PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-510Contact,electrical

Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc · NSN 5999-00-257-5737 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-257-5737 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-257-5737. Primary manufacturer part number: 21-510.
Features
  • Contact,electrical — FSC 5999
  • Material: SILVER CONTACT
  • Precious Material and Weight: 0.100 SILVER GRAINS, TROY
  • Precious Material: SILVER
  • Voltage Rating in Volts: 500.0 AC
  • Terminal Type and Quantity: 1 SCREW AXIALLY AT ONE END
  • Current Rating in Amps: 25.0
  • Material: SILVER CONTACT
Applications
  • Applications requiring Silver Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-257-5737, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-257-5737
Primary Part Number21-510
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerDrs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
StatusCANCELLED
MaterialSILVER CONTACT
Precious Material and Weight0.100 SILVER GRAINS, TROY
Precious MaterialSILVER
Voltage Rating in Volts500.0 AC
Terminal Type and Quantity1 SCREW AXIALLY AT ONE END
Current Rating in Amps25.0
MaterialSILVER CONTACT
Precious Material and Weight0.100 SILVER GRAINS, TROY
Precious MaterialSILVER
Voltage Rating in Volts500.0 AC
Terminal Type and Quantity1 SCREW AXIALLY AT ONE END
Current Rating in Amps25.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 10
4130-00-142-0605 INTERCHANGEABLE
Pin,piston
2040-00-506-097421510-21511REV-B-21510 INTERCHANGEABLE
Line Assy
L3harris Technologies, Inc. Div Space and Airborne Systems
5340-00-600-1972215-10 INTERCHANGEABLE
Strap,webbing
Cmc of Georgia, Inc.
4720-00-762-4332100R1AT-10 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
5841-00-867-698521-510 INTERCHANGEABLE
Panel Assembly
Joint Electronics Type Designation System
1630-01-518-93222-1510 INTERCHANGEABLE
Brake,multiple Disk
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
4130-01-560-7130 INTERCHANGEABLE
Receiver,liquid Refrigerant
2590-01-571-6400A600 INTERCHANGEABLE
Rack,baggage,vehicular
Coleman Company Inc De
6840-01-592-382621510 INTERCHANGEABLE
Disinfectant,utility
Sultan Healthcare Inc
2590-01-657-012121510 INTERCHANGEABLE
Parts Kit,bracket,vehicular Comp
Kolpin Mfg Inc
Cross-Reference Index
Part NumberManufacturer
K856367-36 Rca Corp Distributor and Special Products Div
4280ITEM9 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
K856367-36 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
870-194ITEM19 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
21-510 PRIMARY Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
85692W1ITEM11 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
81162W1ITEM9 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
Related Parts
4130-00-142-0605INTERCHANGEABLE
PIN,PISTON
2040-00-506-0974INTERCHANGEABLE
LINE ASSY
21510-21511REV-B-21510
5340-00-600-1972INTERCHANGEABLE
STRAP,WEBBING
215-10
4720-00-762-4332INTERCHANGEABLE
HOSE,NONMETALLIC
100R1AT-10
5841-00-867-6985INTERCHANGEABLE
PANEL ASSEMBLY
21-510
1630-01-518-9322INTERCHANGEABLE
BRAKE,MULTIPLE DISK
2-1510
4130-01-560-7130INTERCHANGEABLE
RECEIVER,LIQUID REFRIGERANT
2590-01-571-6400INTERCHANGEABLE
RACK,BAGGAGE,VEHICULAR
A600
6840-01-592-3826INTERCHANGEABLE
DISINFECTANT,UTILITY
21510
2590-01-657-0121INTERCHANGEABLE
PARTS KIT,BRACKET,VEHICULAR COMP
21510

Frequently Asked Questions

What is NSN 5999-00-257-5737?

NSN 5999-00-257-5737 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: cancelled.

What are the part numbers for NSN 5999-00-257-5737?

NSN 5999-00-257-5737 has 7 cross-referenced part numbers: K856367-36 (Rca Corp Distributor and Special Products Div), 4280ITEM9 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), K856367-36 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 870-194ITEM19 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 21-510 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc) and 2 more.

What NSN replaces 5999-00-257-5737?

There are 10 known substitutes for 5999-00-257-5737: 4130-00-142-0605, 2040-00-506-0974, 5340-00-600-1972 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-510?

Key specifications for 21-510: Material: SILVER CONTACT; Precious Material and Weight: 0.100 SILVER GRAINS, TROY; Precious Material: SILVER; Voltage Rating in Volts: 500.0 AC. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-257-5737 still in active supply?

NSN 5999-00-257-5737 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com