NAS662C Screws | McMaster-Carr

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Military Specification

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NAS

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Countersink Angle

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Specifications Met

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Flat Head Profile

Head Diameter

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Material Certificate with Traceable Lot Number

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30,000 psi to 99,999 psi

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Compliant

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No. 1

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7 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.

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	Mil. Spec.	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				2-56

				3/16"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R3	Material Certificate	100	93085A015	000000


				1/4"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R4	Material Certificate	100	93085A017	00000
				5/16"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R5	Material Certificate	100	93085A019	00000
				3/8"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R6	Material Certificate	100	93085A021	00000
				1/2"	100°	Standard	0.172"	0.037"	Fully Threaded	70,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NAS662C2R8	Material Certificate	100	93085A023	00000
				5/8"	100°	Standard	0.172"	0.036"	Fully Threaded	70,000	Fed. Spec. FF-S-92, NAS662C2R10	—	50	93085A838	0000
				3/4"	100°	Standard	0.172"	0.036"	Fully Threaded	70,000	Fed. Spec. FF-S-92, NAS662C2R12	—	50	93085A839	00000