PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12021-1Contact,electrical

Malco Technologies Llc · NSN 5999-01-020-9543 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-020-9543 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-020-9543. Primary manufacturer part number: 12021-1.
Features
  • Contact,electrical — FSC 5999
  • Terminal Type and Quantity: 1 CRIMP AXIALLY AT ONE END
  • Material: COPPER ALLOY BODY AND CONTACT
  • Cable Entrance Diameter: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
  • Style Designator: SOCKET CRIMP CONTACT
  • Overall Diameter: 0.086 INCHES NOMINAL IN
  • Mounting Method: FORCE FIT
  • Terminal Type and Quantity: 1 CRIMP AXIALLY AT ONE END
Applications
  • Applications requiring Copper Alloy Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-01-020-9543, 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 Malco Technologies Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-020-9543
Primary Part Number12021-1
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerMalco Technologies Llc
StatusACTIVE
Terminal Type and Quantity1 CRIMP AXIALLY AT ONE END
MaterialCOPPER ALLOY BODY AND CONTACT
Cable Entrance Diameter0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
Style DesignatorSOCKET CRIMP CONTACT
Overall Diameter0.086 INCHES NOMINAL IN
Mounting MethodFORCE FIT
Terminal Type and Quantity1 CRIMP AXIALLY AT ONE END
MaterialCOPPER ALLOY BODY AND CONTACT
Cable Entrance Diameter0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
Style DesignatorSOCKET CRIMP CONTACT
Overall Diameter0.086 INCHES NOMINAL IN
Mounting MethodFORCE FIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 7
5306-00-974-11107472 INTERCHANGEABLE
Bolt,machine
Sachs-Boge of America
5905-01-025-2972521202119 INTERCHANGEABLE
Resistor,fixed,film
Telemechanics Inc
5305-01-048-1517120211 INTERCHANGEABLE
Screw
International Business Machines Corp Parts Order Center Dept E - 54
5930-01-086-7214 INTERCHANGEABLE
Switch,toggle
5845-01-479-833912021-1 INTERCHANGEABLE
Baffle,acoustic,sonar
Coda Octopus Engineering, Inc.
8145-01-480-4648120211 INTERCHANGEABLE
Shipping and Storage Container,e
Leidos, Inc.
1670-01-661-392812021-1 INTERCHANGEABLE
Harness,personnel Parachute,seat
Pioneer Aerospace Corp
Cross-Reference Index
Part NumberManufacturer
12021-1 Malco Technologies Llc (USA)
203-0002-019 Malco Technologies Llc (USA)
230-990070-489 Cmc Electronics Inc (CAN)
103-0002-019 Malco Technologies Llc (USA)
103-0003-019 Malco Technologies Llc (USA)
103-0003-019 Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu (USA)
Related Parts
5306-00-974-1110INTERCHANGEABLE
BOLT,MACHINE
7472
5905-01-025-2972INTERCHANGEABLE
RESISTOR,FIXED,FILM
521202119
5305-01-048-1517INTERCHANGEABLE
SCREW
120211
5930-01-086-7214INTERCHANGEABLE
SWITCH,TOGGLE
5845-01-479-8339INTERCHANGEABLE
BAFFLE,ACOUSTIC,SONAR
12021-1
8145-01-480-4648INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,E
120211
1670-01-661-3928INTERCHANGEABLE
HARNESS,PERSONNEL PARACHUTE,SEAT
12021-1

Frequently Asked Questions

What is NSN 5999-01-020-9543?

NSN 5999-01-020-9543 is a Contact,electrical, manufactured by Malco Technologies Llc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-020-9543?

NSN 5999-01-020-9543 has 6 cross-referenced part numbers: 12021-1 (Malco Technologies Llc), 203-0002-019 (Malco Technologies Llc), 230-990070-489 (Cmc Electronics Inc), 103-0002-019 (Malco Technologies Llc), 103-0003-019 (Malco Technologies Llc) and 1 more.

What NSN replaces 5999-01-020-9543?

There are 7 known substitutes for 5999-01-020-9543: 5306-00-974-1110, 5905-01-025-2972, 5305-01-048-1517 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12021-1?

Key specifications for 12021-1: Overall Length: 0.531 INCHES NOMINAL IN; Terminal Type and Quantity: 1 CRIMP AXIALLY AT ONE END; Material: COPPER ALLOY BODY AND CONTACT; Cable Entrance Diameter: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN. 14 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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