BACB30US3K12H

View detailed technical data, stock status, and sourcing information for: BACB30US3K12H
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-445-3708

Item Name Code

15903

Assigment Date

05/30/1997 (29 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.

1.125 inches minimum and 1.155 inches maximum fastener length, 0.390 inches nominal thread length, double hexagon extended washer head style, right-hand thread direction, 3a thread class

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: 0.390 inches nominal
Fastener Length: 1.125 inches minimum and 1.155 inches maximum
Head Style: double hexagon extended washer
Head Height: 0.200 inches nominal
Width Between Flats: 0.243 inches minimum and 0.251 inches maximum
Extended Washer Diameter: 0.359 inches minimum and 0.369 inches maximum
Extended Washer Thickness: 0.050 inches nominal
Hole Diameter: 0.050 inches minimum and 0.060 inches maximum
Grip Diameter: 0.1885 inches minimum and 0.1895 inches maximum
End Item Identification: b-1b
Nominal Thread Diameter: 0.190 inches
Grip Length: 0.740 inches minimum and 0.760 inches maximum
Hole Quantity: 4
Hole Type: drilled
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 220000 pounds per square inch
Hole Configuration Style: double hexagon flats
Special Features: requested name-tension bolt
Color: black threads
Material: nickel alloy 718 overall
Material Document And Classification: ams 5662 assn std single material response overall
Surface Treatment: aluminum overall
Surface Treatment Document And Classification: mil-c-85614 mil 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
BACB30US3K12H	Shear Bolt
LE111-0067A3312	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-445-3708?

The FSCG of the NSN 5306-01-445-3708 is 5306

Does the NSN 5306-01-445-3708 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5306-01-445-3708 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 5306-01-445-3708 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-445-3708 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 5306-01-445-3708 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Fri, May 30, 1997