5306-01-244-5252

Find complete technical information, availability, and procurement data for: 5306-01-244-5252
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-244-5252

Item Name Code

15903

Assigment Date

11/14/1986 (39 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.

dished hexagon head style, 4.063 inches minimum and 4.093 inches maximum fastener length, right-hand thread direction, 0.578 inches nominal thread length, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.578 inches nominal
Fastener Length: 4.063 inches minimum and 4.093 inches maximum
Head Style: dished hexagon
Head Height: 0.188 inches minimum and 0.203 inches maximum
Width Between Flats: 0.553 inches minimum and 0.564 inches maximum
Hole Diameter: 0.070 inches minimum and 0.080 inches maximum
Grip Diameter: 0.3731 inches minimum and 0.3737 inches maximum
Shank Unthreaded Hole Diameter: 0.106 inches minimum and 0.116 inches maximum first hole
Nominal Thread Diameter: 0.375 inches
Grip Length: 3.490 inches minimum and 3.510 inches maximum
Hole Quantity: 3
Hole Type: drilled
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Hole Configuration Style: hexagon corners
Distance From Head Largest Bearing Surface To Shank Hole Center: 3.875 inches minimum and 3.890 inches maximum first hole
Surface Finish: 32.0 microinches head
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Material: steel overall
Material Document And Classification: mil-b-7838 mil spec single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type ii,class 2 fed spec single treatment response overall
Thread Series Designator: unjf

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
NAS1306-56D	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-244-5252?

The FSCG of the NSN 5306-01-244-5252 is 5306

Does the NSN 5306-01-244-5252 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-244-5252 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 5306-01-244-5252 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-244-5252 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 5306-01-244-5252 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Nov 14, 1986