3040-00-421-1679

Find complete technical information, availability, and procurement data for: 3040-00-421-1679
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3040 Miscellaneous Power Transmission Equipment

National Stock Number

3040-00-421-1679

Item Name Code

18249

Assigment Date

03/14/1969 (57 years ago)

unf first end screw thread series designator, not identical end similarity, 4.410 inches nominal overall length, 0.261 inches nominal first end, fifth portion thread length, right-hand first end, fifth portion shaft thread direction

Product Characteristics

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

End Similarity: not identical
Thread Length: 0.261 inches nominal first end, fifth portion
Overall Length: 4.410 inches nominal
Screw Thread Series Designator: unf first end
Shaft Thread Direction: right-hand first end, fifth portion
Teeth Hardness Rating: 26.0 rockwell c minimum and 31.0 rockwell c maximum
Worm Thread Quantity: 1
Worm Thread Lead: 0.125 inches nominal
Worm Thread Direction: left-hand
Worm Pressure Angle In Deg: 14.500
Worm Helix Angle: 5 deg 11 min
Worm Outside Diameter: 0.513 inches minimum and 0.518 inches maximum
Worm Pitch Diameter: 0.436 inches minimum and 0.438 inches maximum
Shaft Hardness Rating: 26.0 rockwell c minimum and 31.0 rockwell c maximum
Worm Thread Section Length: 0.740 inches minimum and 0.750 inches maximum
Worm Body Length: 0.740 inches minimum and 0.750 inches maximum
Worm Body Tapered Bearing Surface End: not provided
Shaft Location: both ends of worm
Straight Unthreaded Length: 0.1015 inches minimum first end, sixth portion
Straight Unthreaded Length: 0.105 inches minimum first end, first portion
Straight Unthreaded Length: 0.1115 inches maximum first end, sixth portion
Straight Unthreaded Length: 0.130 inches maximum first end, first portion
Straight Unthreaded Length: 0.205 inches minimum first end, third portion
Straight Unthreaded Length: 0.2125 inches minimum second end, first portion
Straight Unthreaded Length: 0.215 inches maximum first end, third portion
Straight Unthreaded Length: 0.2425 inches maximum second end, first portion
Straight Unthreaded Length: 0.250 inches maximum first end, fourth portion
Straight Unthreaded Length: 0.250 inches maximum first end, second portion
Straight Unthreaded Length: 0.240 inches minimum first end, fourth portion
Straight Unthreaded Length: 0.240 inches minimum first end, second portion
Straight Unthreaded Length: 0.500 inches minimum second end, second portion
Straight Unthreaded Length: 0.510 inches maximum second end, second portion
Straight Unthreaded Length: 1.750 inches nominal second end, third portion
Straight Unthreaded Section Diameter: 0.240 inches minimum first end, sixth portion
Straight Unthreaded Section Diameter: 0.240 inches minimum second end, second portion
Straight Unthreaded Section Diameter: 0.250 inches maximum first end, sixth portion
Straight Unthreaded Section Diameter: 0.250 inches maximum second end, second portion
Straight Unthreaded Section Diameter: 0.277 inches minimum first end, second portion
Straight Unthreaded Section Diameter: 0.279 inches maximum first end, second portion
Straight Unthreaded Section Diameter: 0.311 inches maximum second end, third portion
Straight Unthreaded Section Diameter: 0.310 inches minimum first end, first portion
Straight Unthreaded Section Diameter: 0.310 inches minimum second end, first portion
Straight Unthreaded Section Diameter: 0.310 inches minimum second end, third portion
Straight Unthreaded Section Diameter: 0.3146 inches minimum first end, fourth portion
Straight Unthreaded Section Diameter: 0.330 inches minimum first end, third portion
Straight Unthreaded Section Diameter: 0.3150 inches maximum first end, fourth portion
Straight Unthreaded Section Diameter: 0.320 inches maximum first end, first portion
Straight Unthreaded Section Diameter: 0.320 inches maximum second end, first portion
Straight Unthreaded Section Diameter: 0.340 inches maximum first end, third portion
Material: steel corrosion resisting
Surface Treatment: passivate
Fsc Application Data: mount,telescope

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
10512780	Worm Shaft

FAQs

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

What is the FSCG of the NSN 3040-00-421-1679?

The FSCG of the NSN 3040-00-421-1679 is 3040

Does the NSN 3040-00-421-1679 have a Schedule B code assigned?

Yes, the Schedule B code is 8483105000

Does NSN 3040-00-421-1679 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 3040-00-421-1679 contain precious materials?

Item does not contain precious metal.

Does NSN 3040-00-421-1679 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 3040-00-421-1679 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Mar 14, 1969