5305-01-562-5549

Find complete technical information, availability, and procurement data for: 5305-01-562-5549
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-562-5549

Item Name Code

06660

Assigment Date

04/10/2008 (18 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

0.195 inches minimum and 0.208 inches maximum head diameter, pan no. 2 head style, 2a thread class, 0.418 inches minimum and 0.438 inches maximum fastener length, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Fastener Length: 0.418 inches minimum and 0.438 inches maximum
Head Style: pan no. 2
Head Diameter: 0.195 inches minimum and 0.208 inches maximum
Head Height: 0.070 inches minimum and 0.080 inches maximum
Washer Quantity: 2
Internal Drive Style: cross recess type ii
Nominal Thread Diameter: 0.122 inches
Thread Quantity Per Inch: 40
Secondary Washer Relationship To Primary Washer: not identical
Secondary Washer Style: flat
Primary Washer Outside Diameter: 0.195 inches minimum and 0.208 inches maximum
Secondary Washer Outside Diameter: 0.204 inches minimum and 0.224 inches maximum
Primary Washer Style: split helical ring
Primary Washer Material Thickness: 0.031 inches minimum and 0.047 inches maximum
Secondary Washer Material Thickness: 0.028 inches minimum and 0.036 inches maximum
Part Name Assigned By Controlling Agency: screw, pan head, phillips, double sems
Color: black overall
Material: steel property class 18.8 fastener
Material: steel property class 18.8 primary washer
Material: steel property class 18.8 secondary washer
Surface Treatment: oxide overall
Surface Treatment Document And Classification: mil-dtl-13924. cl 4 mil spec single treatment response overall
Thread Series Designator: unc

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
A3307785-13	Assembled Washer Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-562-5549?

The FSCG of the NSN 5305-01-562-5549 is 5305

Does the NSN 5305-01-562-5549 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-562-5549 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-562-5549 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-562-5549 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-562-5549 was assigned to the Federal Catalog?

It was assigned 18 years ago, on Thu, Apr 10, 2008