5306-01-238-8876

Find complete technical information, availability, and procurement data for: 5306-01-238-8876
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-238-8876

Item Name Code

15903

Assigment Date

08/21/1986 (40 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, 3.051 inches minimum and 3.081 inches maximum fastener length, dished hexagon head style, 0.456 inches minimum and 0.486 inches maximum thread 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: 3a
Thread Direction: right-hand
Thread Length: 0.456 inches minimum and 0.486 inches maximum
Fastener Length: 3.051 inches minimum and 3.081 inches maximum
Head Style: dished hexagon
Head Height: 0.219 inches minimum and 0.234 inches maximum
Width Between Flats: 0.679 inches minimum and 0.690 inches maximum
Grip Diameter: 0.4363 inches minimum and 0.4370 inches maximum
Shank Unthreaded Hole Diameter: 0.106 inches minimum and 0.116 inches maximum first hole
Nominal Thread Diameter: 0.437 inches
Grip Length: 2.178 inches minimum and 2.198 inches maximum
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum fastener
Distance From Head Largest Bearing Surface To Shank Hole Center: 2.509 inches minimum and 2.569 inches maximum first hole
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Special Features: assembly area extended at threaded end,0.402 min. and 0.412 max. length 0.369 min. and 0.372 max. diameter; assembly contains retainer pawl,material cres per ams 5643,rockwell hardness 35.0 min. and 39.0 max.,finish blast per bac 5951,passivate per qq-p-35,dry film lube per mil-l-8937; spring,material cres per ams 5673,rockwell hardness 48.0 min.,finish passivate per qq-p-35; pin and plugs,material 303 cres per astm a 582,finish passivate per qq-p-35
Material: steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150 fastener
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2 class 3 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
BACB30ST7-35	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-238-8876?

The FSCG of the NSN 5306-01-238-8876 is 5306

Does the NSN 5306-01-238-8876 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-238-8876 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 5306-01-238-8876 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-238-8876 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 5306-01-238-8876 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Aug 21, 1986