18A1748-1

View detailed technical data, stock status, and sourcing information for: 18A1748-1
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-504-2637

Item Name Code

60804

Assigment Date

01/23/2003 (23 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

30003 end item source, straight design form, a/s32a-31a model number of tow tractor and od 14 end item identification, 0.0830 inches nominal wall thickness, tow tractors rear exh pipe a/s32a-31a end item name

Product Characteristics

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

Wall Thickness: 0.0830 inches nominal
End Item Identification: a/s32a-31a model number of tow tractor and od 14
End Item Source: 30003
Design Form: straight
End Item Name: tow tractors rear exh pipe a/s32a-31a
Usage Location: exhaust pipe
Criticality Code Justification: feat
Nominal Outside Diameter: 2.250 inches
Nominal Overall Length: 53.000 inches
Special Features: needs spark arrestor to prevent a back fire aboard ship
Material: aluminum alloy

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
18A1748-1	Exhaust Pipe

FAQs

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

What is the FSCG of the NSN 2990-01-504-2637?

The FSCG of the NSN 2990-01-504-2637 is 2990

Does the NSN 2990-01-504-2637 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-504-2637 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 2990-01-504-2637 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-504-2637 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 2990-01-504-2637 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Thu, Jan 23, 2003