457-83

View detailed technical data, stock status, and sourcing information for: 457-83
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-251-0904

Item Name Code

61446

Assigment Date

03/12/1987 (39 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.

2990-01-251-0904, muffler- protective cap assembly

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
457-83	Muffler- Protective Cap Assembly

FAQs

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

What is the FSCG of the NSN 2990-01-251-0904?

The FSCG of the NSN 2990-01-251-0904 is 2990

Does the NSN 2990-01-251-0904 have a Schedule B code assigned?

Yes, the Schedule B code is 8412909080

Does NSN 2990-01-251-0904 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 2990-01-251-0904 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-251-0904 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 2990-01-251-0904 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Mar 12, 1987