NAS Cap Screws | McMaster-Carr

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NAS

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Warning: Products have one, but not necessarily all, of the selected characteristics.

AN

DIN

EHEDG Certified

FDA Compliant

Fed. Spec.

IFI

ISO

Mil. Spec.

NAS

SAE

UL

	System of Measurement System of Measurement

	Thread Size Thread Size

0-80
2-56
4-40
6-32
6-40
8-32
10-24
10-32
1/4"-20
1/4"-28
5/16"-18
5/16"-24
3/8"-16
3/8"-24
1/2"-13
M0.5
M0.8
M0.9

	Length Length

	Material Material

Stainless Steel

	Head Type Head Type


Socket	Hex

Rounded	Flat

	Drive Style Drive Style


External Hex	Hex

Phillips	Slotted

	Socket Head Profile Socket Head Profile

	Standard

	Threading Threading

	Fully Threaded
	Partially Threaded

	Tensile Strength Tensile Strength

60,000 to 79,999 psi

80,000 to 99,999 psi

100,000 psi or greater

	Head Diameter Head Diameter

	Finish Finish

	Thread Direction Thread Direction

	Right Hand

	Head Height Head Height

	Thread Fit Thread Fit

	Hardness Hardness

	Thread Type Thread Type

	Countersink Angle Countersink Angle

	Thread Spacing Thread Spacing

	Drive Size Drive Size

	Rounded Head Style Rounded Head Style


Pan	Fillister

Cheese

	Flat Head Profile Flat Head Profile


Standard	Undercut

	Rounded Head Profile Rounded Head Profile

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552 Products

Screws and Bolts

Mil. Spec. Alloy Steel
Socket Head Screws

Choose these screws for their adherence to strict military standards for material and construction.

Mil. Spec. 18-8 Stainless
Steel Socket Head Screws

Choose these screws for their adherence to strict military standards for material and construction. Screws are 18-8 stainless steel for good chemical resistance.

High-Strength A286 Stainless
Steel Socket Head Screws

Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They are comparable in strength to alloy steel with the corrosion resistance of 18-8 stainless steel.

High-Strength Steel Hex Head
Screws with Phillips Drive

High-Strength Steel Hex Head Screws with Phillips Drive

When clearance for a wrench is limited, these screws have a Phillips drive so you can install them with a screwdriver. They are used for high-strength fastening.

Mil. Spec. Stainless Steel
Pan Head Phillips Screws

Choose these screws for their adherence to strict military standards for material and construction.

Mil. Spec. Steel Pan
Head Phillips Screws

Choose these screws for their adherence to strict military standards for material and construction.

18-8 Stainless Steel Narrow
Cheese Head Slotted Screws

18-8 Stainless Steel Narrow Cheese Head Slotted Screws

More corrosion resistant than steel, and almost as strong, these 18-8 stainless steel screws have a narrower head than pan head screws to fit into tight spaces. They’re often used in electrical panels and next to flanges and raised surfaces in humid, damp, and washdown environments, but will corrode if exposed to salt water or chemicals.

Wire-Lockable Rounded Head Screws

Wire-Lockable Rounded Head Screws

Wire these screws together through the hole in the head for better vibration resistance than any other rounded head screw.

Vibration-Resistant Sealing
Rounded Head Screws

A nylon patch bonded to the threads adds friction to resist loosening from vibration.

Mil. Spec. Stainless Steel
Phillips Flat Head Screws

Mil. Spec. Stainless Steel Phillips Flat Head Screws

Choose these screws for their adherence to strict military standards for material and construction.

Mil. Spec. Steel Phillips
Flat Head Screws

Choose these screws for their adherence to strict military standards for material and construction.

Metric 18-8 Stainless Steel
Slotted Flat Head Screws

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These metric 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic.

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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)