PartsTable TECHNICAL DATA SHEET
NSN 4940-00-406-4631Government record, cited

Adapter, Coupling4940-00-406-4631

NSN 4940-00-406-4631 · NIIN 004064631 · Part number X281A
Hewlett-Packard Company Dba HP · FSC 4940 — Miscellaneous Maintenance and Repair Shop Specialized Equipment · FSG 49 — Maintenance and Repair Shop Equipment · CAGE 28480
Government record, cited
NSN 4940-00-406-4631 — this item is cataloged by the U.S. Government under National Stock Number 4940-00-406-4631. Manufacturer of record part number: X281A.
Also searched as  4940-00-406-4631 · 4940004064631 · NIIN 004064631 · 00-406-4631 · FSC 4940 Miscellaneous Maintenance and Repair Shop Specialized Equipment · CAGE 28480 · X281A · 11731048
Nearby stock numbers  ·
Features
  • Adapter,coupling — FSC 4940
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Hewlett-Packard Company Dba HP
Identification
  • NSN: 4940-00-406-4631
  • NIIN: 004064631
  • FSC: 4940 — Miscellaneous Maintenance and Repair Shop Specialized Equipment
  • FSG: 49 — Maintenance and Repair Shop Equipment
  • Primary part number: X281A
  • Manufacturer: Hewlett-Packard Company Dba HP
General Description

The Adapter,coupling, cataloged under National Stock Number 4940-00-406-4631, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Hewlett-Packard Company Dba HP. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts
Item NameAdapter,coupling
FSC / FSG4940 — Miscellaneous Maintenance and Repair Shop Specialized Equipment (FSG 49)
ManufacturersHewlett-Packard Company Dba HP (CAGE 28480); Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (CAGE 19200)
Technical Specifications
ParameterValue
NSN4940-00-406-4631
Primary Part NumberX281A
Item NameAdapter,coupling
FSC / FSG4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment
ManufacturerHewlett-Packard Company Dba HP
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
⇄ Related Items 2
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5985-00-553-6082X281A POSSIBLE MATCH
ADAPTER,WAVEGUIDE
Possible match (shared part number)Agilent Technologies, Inc. Div Agilent Technologies Headquarters
5985-01-665-5796X281A POSSIBLE MATCH
ADAPTER,WAVEGUIDE
Possible match (shared part number)Keysight Technologies Inc
Cross-Reference Index
Part NumberManufacturer
X281A PRIMARY Hewlett-Packard Company Dba HP (USA)
11731048 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
Related Parts
5985-00-553-6082POSSIBLE MATCH
ADAPTER,WAVEGUIDE
X281A
5985-01-665-5796POSSIBLE MATCH
ADAPTER,WAVEGUIDE
X281A

Frequently Asked Questions

What is NSN 4940-00-406-4631?

NSN 4940-00-406-4631 is a Adapter,coupling, manufactured by Hewlett-Packard Company Dba HP, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.

What part numbers are listed for NSN 4940-00-406-4631?

NSN 4940-00-406-4631 has 2 manufacturer part numbers on file: X281A (Hewlett-Packard Company Dba HP), 11731048 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).

What NSN replaces 4940-00-406-4631?

2 possible matches (shared part number, not a government interchangeability claim): 5985-00-553-6082, 5985-01-665-5796. Verify interchangeability with system specifications before substitution.

Is NSN 4940-00-406-4631 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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