External 12 Point Plugs | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

0-80
2-56
4-40
6-32
8-32
10-24
10-32
1/4"-20
1/4"-28
M2
M2.5
M3
M3.5
M4
M5
M6
M8

	Length Length

	Head Type Head Type


Rounded	Flat

	Material Material

Brass

Stainless Steel

	Drive Style Drive Style	Show

Phillips

	Drive Style Drive Style	Hide

Tamper-Resistant Torx

	O-Ring Material O-Ring Material

Buna-N Rubber

Fluoroelastomer Rubber

Silicone Rubber

Viton® Fluoroelastomer
Rubber

Rubber

	Head Height Head Height

	Head Diameter Head Diameter

	Screw Features Screw Features

	Sealing

	Flat Head Profile Flat Head Profile


Undercut	Standard

	Thread Type Thread Type

Metric

UNC

UNF

	Rounded Head Style Rounded Head Style

	Pan

	Countersink Angle Countersink Angle

82°

90°

100°

	Threading Threading

	Fully Threaded

	Maximum O-Ring Temperature Maximum O-Ring Temperature

	Drive Size Drive Size

	Thread Direction Thread Direction

	Right Hand

	Minimum O-Ring Temperature Minimum O-Ring Temperature

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Maximum Pressure Maximum Pressure

1,500 psi

6,000 psi

20,000 psi

	For Maximum Hole Diameter For Maximum Hole Diameter

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447 Products

Fasteners

Metric Sealing Pan Head Screws

These metric screws have a silicone O-ring that prevents leaks and seals out contaminants. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

Sealing Pan Head Screws

A rubber O-ring prevents leaks and seals out contaminants. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic.

Vibration-Resistant Sealing Rounded Head Screws

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

Sealing Flat Head Screws

With an O-ring under the head, these screws prevent leaks and seal out contaminants.

Metric Sealing Flat Head Screws

To prevent leaks and seal out contaminants, these metric screws have an O-ring under the head.

Sealing Blunt Screws for Sheet Metal

A rubber O-ring under the head creates a seal that withstands liquid and gas pressure.

Male Fabric Snap Halves with Tapping Screw Stud

Pair with a female snap half to create a complete snap.

Fabric Snaps with Threaded Stud

The threaded stud installs in threaded holes.

Fabric Snaps with Drilling Screw Stud

The drilling screw stud drills its own hole.