256-25

View detailed technical data, stock status, and sourcing information for: 256-25

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256-25
Federal Supply Group
Mechanical Power Transmission Equipment
National Stock Number
3020-01-204-0668
Item Name Code
05466
Assigment Date
03/22/1985 (41 years ago)

A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.

0.3906 inches nominal pitch diameter, plain both ends bore style, plain, solid body style, 0.422 inches nominal outside diameter, 25 teeth quantity

Product Characteristics

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

Body Style
plain, solid
Pitch Diameter
0.3906 inches nominal
Teeth Quantity
25
Bore Style
plain both ends
Nominal Outside Diameter
0.422 inches
Tooth Form
standard
Pressure Angle
20.0000 degrees
Nominal Distance Between Body Face And Protruding Hub End
0.250 inches first end
Face Nominal Width
0.125 inches
Bore Nominal Diameter
0.125 inches both ends
Hub Style Designator
pinned first end
Hub Nominal Diameter
0.312 inches first end
Material
steel overall
Material Document And Classification
mil-f-7720 mil spec single material response overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
mil-f-14072,finish e300 mil spec single treatment response overall
Style Designator
protruding hub

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
256-25 Spur Gear
419977 Spur Gear
419977-6 Spur Gear
S10-25-FF Spur Gear

FAQs

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

What is the FSCG of the NSN 3020-01-204-0668?
The FSCG of the NSN 3020-01-204-0668 is 3020
Does the NSN 3020-01-204-0668 have a Schedule B code assigned?
Yes, the Schedule B code is 8483409000
Does NSN 3020-01-204-0668 require demilitarization?
Usml items - mutilation to the point of scrap required worldwide. (note 7).
Does NSN 3020-01-204-0668 contain precious materials?
Item does not contain precious metal.
Does NSN 3020-01-204-0668 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 3020-01-204-0668 was assigned to the Federal Catalog?
It was assigned 41 years ago, on Fri, Mar 22, 1985

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