steel, they won't rust or corrode when exposed to moisture or chemicals. With only two contact points, the slotted drive is the most basic drive style. The slot can't withstand much torque, so it's best to hand-tighten them instead of using power tools.

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.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these screws won't degrade when exposed to harsh weather, salt water, and most chemicals.

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

				Head, mm
	Lg., mm	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				M1 × 0.25 mm

				3	90°	Standard	1.90	0.60	Fully Threaded	70,000	10	91430A150	00000


				4	90°	Standard	1.90	0.60	Fully Threaded	70,000	10	91430A151	0000




						M1.2 × 0.25 mm

						2	90°	Standard	2.30	0.72	Fully Threaded	70,000	10	91430A152	0000


						3	90°	Standard	2.30	0.72	Fully Threaded	70,000	10	91430A153	0000
						4	90°	Standard	2.30	0.72	Fully Threaded	70,000	10	91430A154	0000




								M1.4 × 0.3 mm

								3	90°	Standard	2.60	0.84	Fully Threaded	70,000	10	91430A155	00000


								4	90°	Standard	2.60	0.84	Fully Threaded	70,000	10	91430A156	00000




										M1.6 × 0.35 mm

										2	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A157	00000


										3	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A158	00000
										4	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A003	00000
										5	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A005	00000
										6	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A159	0000
										8	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A007	00000
										10	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A009	0000
										12	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A160	00000
										16	90°	Standard	3.00	0.96	Fully Threaded	70,000	25	91430A161	00000




												M2 × 0.4 mm

												4	90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A050	00000


												5	90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A052	0000
												6	90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A054	00000
												8	90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A056	0000
												10	90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A058	00000
12												90°	Standard	3.80	1.20	Fully Threaded	70,000	100	91430A060	00000
16	90°											Standard	3.80	1.20	Fully Threaded	70,000	100	91430A062	00000




		M2.5 × 0.45 mm

		4	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A075	00000


		5	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A077	00000
		6	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A079	00000
		8	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A081	00000
		10	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A083	0000
		12	90°									Standard	4.70	1.50	Fully Threaded	70,000	100	91430A085	00000




				M3 × 0.5 mm

				5	90°							Standard	5.60	1.65	Fully Threaded	70,000	100	91430A114	00000


				6	90°							Standard	5.60	1.65	Fully Threaded	70,000	100	91430A116	0000
				8	90°							Standard	5.60	1.65	Fully Threaded	70,000	100	91430A118	0000
				10	90°							Standard	5.60	1.65	Fully Threaded	70,000	100	91430A120	0000
				12	90°	Standard						5.60	1.65	Fully Threaded	70,000	100	91430A122	0000
				16	90°	Standard	5.60					1.65	Fully Threaded	70,000	100	91430A126	00000
				20	90°	Standard	5.60					1.65	Fully Threaded	70,000	100	91430A128	00000




						M4 × 0.7 mm

						6	90°					Standard	7.50	2.20	Fully Threaded	70,000	100	91430A216	00000


						8	90°	Standard	7.50			2.20	Fully Threaded	70,000	100	91430A218	0000
						10	90°	Standard	7.50			2.20	Fully Threaded	70,000	100	91430A220	0000
						12	90°	Standard	7.50			2.20	Fully Threaded	70,000	100	91430A222	00000
						16	90°	Standard	7.50			2.20	Fully Threaded	70,000	100	91430A226	00000
						20	90°	Standard	7.50			2.20	Fully Threaded	70,000	100	91430A228	00000




								M5 × 0.8 mm

								8	90°			Standard	9.20	2.50	Fully Threaded	70,000	50	91430A162	00000


								10	90°			Standard	9.20	2.50	Fully Threaded	70,000	100	91430A320	00000
								12	90°			Standard	9.20	2.50	Fully Threaded	70,000	100	91430A322	00000
								16	90°			Standard	9.20	2.50	Fully Threaded	70,000	100	91430A326	00000
								20	90°	Standard		9.20	2.50	Fully Threaded	70,000	100	91430A328	00000
								25	90°	Standard	9.20	2.50	Fully Threaded	70,000	50	91430A330	00000




										M6 × 1 mm

										10	90°	Standard	11.00	3.00	Fully Threaded	70,000	50	91430A420	00000


12										90°	Standard	11.00	3.00	Fully Threaded	70,000	50	91430A419	00000
16	90°									Standard	11.00	3.00	Fully Threaded	70,000	50	91430A426	00000
20	90°									Standard	11.00	3.00	Fully Threaded	70,000	50	91430A428	00000
25	90°									Standard	11.00	3.00	Fully Threaded	70,000	50	91430A430	00000
30	90°									Standard	11.00	3.00	Fully Threaded	70,000	25	91430A432	00000




										M8 × 1.25 mm

										16	90°	Standard	14.50	4.00	Fully Threaded	70,000	25	91430A526	00000


		20								90°	Standard	14.50	4.00	Fully Threaded	70,000	25	91430A528	00000
		25	90°							Standard	14.50	4.00	Fully Threaded	70,000	25	91430A530	00000




										M10 × 1.5 mm

										20	90°	Standard	18.00	5.00	Fully Threaded	70,000	10	91430A163	00000


										25	90°	Standard	18.00	5.00	Fully Threaded	70,000	10	91430A164	00000
										30	90°	Standard	18.00	5.00	Fully Threaded	70,000	5	91430A165	00000




										M12 × 1.75 mm

										25	90°	Standard	22.00	6.00	Fully Threaded	70,000	5	91430A166	00000


										30	90°	Standard	22.00	6.00	Fully Threaded	70,000	1	91430A167	0000
										35	90°	Standard	22.00	6.00	Fully Threaded	70,000	1	91430A168	0000


										Highly Corrosion-Resistant 316 Stainless Steel







												M3 × 0.5 mm

												5	90°	Standard	5.50	1.65	Fully Threaded	100,000	100	91858A260	00000


												6	90°	Standard	5.50	1.65	Fully Threaded	100,000	100	91858A270	00000
												8	90°	Standard	5.50	1.65	Fully Threaded	100,000	100	91858A280	00000
												10	90°	Standard	5.50	1.65	Fully Threaded	100,000	100	91858A290	00000
												12	90°	Standard	5.50	1.65	Fully Threaded	100,000	100	91858A310	00000




												M4 × 0.7 mm

												6	90°	Standard	7.50	2.20	Fully Threaded	100,000	100	91858A320	00000


												8	90°	Standard	7.50	2.20	Fully Threaded	100,000	100	91858A330	00000
												10	90°	Standard	7.50	2.20	Fully Threaded	100,000	100	91858A340	00000
												12	90°	Standard	7.50	2.20	Fully Threaded	100,000	100	91858A350	00000
												16	90°	Standard	7.50	2.20	Fully Threaded	100,000	100	91858A360	00000




												M5 × 0.8 mm

												8	90°	Standard	9.20	2.50	Fully Threaded	100,000	50	91858A370	00000


												10	90°	Standard	9.20	2.50	Fully Threaded	100,000	50	91858A380	00000
												12	90°	Standard	9.20	2.50	Fully Threaded	100,000	50	91858A390	00000
												16	90°	Standard	9.20	2.50	Fully Threaded	100,000	50	91858A410	00000
		20										90°	Standard	9.20	2.50	Fully Threaded	100,000	50	91858A420	00000




												M6 × 1 mm

												12	90°	Standard	11.00	3.00	Fully Threaded	100,000	25	91858A430	00000


												16	90°	Standard	11.00	3.00	Fully Threaded	100,000	25	91858A440	0000
				20								90°	Standard	11.00	3.00	Fully Threaded	100,000	25	91858A450	00000
				25	90°							Standard	11.00	3.00	Fully Threaded	100,000	25	91858A460	00000
				30	90°							Standard	11.00	3.00	Fully Threaded	100,000	25	91858A470	00000




												M8 × 1.25 mm

												16	90°	Standard	14.50	4.00	Fully Threaded	100,000	10	91858A480	00000


										20		90°	Standard	14.50	4.00	Fully Threaded	100,000	10	91858A490	00000
										25	90°	Standard	14.50	4.00	Fully Threaded	100,000	10	91858A510	00000
										30	90°	Standard	14.50	4.00	Fully Threaded	100,000	10	91858A520	00000

Steel Slotted Flat Head Screws

A simple yet effective drive style for light duty tasks. With only two contact points, the slotted drive is the most basic drive style. The slot can't withstand much torque, so it's best to hand-tighten them instead of using power tools.

Length is measured from the top of the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

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

				Head, mm
	Lg., mm	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M2 × 0.4 mm

				4	90°	Standard	3.80	1.20	Fully Threaded	60,000	100	90274A017	00000


				5	90°	Standard	3.80	1.20	Fully Threaded	60,000	100	90274A018	0000
				6	90°	Standard	3.80	1.20	Fully Threaded	60,000	100	90274A019	0000




						M3 × 0.5 mm

						5	90°	Standard	5.60	1.65	Fully Threaded	60,000	100	90274A114	0000


						6	90°	Standard	5.60	1.65	Fully Threaded	60,000	100	90274A116	0000
						8	90°	Standard	5.60	1.65	Fully Threaded	60,000	100	90274A118	0000
						10	90°	Standard	5.60	1.65	Fully Threaded	60,000	100	90274A120	0000
						16	90°	Standard	5.60	1.65	Fully Threaded	60,000	100	90274A126	0000




								M4 × 0.7 mm

								5	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A214	00000


								6	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A216	0000
								8	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A218	0000
								10	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A220	0000
								12	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A222	0000
								16	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A226	0000
								20	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A228	0000
								25	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A230	0000
								35	90°	Standard	7.50	2.20	Fully Threaded	60,000	100	90274A234	0000




										M5 × 0.8 mm

										8	90°	Standard	9.20	2.50	Fully Threaded	60,000	100	90274A318	0000


										10	90°	Standard	9.20	2.50	Fully Threaded	60,000	100	90274A320	0000
										12	90°	Standard	9.20	2.50	Fully Threaded	60,000	100	90274A322	00000
										16	90°	Standard	9.20	2.50	Fully Threaded	60,000	100	90274A326	00000
										25	90°	Standard	9.20	2.50	Fully Threaded	60,000	100	90274A330	00000




												M6 × 1 mm

												10	90°	Standard	11.00	3.00	Fully Threaded	60,000	100	90274A420	00000


12	90°											Standard	11.00	3.00	Fully Threaded	60,000	100	90274A419	0000
16	90°											Standard	11.00	3.00	Fully Threaded	60,000	100	90274A426	00000
20	90°											Standard	11.00	3.00	Fully Threaded	60,000	100	90274A428	00000
25	90°	Standard										11.00	3.00	Fully Threaded	60,000	50	90274A430	0000
40	90°	Standard	11.00									3.00	Fully Threaded	60,000	50	90274A436	00000
50	90°	Standard	11.00									3.00	Fully Threaded	60,000	50	90274A440	00000




		M8 × 1.25 mm

		16	90°									Standard	14.50	4.00	Fully Threaded	60,000	50	90274A526	00000


		25	90°	Standard								14.50	4.00	Fully Threaded	60,000	50	90274A530	00000




				M10 × 1.5 mm

				20	90°							Standard	18.00	5.00	Fully Threaded	60,000	25	90274A638	00000


				30	90°							Standard	18.00	5.00	Fully Threaded	60,000	10	90274A645	0000
				35	90°							Standard	18.00	5.00	Fully Threaded	60,000	10	90274A643	0000
				40	90°							Standard	18.00	5.00	Fully Threaded	60,000	10	90274A644	00000

Brass Slotted Flat Head Screws

Conductive and nonmagnetic, these slotted screws are often used to secure electrical equipment, such as circuit boards, inside enclosures. Made of brass, they also resist corrosion in humid environments. With only two contact points, the slotted drive is the most basic drive style. The slot can't withstand much torque, so it's best to hand-tighten them instead of using power tools.

Length is measured from the top of the head.

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

				Head, mm
	Lg., mm	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Pkg. Qty.		Pkg.
Brass







				M2 × 0.4 mm

				4	90°	Standard	3.80	1.20	Fully Threaded	50,000	50	96686A363	000000


				5	90°	Standard	3.80	1.20	Fully Threaded	50,000	50	96686A364	00000
				6	90°	Standard	3.80	1.20	Fully Threaded	50,000	50	96686A150	0000
				10	90°	Standard	3.80	1.20	Fully Threaded	50,000	50	96686A153	0000
				12	90°	Standard	3.80	1.20	Fully Threaded	50,000	50	96686A156	00000




						M3 × 0.5 mm

						6	90°	Standard	5.50	1.65	Fully Threaded	50,000	50	96686A210	0000


						8	90°	Standard	5.50	1.65	Fully Threaded	50,000	50	96686A213	0000
						10	90°	Standard	5.50	1.65	Fully Threaded	50,000	50	96686A216	00000
						12	90°	Standard	5.50	1.65	Fully Threaded	50,000	50	96686A219	0000
						16	90°	Standard	5.50	1.65	Fully Threaded	50,000	50	96686A222	0000




								M4 × 0.7 mm

								8	90°	Standard	7.50	2.20	Fully Threaded	50,000	50	96686A255	00000


								10	90°	Standard	7.50	2.20	Fully Threaded	50,000	50	96686A258	00000
								12	90°	Standard	7.50	2.20	Fully Threaded	50,000	50	96686A261	00000
								16	90°	Standard	7.50	2.20	Fully Threaded	50,000	25	96686A264	00000
								20	90°	Standard	7.50	2.20	Fully Threaded	50,000	25	96686A267	00000
								25	90°	Standard	7.50	2.20	Fully Threaded	50,000	25	96686A270	00000




										M5 × 0.8 mm

										10	90°	Standard	9.20	2.50	Fully Threaded	50,000	25	96686A305	00000


										12	90°	Standard	9.20	2.50	Fully Threaded	50,000	25	96686A308	00000
										16	90°	Standard	9.20	2.50	Fully Threaded	50,000	25	96686A311	00000
										20	90°	Standard	9.20	2.50	Fully Threaded	50,000	25	96686A314	00000
										25	90°	Standard	9.20	2.50	Fully Threaded	50,000	25	96686A317	00000




												M6 × 1 mm

												12	90°	Standard	11.00	3.00	Fully Threaded	50,000	25	96686A350	00000


16	90°											Standard	11.00	3.00	Fully Threaded	50,000	10	96686A353	0000
20	90°											Standard	11.00	3.00	Fully Threaded	50,000	10	96686A356	00000
25	90°											Standard	11.00	3.00	Fully Threaded	50,000	10	96686A359	00000
30	90°											Standard	11.00	3.00	Fully Threaded	50,000	10	96686A362	00000