5306-01-047-7844

Find complete technical information, availability, and procurement data for: 5306-01-047-7844
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-047-7844

Item Name Code

27851

Assigment Date

09/13/1977 (48 years ago)

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

0.282 inches minimum and 0.333 inches maximum thread length, 2.168 inches minimum and 2.188 inches maximum fastener length, 3a thread class, undercut hexagon head style, 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: 0.282 inches minimum and 0.333 inches maximum
Fastener Length: 2.168 inches minimum and 2.188 inches maximum
Head Style: undercut hexagon
Head Height: 0.126 inches minimum and 0.141 inches maximum
Width Between Flats: 0.430 inches minimum and 0.439 inches maximum
Grip Diameter: 0.2483 inches minimum and 0.2492 inches maximum
Nominal Thread Diameter: 0.250 inches
Grip Length: 1.750 inches minimum and 1.766 inches maximum
Thread Quantity Per Inch: 28
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Special Features: retaining ring in shank
Material: steel comp e4340 or steel comp 4340 or steel comp 4140 or steel comp 8740 or steel comp 4130 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

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
121673-4-28	Close Tolerance Bolt
ST3M735-4-28	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-047-7844?

The FSCG of the NSN 5306-01-047-7844 is 5306

Does the NSN 5306-01-047-7844 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-047-7844 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 5306-01-047-7844 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-047-7844 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 5306-01-047-7844 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Tue, Sep 13, 1977