5306-01-123-5631

Find complete technical information, availability, and procurement data for: 5306-01-123-5631
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-123-5631

Item Name Code

27851

Assigment Date

12/15/1981 (44 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.

undercut hexagon head style, 2.660 inches minimum and 2.690 inches maximum fastener length, right-hand thread direction, 3a thread class, 0.400 inches minimum and 0.450 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: 3a
Thread Direction: right-hand
Thread Length: 0.400 inches minimum and 0.450 inches maximum
Fastener Length: 2.660 inches minimum and 2.690 inches maximum
Head Style: undercut hexagon
Head Height: 0.125 inches minimum and 0.140 inches maximum
Width Between Flats: 0.430 inches minimum and 0.439 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Nominal Thread Diameter: 0.250 inches
Grip Length: 2.240 inches minimum and 2.260 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 140000 pounds per square inch
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Special Features: furnished with strip type locking feature on thds
Material: iron alloy 660 overall
Material Document And Classification: ams5732 assn std single material response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1224 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
NAS1224C36L	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-123-5631?

The FSCG of the NSN 5306-01-123-5631 is 5306

Does the NSN 5306-01-123-5631 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-123-5631 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 5306-01-123-5631 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-123-5631 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 5306-01-123-5631 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, Dec 15, 1981