PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1251-5318Contact,electrical

Keysight Technologies Inc · NSN 5999-01-109-9722 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-109-9722 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-109-9722. Primary manufacturer part number: 1251-5318.
Features
  • Contact,electrical — FSC 5999
  • 4 verified cross-references
  • Primary manufacturer: Keysight Technologies Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Contact,electrical, cataloged under National Stock Number 5999-01-109-9722, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Keysight Technologies Inc. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameContact,electrical
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersHewlett-Packard Company Dba HP (CAGE 28480); Keysight Technologies, Inc. (CAGE 1LQK8); Te Connectivity Corporation (CAGE 00779); Keysight Technologies Inc (CAGE 7ZXR5)
Successor NSN5998-01-413-5434 — Circuit Card Assembly
Technical Specifications
ParameterValue
NSN5999-01-109-9722
Primary Part Number1251-5318
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerKeysight Technologies Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 12
Circuit Card Assembly
4720-00-290-868320427 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5999-00-394-0380136-0384-00 INTERCHANGEABLE
Contact,electrical
Tektronix, Inc.
1270-00-671-894052120 INTERCHANGEABLE
Waveguide Assy
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5950-00-942-4801 INTERCHANGEABLE
Transformer,power
2815-01-255-8633 INTERCHANGEABLE
Exhaust,riser Tubbo
2815-01-303-2576412105 INTERCHANGEABLE
Push Rod,engine Poppet Valve
Augusta Engine Parts, Inc. Dba Augusta Engine Parts, Inc.
3455-01-312-552618021-F209 INTERCHANGEABLE
Cutter,milling,end
F & D Tool Co Inc
3040-01-320-8275 INTERCHANGEABLE
Shaft,straight
8145-01-465-368756120-000 INTERCHANGEABLE
Storage Container,flexible
Aar Manufacturing, Inc. Dba Aar Mobility Systems
Cross-Reference Index
Part NumberManufacturer
1251-5318 Hewlett-Packard Company Dba HP (USA)
1251-5318 Keysight Technologies, Inc. (USA)
52120 Te Connectivity Corporation (USA)
1251-5318 PRIMARY Keysight Technologies Inc (USA)
Related Parts
5998-01-413-5434SUCCESSOR
CIRCUIT CARD ASSEMBLY
4720-00-290-8683INTERCHANGEABLE
HOSE,PREFORMED
20427
5999-00-394-0380INTERCHANGEABLE
CONTACT,ELECTRICAL
136-0384-00
1270-00-671-8940INTERCHANGEABLE
WAVEGUIDE ASSY
52120
5950-00-942-4801INTERCHANGEABLE
TRANSFORMER,POWER
2815-01-255-8633INTERCHANGEABLE
EXHAUST,RISER TUBBO
2815-01-303-2576INTERCHANGEABLE
PUSH ROD,ENGINE POPPET VALVE
412105
3455-01-312-5526INTERCHANGEABLE
CUTTER,MILLING,END
18021-F209
3040-01-320-8275INTERCHANGEABLE
SHAFT,STRAIGHT
8145-01-465-3687INTERCHANGEABLE
STORAGE CONTAINER,FLEXIBLE
56120-000
5985-01-480-2878INTERCHANGEABLE
SWITCH,WAVEGUIDE
G706006-1
4710-01-491-4260INTERCHANGEABLE
TUBE,METALLIC
52120 FIND 48

Frequently Asked Questions

What is NSN 5999-01-109-9722?

NSN 5999-01-109-9722 is a Contact,electrical, manufactured by Keysight Technologies Inc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-109-9722?

NSN 5999-01-109-9722 has 4 cross-referenced part numbers: 1251-5318 (Hewlett-Packard Company Dba HP), 1251-5318 (Keysight Technologies, Inc.), 52120 (Te Connectivity Corporation), 1251-5318 (Keysight Technologies Inc).

What NSN replaces 5999-01-109-9722?

There are 12 known substitutes for 5999-01-109-9722: 5998-01-413-5434, 4720-00-290-8683, 5999-00-394-0380 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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