2990-01-103-4002

Find complete technical information, availability, and procurement data for: 2990-01-103-4002
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-103-4002

Item Name Code

10849

Assigment Date

11/12/1980 (45 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

threaded single inlet inlet connection type, 6.170 inches nominal overall diameter, right-hand single inlet inlet thread direction, trencher,j i case,mdl 30+4 end item identification, 2.350 inches nominal overall length

Product Characteristics

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

Overall Length: 2.350 inches nominal
Inlet Connection Type: threaded single inlet
Inlet Thread Direction: right-hand single inlet
Overall Diameter: 6.170 inches nominal
End Item Identification: trencher,j i case,mdl 30+4
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 1
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally located in top single inlet
Inlet Thread Size: 1-5/8-12 single inlet
Inlet Thread Location: internal single inlet
Material: steel location not otherwise specified
Surface Treatment: paint

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
9241M	Exhaust Muffler
H247510	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-103-4002?

The FSCG of the NSN 2990-01-103-4002 is 2990

Does the NSN 2990-01-103-4002 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-103-4002 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 2990-01-103-4002 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-103-4002 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 2990-01-103-4002 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Wed, Nov 12, 1980