5305-01-056-5441

Find complete technical information, availability, and procurement data for: 5305-01-056-5441
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-056-5441

Item Name Code

16282

Assigment Date

02/25/1978 (48 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.

right-hand thread direction, 0.407 inches minimum and 0.438 inches maximum fastener length, 2a thread class, flat countersunk head style, 0.285 inches minimum and 0.387 inches maximum thread length

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
Thread Length: 0.285 inches minimum and 0.387 inches maximum
Fastener Length: 0.407 inches minimum and 0.438 inches maximum
Head Style: flat countersunk
Head Diameter: 0.249 inches minimum and 0.279 inches maximum
Locking Feature: pellet threads
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 55000 pounds per square inch
Countersink Angle: 100.0 degrees nominal
Material: steel comp 1010 overall
Surface Treatment: cadmium 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
GS551A-06S7	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-056-5441?

The FSCG of the NSN 5305-01-056-5441 is 5305

Does the NSN 5305-01-056-5441 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-056-5441 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 5305-01-056-5441 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-056-5441 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 5305-01-056-5441 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Sat, Feb 25, 1978