3D0028-4-12

View detailed technical data, stock status, and sourcing information for: 3D0028-4-12
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-341-9351

Item Name Code

15903

Assigment Date

07/12/1991 (35 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, 0.484 inches nominal thread length, right-hand thread direction, 1.219 inches minimum and 1.249 inches maximum fastener length, spline extended washer head style

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: 0.484 inches nominal
Fastener Length: 1.219 inches minimum and 1.249 inches maximum
Head Style: spline extended washer
Head Height: 0.250 inches nominal
Extended Washer Diameter: 0.460 inches minimum and 0.470 inches maximum
Extended Washer Thickness: 0.036 inches nominal
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Head Minor Diameter: 0.318 inches minimum and 0.324 inches maximum
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.750 inches nominal
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 180000 pounds per square inch
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Material: nickel alloy 718 overall
Material Document And Classification: ams 5662 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: 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
3447-4-12	Shear Bolt
3D0028-4-12	Shear Bolt
84268-4-12	Shear Bolt
AIC872-4-12	Shear Bolt
PBF1593-4-12	Shear Bolt
VCG0038-4-12	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-341-9351?

The FSCG of the NSN 5306-01-341-9351 is 5306

Does the NSN 5306-01-341-9351 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5306-01-341-9351 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 5306-01-341-9351 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-341-9351 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 5306-01-341-9351 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Fri, Jul 12, 1991