5306-00-326-4775

Find complete technical information, availability, and procurement data for: 5306-00-326-4775
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-326-4775

Item Name Code

27851

Assigment Date

12/03/1973 (52 years ago)

An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

3a thread class, right-hand thread direction, hexagon head style, 0.428 inches minimum and 0.478 inches maximum thread length, 1.938 inches minimum and 1.968 inches maximum fastener 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: 0.428 inches minimum and 0.478 inches maximum
Fastener Length: 1.938 inches minimum and 1.968 inches maximum
Head Style: 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: 0.4365 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: 0.438 inches
Grip Length: 1.490 inches minimum and 1.510 inches maximum
Thread Quantity Per Inch: 20
Distance From Head Largest Bearing Surface To Shank Hole Center: 1.803 inches minimum and 1.853 inches maximum first hole
Surface Finish: 16.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Material: titanium alloy overall
Material Document And Classification: nas 621 assn std single material response or ams 4928 assn std single material response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas657 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
NAS657V24D	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-326-4775?

The FSCG of the NSN 5306-00-326-4775 is 5306

Does the NSN 5306-00-326-4775 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5306-00-326-4775 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 5306-00-326-4775 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-326-4775 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 5306-00-326-4775 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, Dec 3, 1973