BACB30FD12-50Y

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-280-9356

Item Name Code

04905

Assigment Date

06/15/1988 (38 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

3a thread class, 4.203 inches minimum and 4.233 inches maximum fastener length, 1.068 inches minimum and 1.118 inches maximum thread length, double hexagon w/hole head style, right-hand thread direction

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: 1.068 inches minimum and 1.118 inches maximum
Fastener Length: 4.203 inches minimum and 4.233 inches maximum
Head Style: double hexagon w/hole
Head Height: 0.084 inches minimum and 0.104 inches maximum
Width Between Flats: 0.792 inches minimum and 0.812 inches maximum
Extended Washer Diameter: 1.220 inches minimum and 1.230 inches maximum
Extended Washer Thickness: 0.168 inches minimum and 0.188 inches maximum
Shoulder Diameter: 0.7792 inches minimum and 0.7802 inches maximum first shoulder
Shoulder Length: 3.115 inches minimum and 3.135 inches maximum first shoulder
Nominal Thread Diameter: 0.750 inches
Thread Quantity Per Inch: 16
Minimum Tensile Strength: 180000 pounds per square inch
Shoulder Shape: round first shoulder
Material: steel comp e4340 or steel comp 8740 overall
Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 1st material response overall
Surface Treatment: cadmium or chromate overall
Surface Treatment Document And Classification: nas672 assn std 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
BACB30FD12-50Y	Shoulder Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-280-9356?

The FSCG of the NSN 5306-01-280-9356 is 5306

Does the NSN 5306-01-280-9356 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-280-9356 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 5306-01-280-9356 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-280-9356 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 5306-01-280-9356 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Wed, Jun 15, 1988