BMN4122A-8

View detailed technical data, stock status, and sourcing information for: BMN4122A-8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-119-7708

Item Name Code

05277

Assigment Date

12/27/1972 (53 years ago)

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.

prevailing torque all metal design locking feature, hexagon nut style, right-hand thread direction, dry film lubricant lubrication, 3b 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: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Lubrication: dry film lubricant
Nut Style: hexagon
Nut Height: 0.328 inches maximum
Width Across Flats: 0.741 inches minimum and 0.752 inches maximum
Temp Rating: 450.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 20
Hardness Rating: 34.0 rockwell c minimum and 41.0 rockwell c maximum
Nominal Thread Size: 0.500 inches
Countersink Angle: 120.0 degrees nominal nut
Bearing Surface Type: chamfered or washer faced
Material: steel comp 8740 or steel comp 4130 or steel comp e4340 overall
Material Document And Classification: mil-s-6049 mil spec 1st material response or ams 6322 assn std 1st material response or ams 6350 fed spec 2nd material response or ams 6378 fed spec 2nd material response or mil-s-18729 mil spec 2nd material response or mil-s-5000 mil spec 3rd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response overall

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
48FT820	Hexagon Self-Locking Nut
BACN10JC8	Hexagon Self-Locking Nut
BMN4122A-8	Hexagon Self-Locking Nut
H10-8BAC	Hexagon Self-Locking Nut
RMLH9074-8	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-119-7708?

The FSCG of the NSN 5310-00-119-7708 is 5310

Does the NSN 5310-00-119-7708 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-119-7708 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 5310-00-119-7708 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-119-7708 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 5310-00-119-7708 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Dec 27, 1972