PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-951Contact,electrical

Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc · NSN 5999-00-552-4618 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-552-4618 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-552-4618. Primary manufacturer part number: 21-951.
Features
  • Contact,electrical — FSC 5999
  • Material: COPPER ALLOY CONTACT
  • Terminal Type and Quantity: 1 WIRE LEAD W/LUG BACK
  • Mounting Facility Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.193 INCHES NOMINAL IN
  • Mounting Method: UNTHREADED HOLE(S)
  • Material: COPPER ALLOY CONTACT
  • Terminal Type and Quantity: 1 WIRE LEAD W/LUG BACK
Applications
  • Applications requiring Copper Alloy Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-552-4618, 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 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-552-4618
Primary Part Number21-951
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerDrs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
StatusACTIVE
MaterialCOPPER ALLOY CONTACT
Terminal Type and Quantity1 WIRE LEAD W/LUG BACK
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.193 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
MaterialCOPPER ALLOY CONTACT
Terminal Type and Quantity1 WIRE LEAD W/LUG BACK
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.193 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.1000 lbs
Cube0.0030 cu ft
Verified Substitutes 6
Circuit Card Assembly
5420-00-877-8682 INTERCHANGEABLE
Superstructure,interior Bay
1420-00-894-959221951 INTERCHANGEABLE
Shaft and Piston As
Eaton Aerospace, Llc Dba Jackson South
4730-00-913-17622195-1 INTERCHANGEABLE
CAGE Unit,steam Trap
Velan Valve Corp.
5961-01-123-627921951 INTERCHANGEABLE
Semiconductor Device,diode
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
6150-01-158-7677SM-D-430308 INTERCHANGEABLE
Cable Assembly-Switch,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
21-951 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
BM21-951PC21-951 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
3287499REVBPC6B Naval Ship Systems Command (USA)
Related Parts
5998-01-073-6886SUCCESSOR
CIRCUIT CARD ASSEMBLY
5420-00-877-8682INTERCHANGEABLE
SUPERSTRUCTURE,INTERIOR BAY
1420-00-894-9592INTERCHANGEABLE
SHAFT AND PISTON AS
21951
4730-00-913-1762INTERCHANGEABLE
CAGE UNIT,STEAM TRAP
2195-1
5961-01-123-6279INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
21951
6150-01-158-7677INTERCHANGEABLE
CABLE ASSEMBLY-SWITCH,ELECTRICAL
SM-D-430308

Frequently Asked Questions

What is NSN 5999-00-552-4618?

NSN 5999-00-552-4618 is a Contact,electrical, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-552-4618?

NSN 5999-00-552-4618 has 3 cross-referenced part numbers: 21-951 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), BM21-951PC21-951 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 3287499REVBPC6B (Naval Ship Systems Command).

What NSN replaces 5999-00-552-4618?

There are 6 known substitutes for 5999-00-552-4618: 5998-01-073-6886, 5420-00-877-8682, 1420-00-894-9592 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-951?

Key specifications for 21-951: Material: COPPER ALLOY CONTACT; Terminal Type and Quantity: 1 WIRE LEAD W/LUG BACK; Mounting Facility Quantity: 1; Unthreaded Mounting Hole Diameter: 0.193 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

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