5306-01-256-6838

Find complete technical information, availability, and procurement data for: 5306-01-256-6838
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-256-6838

Item Name Code

15903

Assigment Date

06/08/1987 (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.

3a thread class, 0.848 inches minimum and 0.898 inches maximum thread length, right-hand thread direction, 4.608 inches minimum and 4.638 inches maximum fastener length, double hexagon extended washer head style

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: 0.848 inches minimum and 0.898 inches maximum
Fastener Length: 4.608 inches minimum and 4.638 inches maximum
Head Style: double hexagon extended washer
Head Height: 0.608 inches minimum and 0.628 inches maximum
Width Between Flats: 0.682 inches minimum and 0.691 inches maximum
Extended Washer Diameter: 1.040 inches minimum and 1.050 inches maximum
Extended Washer Thickness: 0.140 inches minimum and 0.160 inches maximum
Grip Diameter: 0.6230 inches minimum and 0.6240 inches maximum
Nominal Thread Diameter: 0.625 inches
Grip Length: 3.740 inches minimum and 3.760 inches maximum
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 39.0 rockwell c minimum and 43.0 rockwell c maximum overall
Material: steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas630 professional/industrial association standard

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
NAS630-60	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-256-6838?

The FSCG of the NSN 5306-01-256-6838 is 5306

Does the NSN 5306-01-256-6838 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-256-6838 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 5306-01-256-6838 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-256-6838 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 5306-01-256-6838 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Jun 8, 1987