Military Standard

Military Standard MS21900-4 Steel Nipple, Boss

Manufacturer part number MS21900-4 · NSN 4730-00-541-1579 · Hydraulic fittings

MPN: MS21900-4
NSN: 4730-00-541-1579
Category: Hydraulic fittings
Pack: SGP135001 · Pack Quantity 1

MS21900-4 is listed in the PartsPerk catalog for sourcing requests. Seller SKU SGP135001. Manufacturer: Military Standard. Military Standard MS21900-4 Steel Nipple, Boss. This page does not claim stock, price, or approved interchange.

Request sourcing Compare fields Search this PN Check evidence package Back to category Catalog directory

Stock, price, and certification gaps can be filed through the Aviation Evidence Network — this link opens identity review; it does not invent availability or certificates.

Source record (as observed)

Verbatim ingest text — kept for provenance, not rewritten. The structured specifications below break the same facts into individually labeled fields.

Approvals and Conformities NSN 4730-00-541-1579 Product Attributes Country of Origin United States Shipping Weight 0.01 pounds ECCN 9A991.d Manufacturer P/N MS21900-4 Schedule B Code 7307.99.4000 Pack Quantity 1 Ship Dimensions 3 x 1 x 1 inches Mater

Specifications & observed attributes

Structured fields from the owned catalog observation. Source assertions are not live certificates, stock, or prices.

Manufacturer P/N (source assertion only): MS21900-4
Country of Origin: United States
Material: Stainless Steel
ECCN (source assertion only): 9A991.d
Schedule B (source assertion only): 7307.99.4000
Observed pack description: Each
Observed unit of measure

Identifiers

PN MS21900-4
SKU SGP135001
LEGACY_SELLER_SKU SGP135001
MANUFACTURER_PART_NUMBER MS21900-4
NSN 4730-00-541-1579

More in Hydraulic fittings

Published rows filed under the same observed category. Shared category is a filing grouping only — it is not an interchange, supersession, or fit claim.

Sourcing context

Where this identity sits in the catalog, which buyer contexts route through it, and which markets are in sourcing scope.

PartsPerk catalog pages show PartsPerk-owned observations only. They are not live stock, not certification, and not OEM affiliation. Exact PN/NSN identity is for sourcing review; publication and sellability require separate approval.