BB-F-139

View detailed technical data, stock status, and sourcing information for: BB-F-139
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-249-2920

Item Name Code

22247

Assigment Date

02/09/1987 (39 years ago)

A relatively thin metal item of various shapes, having two or more bolt holes and locking ears or tabs. The item is designed to be inserted on the bolts and the ears or tabs bent against the wrenching flat(s) of the bolt head or nut to restrict loosening of the bolt or nut. The locking ears or tabs may be prebent. See also retainer, nut and bolt.

2.250 inches minimum and 2.281 inches maximum distance between mounting hole centers, 1.062 inches minimum and 1.125 inches maximum body width, 0.781 inches minimum and 0.812 inches maximum mounting hole diameter, 0.050 inches nominal plate thickness, flat cross-sectional shape style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: flat
Mounting Hole Diameter: 0.781 inches minimum and 0.812 inches maximum
Body Width: 1.062 inches minimum and 1.125 inches maximum
Plate Thickness: 0.050 inches nominal
Distance Between Mounting Hole Centers: 2.250 inches minimum and 2.281 inches maximum
Angle Between Ears In Deg: 45.0
Ear Width: 0.281 inches minimum and 0.344 inches maximum
Criticality Code Justification: zzzw
Material: nickel alloy 400
Material Document And Classification: qq-n-281, class a fed spec single material response
Style Designator: socket
Specification/Standard Data: 81348-qq-n-281 government specification and 96906-mil-std-763 government standard and 96906-mil-std-129 government standard and 81349-mil-i-45208 government specification
Departure From Cited Document: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

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
845-4363737ITEM53	Nut and Bolt Locking Plate
BB-F-139	Nut and Bolt Locking Plate

FAQs

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

What is the FSCG of the NSN 5340-01-249-2920?

The FSCG of the NSN 5340-01-249-2920 is 5340

Does the NSN 5340-01-249-2920 have a Schedule B code assigned?

Yes, the Schedule B code is 8509904050

Does NSN 5340-01-249-2920 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 5340-01-249-2920 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-249-2920 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-249-2920 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Feb 9, 1987