NAS Flat Head Screws | McMaster-Carr

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Countersink Angle

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Flat Head Profile

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Finish

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DFARS Specialty Metals

Threading

Thread Type

Tensile Strength

60,000 psi to 69,999 psi

70,000 psi to 99,999 psi

REACH

RoHS

Tip Type

Performance

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

Yes

Hardness

Rockwell B70

Not Rated

Thread Fit

Unified Standard Class 2A

Not Rated

Export Control Classification Number (ECCN)

EAR99

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195 Products

Drive Style

Phillips

A common drive style that aligns easily with drivers

188 products

Slotted

A simple yet effective drive style for light duty tasks

7 products

Performance

Corrosion Resistant

Resist corrosion from moisture, chemicals, and harsh weather

160 products

Flat Head Profile

Standard

The most common head profile for flat head screws

193 products

Stainless Steel Phillips Flat Head Screws

These screws are made of stainless steel, so they won't rust or corrode when exposed to moisture and chemicals. The Phillips drive has a cross-shaped opening in which a driver fits snugly for easy alignment. With four contact points, they withstand more torque than slotted drives, but drivers slip when you apply too much force.

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.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but 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.

Military Specification—These screws are manufactured and tested to meet strict U.S. military standards for material and construction.

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







				0-80

				3/16"	100°	Standard	0.119"	0.026"	Fully Threaded	70,000	NASM24693	MS24693-C420	50	000000000	00000


				1/4"	100°	Standard	0.119"	0.026"	Fully Threaded	70,000	NASM24693	MS24693-C421	50	000000000	0000
				5/16"	100°	Standard	0.119"	0.026"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C422	50	000000000	0000
				3/8"	100°	Standard	0.119"	0.026"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C423	50	000000000	0000




						2-56

						1/8"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C16	50	000000000	0000


						5/32"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C17	50	000000000	0000
						3/16"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R3, SAE AMS2700	—	100	000000000	00000
						1/4"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R4, SAE AMS2700	—	100	000000000	00000
						5/16"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R5, SAE AMS2700	—	100	000000000	00000
						3/8"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R6, SAE AMS2700	—	100	000000000	00000
						1/2"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R8, SAE AMS2700	—	100	000000000	00000
						5/8"	100°	Standard	0.172"	0.036"	Fully Threaded	70,000	Fed. Spec. FF-S-92, NAS662C2R10	—	50	000000000	0000
						3/4"	100°	Standard	0.172"	0.036"	Fully Threaded	70,000	Fed. Spec. FF-S-92, NAS662C2R12	—	50	000000000	0000




								4-40

								3/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C1	100	000000000	00000


								1/4"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C2	100	000000000	00000
								5/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C3	100	000000000	00000
								3/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C4	100	000000000	00000
								7/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C5	100	000000000	00000
								1/2"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C6	100	000000000	00000
								5/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C7	100	000000000	00000
								3/4"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C8	50	000000000	00000
								7/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C9	50	000000000	00000
								1"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C10	25	000000000	0000
								1 1/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C11	25	000000000	0000


								1 1/4"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C12	50	000000000	00000
								1 1/2"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C14	25	000000000	0000




										6-32

										3/16"	100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C23	100	000000000	00000


1/4"										100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C24	100	000000000	00000
5/16"	100°									Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C25	100	000000000	00000
3/8"	100°									Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C26	100	000000000	00000
7/16"	100°									Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C27	50	000000000	00000
1/2"	100°									Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C28	50	000000000	00000
5/8"	100°	Standard								0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C29	50	000000000	00000
3/4"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C30	50	000000000	00000
7/8"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C31	50	000000000	00000
1"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C32	25	000000000	0000
1 1/8"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C33	25	000000000	0000


1 1/4"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C34	25	000000000	00000
1 1/2"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C36	10	000000000	0000
2"	100°	Standard	0.279"							0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C40	10	000000000	0000
2 1/2"	100°	Standard	0.279"							0.06"	Partially Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C42	10	000000000	00000




		8-32

		1/4"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C46	50	000000000	00000


		5/16"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C47	50	000000000	00000
		3/8"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C48	50	000000000	00000
		7/16"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C49	50	000000000	0000
		1/2"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C50	50	000000000	00000
		5/8"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C51	50	000000000	00000
		3/4"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C52	50	000000000	00000
		7/8"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C53	25	000000000	0000
		1"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C54	25	000000000	00000
		1 1/8"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C55	25	000000000	00000
		1 1/4"	100°	Standard	0.332"					0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C56	25	000000000	00000


		1 1/2"	100°	Standard	0.332"	0.072"	Fully Threaded			70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C58	10	000000000	0000
		1 3/4"	100°	Standard	0.332"	0.072"	Fully Threaded			70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C60	10	000000000	0000
		2"	100°	Standard	0.332"	0.072"	Fully Threaded			70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C62	10	000000000	0000
		2 1/2"	100°	Standard	0.332"	0.072"	Partially Threaded			70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C64	10	000000000	0000




				10-24

				5/16"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C69	50	000000000	00000


				3/8"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C70	25	000000000	00000
				7/16"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C71	25	000000000	0000
				1/2"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C72	25	000000000	00000
				5/8"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C73	25	000000000	0000
				3/4"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C74	10	000000000	0000
				1"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	NASM24693	MS24693-C76	25	000000000	00000
				1 1/4"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C78	10	000000000	0000
				1 1/2"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C80	10	000000000	0000
				2"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C84	10	000000000	0000




						10-32

						1/4"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C268	25	000000000	0000


						5/16"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C269	25	000000000	0000
						3/8"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C270	50	000000000	00000
						7/16"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C271	50	000000000	00000
						1/2"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C272	25	000000000	00000
						5/8"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C273	25	000000000	00000
						3/4"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C274	25	000000000	00000
						7/8"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C275	25	000000000	00000
						1"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C276	25	000000000	00000
						1 1/8"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C277	10	000000000	0000
						1 1/4"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C278	10	000000000	0000


						1 3/8"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C279	10	000000000	0000
						1 1/2"	100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C280	10	000000000	0000
1 5/8"						100°	Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C281	10	000000000	0000
1 3/4"	100°					Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C282	10	000000000	00000
1 7/8"	100°					Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C283	10	000000000	00000
2"	100°					Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C284	10	000000000	0000
2 1/4"	100°					Standard	0.385"	0.083"	Partially Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C285	10	000000000	00000
2 1/2"	100°					Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C286	10	000000000	00000




						1/4"-20

						3/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C92	25	000000000	00000


						7/16"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C93	10	000000000	00000
						1/2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C94	10	000000000	00000
						5/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C95	10	000000000	00000
						3/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C96	25	000000000	00000
						1"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C98	10	000000000	0000
						1 1/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C99	10	000000000	00000
						1 1/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C100	10	000000000	00000
						1 1/2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C102	10	000000000	00000
						1 3/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C104	10	000000000	00000
						2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C106	10	000000000	00000




						1/4"-28

						3/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C292	25	000000000	00000


						7/16"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C293	10	000000000	0000
						1/2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C294	10	000000000	0000
						5/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C295	10	000000000	0000
						3/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C296	10	000000000	00000
						7/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C297	10	000000000	00000
						1"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C298	10	000000000	00000
						1 1/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C299	10	000000000	00000
						1 1/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C300	10	000000000	00000
						1 1/2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	NASM24693	MS24693-C302	10	000000000	00000
				1 5/8"		100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C303	5	000000000	00000


				1 3/4"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C304	5	000000000	00000
				1 7/8"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C305	1	000000000	0000
				2"	100°	Standard	0.507"	0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-C306	1	000000000	0000


				Black-Oxide 18-8 Stainless Steel







								0-80

								3/16"	100°	Standard	0.119"	0.026"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-420B	25	000000000	0000




										2-56

										1/8"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-16B	25	000000000	00000


										5/32"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-17B	25	000000000	00000




										4-40

										3/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-1B	25	000000000	00000


										1/4"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-2B	25	000000000	0000
										5/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-3B	25	000000000	00000
										3/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-4B	25	000000000	00000
										7/16"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-5B	25	000000000	0000
										1/2"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-6B	25	000000000	00000
										5/8"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-7B	25	000000000	00000
										3/4"	100°	Standard	0.225"	0.049"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-8B	25	000000000	0000




			6-32

			3/16"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-23B	25	000000000	0000


			1/4"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-24B	25	000000000	0000
			5/16"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-25B	25	000000000	00000
			3/8"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-26B	25	000000000	00000
			7/16"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-27B	25	000000000	00000
			1/2"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-28B	25	000000000	0000
			5/8"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-29B	25	000000000	00000
			3/4"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-30B	25	000000000	00000
			7/8"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-31B	25	000000000	00000
			1"								100°	Standard	0.279"	0.06"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-32B	25	000000000	00000




												8-32

												1/4"	100°	Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-46B	25	000000000	0000


												5/16"	100°	Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-47B	25	000000000	00000
												3/8"	100°	Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-48B	25	000000000	00000
				7/16"								100°	Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-49B	25	000000000	0000
				1/2"	100°							Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-50B	25	000000000	00000
				5/8"	100°							Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-51B	25	000000000	00000
				3/4"	100°							Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-52B	25	000000000	00000
				7/8"	100°							Standard	0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-53B	25	000000000	00000
				1"	100°	Standard						0.332"	0.072"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-54B	10	000000000	0000




						10-32

						1/4"	100°					Standard	0.385"	0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-268B	25	000000000	00000


						5/16"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-269B	25	000000000	00000
						3/8"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-270B	25	000000000	00000
						7/16"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-271B	25	000000000	00000
						1/2"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-272B	25	000000000	00000
						5/8"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-273B	25	000000000	00000
						3/4"	100°	Standard	0.385"			0.083"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-274B	10	000000000	0000
7/8"						100°	Standard	0.385"	0.083"			Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-275B	10	000000000	0000
1"	100°					Standard	0.385"	0.083"	Fully Threaded			70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-276B	10	000000000	0000




						1/4"-20

						1/2"	100°	Standard	0.507"			0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-94B	10	000000000	00000


						5/8"	100°	Standard	0.507"			0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-95B	10	000000000	00000
						3/4"	100°	Standard	0.507"			0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-96B	10	000000000	00000
						1"	100°	Standard	0.507"			0.11"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM24693, SAE AMS2700	MS24693-98B	10	000000000	00000

Steel Phillips Flat Head Screws

One of the most common drive styles. Phillips drives have a cross-shaped opening in which a driver fits snugly for easy alignment. With four contact points, they withstand more torque than slotted drives, but drivers slip when you apply too much force.

Length is measured from the top of the head.

Cadmium-Plated Steel—The plating reduces friction between the screw and your mounting surface to prevent sticking when you tighten or loosen them. It also creates a barrier against rust.

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.

Military Specification—These screws are manufactured and tested to meet strict U.S. military standards for material and construction.

				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Mil. Spec.	Pkg. Qty.		Pkg.
Cadmium-Plated Steel







				4-40

				3/16"	82°	Undercut	0.225"	0.047"	Fully Threaded	60,000	NASM35190	MS35190-220	100	000000000	000000


				3/16"	100°	Standard	0.225"	0.049"	Fully Threaded	60,000	NASM24693	MS24693-S1	100	000000000	0000
				1/4"	82°	Standard	0.225"	0.067"	Fully Threaded	60,000	NASM35190	MS35190-221	100	000000000	00000
				1/4"	100°	Standard	0.225"	0.049"	Fully Threaded	60,000	NASM24693	MS24693-S2	100	000000000	00000
				3/8"	82°	Standard	0.225"	0.067"	Fully Threaded	60,000	NASM35190	MS35190-223	100	000000000	00000
				3/8"	100°	Standard	0.225"	0.049"	Fully Threaded	60,000	NASM24693	MS24693-S4	100	000000000	00000
				1/2"	82°	Standard	0.225"	0.067"	Fully Threaded	60,000	NASM35190	MS35190-225	100	000000000	00000
				1/2"	100°	Standard	0.225"	0.049"	Fully Threaded	60,000	NASM24693	MS24693-S6	100	000000000	00000




						6-32

						1/4"	82°	Standard	0.279"	0.083"	Fully Threaded	60,000	NASM35190	MS35190-234	100	000000000	00000


						1/4"	100°	Standard	0.279"	0.06"	Fully Threaded	60,000	NASM24693	MS24693-S24	100	000000000	00000
						3/8"	82°	Standard	0.279"	0.083"	Fully Threaded	60,000	NASM35190	MS35190-236	100	000000000	00000
						3/8"	100°	Standard	0.279"	0.06"	Fully Threaded	60,000	NASM24693	MS24693-S26	100	000000000	00000
						1/2"	82°	Standard	0.279"	0.083"	Fully Threaded	60,000	NASM35190	MS35190-238	100	000000000	00000
						1/2"	100°	Standard	0.279"	0.06"	Fully Threaded	60,000	NASM24693	MS24693-S28	50	000000000	0000
						3/4"	82°	Standard	0.279"	0.083"	Fully Threaded	60,000	NASM35190	MS35190-240	100	000000000	00000




								8-32

								1/4"	82°	Undercut	0.332"	0.07"	Fully Threaded	60,000	NASM35190	MS35190-249	100	000000000	00000


								3/8"	82°	Standard	0.332"	0.1"	Fully Threaded	60,000	NASM35190	MS35190-251	100	000000000	00000
								3/8"	100°	Standard	0.332"	0.072"	Fully Threaded	60,000	NASM24693	MS24693-S48	50	000000000	0000
								1/2"	82°	Standard	0.332"	0.1"	Fully Threaded	60,000	NASM35190	MS35190-253	100	000000000	00000
								1/2"	100°	Standard	0.332"	0.072"	Fully Threaded	60,000	NASM24693	MS24693-S50	50	000000000	0000
								3/4"	82°	Standard	0.332"	0.1"	Fully Threaded	60,000	NASM35190	MS35190-255	100	000000000	00000
								3/4"	100°	Standard	0.332"	0.072"	Fully Threaded	60,000	NASM24693	MS24693-S52	50	000000000	00000




										10-32

										3/8"	82°	Standard	0.385"	0.116"	Fully Threaded	60,000	NASM35191	MS35191-270	50	000000000	0000


										3/8"	100°	Standard	0.385"	0.083"	Fully Threaded	60,000	NASM24693	MS24693-S270	50	000000000	00000
										1/2"	82°	Standard	0.385"	0.116"	Fully Threaded	60,000	NASM35191	MS35191-272	50	000000000	00000
										1/2"	100°	Standard	0.385"	0.083"	Fully Threaded	60,000	NASM24693	MS24693-S272	50	000000000	00000
										3/4"	82°	Standard	0.385"	0.116"	Fully Threaded	60,000	NASM35191	MS35191-274	50	000000000	00000
										3/4"	100°	Standard	0.385"	0.083"	Fully Threaded	60,000	NASM24693	MS24693-S274	50	000000000	00000
										1"	82°	Standard	0.385"	0.116"	Fully Threaded	60,000	NASM35191	MS35191-276	50	000000000	00000
1"										100°	Standard	0.385"	0.083"	Fully Threaded	60,000	NASM24693	MS24693-S276	50	000000000	00000




		1/4"-20

		1/2"	82°							Standard	0.507"	0.153"	Fully Threaded	60,000	NASM35190	MS35190-287	25	000000000	00000


		1/2"	100°							Standard	0.507"	0.11"	Fully Threaded	60,000	NASM24693	MS24693-S94	25	000000000	0000
		3/4"	82°							Standard	0.507"	0.153"	Fully Threaded	60,000	NASM35190	MS35190-289	25	000000000	00000
		1"	82°							Standard	0.507"	0.153"	Fully Threaded	60,000	NASM35190	MS35190-291	25	000000000	00000
		1 1/2"	82°							Standard	0.507"	0.153"	Fully Threaded	60,000	NASM35190	MS35190-293	25	000000000	00000

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.

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	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				M0.5 × 0.125 mm

				2	100°	Standard	0.94	0.28	Fully Threaded	70,000	NAS723CE50-080	1	000000000	000000


				3	100°	Standard	0.94	0.28	Fully Threaded	70,000	NAS723CE50-120	1	000000000	00000




						M0.8 × 0.2 mm

						2	100°	Standard	1.42	0.41	Fully Threaded	70,000	NAS723CE80-080	1	000000000	0000


						3	100°	Standard	1.42	0.41	Fully Threaded	70,000	NAS723CE80-120	1	000000000	0000




								M0.9 × 0.225 mm

								2	100°	Standard	1.52	0.38	Fully Threaded	70,000	NAS723CE90-080	1	000000000	0000


								3	100°	Standard	1.52	0.38	Fully Threaded	70,000	NAS723CE90-120	1	000000000	0000
								4	100°	Standard	1.52	0.38	Fully Threaded	70,000	NAS723CE90-160	1	000000000	0000