H444-0601-A7

View detailed technical data, stock status, and sourcing information for: H444-0601-A7
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-679-4209

Item Name Code

77777

Assigment Date

03/22/2019 (7 years ago)

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

nssn class submarine end item identification, refer to eb specification 4229; the polymer for the four muffler layers shall be rw-2577-82 i/a/w section 3.4.1; the filler material for the muffler layers shall be i/a/w section 2.1 of appendix a of the specification; the % fill for each layer shall be i/a/w table 1 of appendix a special test features, muffler/diffuser assembly requires shock qualification i/a/w section 072 of the nssn class ships specifications and ppd 802-6337447, ddam procedures; the following attributes apply: shock qualification method: analysis; shock test category: not available; shock grade: b; equipment test/analysis class: not available; equipment hold-down means: grade 500 size 1.250; material: qq-n-286 class a, specification: mil-s-1222h; shock test type: not available; mounting location (shipboard): wetted surface; mounting plane (shipboard): not available; mounting orientation (shipboard): not available; limitations: none; qualification approval document (if complete) is referenced in the document field within the part description(s) general characteristics item description, compound muffler part name assigned by controlling agency, noise control (submarine) supplementary features

Product Characteristics

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

End Item Identification: nssn class submarine
Part Name Assigned By Controlling Agency: compound muffler
Special Test Features: refer to eb specification 4229; the polymer for the four muffler layers shall be rw-2577-82 i/a/w section 3.4.1; the filler material for the muffler layers shall be i/a/w section 2.1 of appendix a of the specification; the % fill for each layer shall be i/a/w table 1 of appendix a
Supplementary Features: noise control (submarine)
General Characteristics Item Description: muffler/diffuser assembly requires shock qualification i/a/w section 072 of the nssn class ships specifications and ppd 802-6337447, ddam procedures; the following attributes apply: shock qualification method: analysis; shock test category: not available; shock grade: b; equipment test/analysis class: not available; equipment hold-down means: grade 500 size 1.250; material: qq-n-286 class a, specification: mil-s-1222h; shock test type: not available; mounting location (shipboard): wetted surface; mounting plane (shipboard): not available; mounting orientation (shipboard): not available; limitations: none; qualification approval document (if complete) is referenced in the document field within the part description(s)
Specification/Standard Data: 80204-ansi y14.5m-1982 professional/industrial association standard

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
515-6985002-31	Special Muffler
515-6985002-A7	Special Muffler
6985002	Special Muffler
H444-0601-31	Special Muffler
H444-0601-A7	Special Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-679-4209?

The FSCG of the NSN 2990-01-679-4209 is 2990

Does NSN 2990-01-679-4209 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 2990-01-679-4209 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-679-4209 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 2990-01-679-4209 was assigned to the Federal Catalog?

It was assigned 7 years ago, on Fri, Mar 22, 2019