5306-01-127-3751

Find complete technical information, availability, and procurement data for: 5306-01-127-3751
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-127-3751

Item Name Code

27851

Assigment Date

02/27/1982 (44 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.

right-hand thread direction, hexagon head style, 0.720 inches minimum and 0.725 inches maximum fastener length, 3a thread class, 0.250 inches minimum and 0.280 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: 0.250 inches minimum and 0.280 inches maximum
Fastener Length: 0.720 inches minimum and 0.725 inches maximum
Head Style: hexagon
Head Height: 0.090 inches nominal
Width Between Flats: 0.250 inches nominal
Grip Diameter: 0.1871 inches minimum and 0.1873 inches maximum
Shank Unthreaded Hole Diameter: 0.062 inches minimum and 0.067 inches maximum first hole
Nominal Thread Diameter: 0.190 inches
Grip Length: 0.470 inches nominal
Thread Quantity Per Inch: 32
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center: 0.640 inches nominal first hole
Surface Finish: 63.0 microinches grip
Material: steel comp 630 overall
Material Document And Classification: ams 5643 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unf

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
172B4135P1	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-127-3751?

The FSCG of the NSN 5306-01-127-3751 is 5306

Does the NSN 5306-01-127-3751 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-127-3751 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 5306-01-127-3751 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-127-3751 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 5306-01-127-3751 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sat, Feb 27, 1982