PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21AClip,electrical

Mueller Electric Company, Inc. Div Mueller Electric Company · NSN 5999-00-577-2943 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-577-2943 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-577-2943. Primary manufacturer part number: 21A.
Features
  • Clip,electrical — FSC 5999
  • Jaw Opening: 1.250 INCHES NOMINAL IN
  • Terminal Type and Quantity: 1 SCREW END OPPOSITE CONTACT
  • Mounting Method: CLIP
  • Material: STEEL BODY
  • Current Rating in Amps: 50.0
  • Style Designator: BATTERY CLIP
  • Surface Treatment: CADMIUM BODY
Applications
  • Applications requiring Steel Body construction
General Description

The Clip,electrical, cataloged under National Stock Number 5999-00-577-2943, 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 Mueller Electric Company, Inc. Div Mueller Electric Company. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: PG.

Technical Specifications
ParameterValue
NSN5999-00-577-2943
Primary Part Number21A
Item NameClip,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerMueller Electric Company, Inc. Div Mueller Electric Company
StatusCANCELLED
Jaw Opening1.250 INCHES NOMINAL IN
Terminal Type and Quantity1 SCREW END OPPOSITE CONTACT
Mounting MethodCLIP
MaterialSTEEL BODY
Current Rating in Amps50.0
Style DesignatorBATTERY CLIP
Surface TreatmentCADMIUM BODY
Voltage Rating in Volts12.0 DC
Jaw Opening1.250 INCHES NOMINAL IN
Terminal Type and Quantity1 SCREW END OPPOSITE CONTACT
Mounting MethodCLIP
MaterialSTEEL BODY
Current Rating in Amps50.0
Style DesignatorBATTERY CLIP
Surface TreatmentCADMIUM BODY
Voltage Rating in Volts12.0 DC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssuePG
SMR CodeVN
Weight0.2600 lbs
Cube0.0347 cu ft
Verified Substitutes 11
No Item Name Available
5999-00-195-9676TL110 SUCCESSOR
Clip,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5905-00-258-11708023607 INTERCHANGEABLE
Resistor,thermal
Us Army Aviation and Missile Command
5975-00-280-7921UL 514A 4IN. X 2 1/8 IN INTERCHANGEABLE
Plate,wall,electrical
Underwriters Laboratories Inc
6320-00-449-5096S1562 INTERCHANGEABLE
Impeller,pump
The Dewey Electronics Corporation Div Pitometer Log Division
5826-00-519-6967ANARN59V INTERCHANGEABLE
Direction Finder Set
Joint Electronics Type Designation System
6250-00-617-0214 INTERCHANGEABLE
Lampholder
8340-00-951-0991 INTERCHANGEABLE
Segment,tent Frame Arch
3040-01-212-6391 INTERCHANGEABLE
Shaft,shouldered
4730-01-331-908821A INTERCHANGEABLE
Eductor,air
Tyco Valves & Controls Lp Dba Penberthy
Cross-Reference Index
Part NumberManufacturer
21A Mueller Electric Company, Inc. Div Mueller Electric Company (USA)
Related Parts
5999-00-615-1943SUCCESSOR
NO ITEM NAME AVAILABLE
5999-00-195-9676SUCCESSOR
CLIP,ELECTRICAL
TL110
5905-00-258-1170INTERCHANGEABLE
RESISTOR,THERMAL
8023607
5975-00-280-7921INTERCHANGEABLE
PLATE,WALL,ELECTRICAL
UL 514A 4IN. X 2 1/8 IN
6320-00-449-5096INTERCHANGEABLE
IMPELLER,PUMP
S1562
5826-00-519-6967INTERCHANGEABLE
DIRECTION FINDER SET
ANARN59V
6250-00-617-0214INTERCHANGEABLE
LAMPHOLDER
8340-00-951-0991INTERCHANGEABLE
SEGMENT,TENT FRAME ARCH
3040-01-212-6391INTERCHANGEABLE
SHAFT,SHOULDERED
4730-01-331-9088INTERCHANGEABLE
EDUCTOR,AIR
21A
5120-01-519-4730INTERCHANGEABLE
SPATULA
21A

Frequently Asked Questions

What is NSN 5999-00-577-2943?

NSN 5999-00-577-2943 is a Clip,electrical, manufactured by Mueller Electric Company, Inc. Div Mueller Electric Company, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-577-2943?

NSN 5999-00-577-2943 has 1 cross-referenced part number: 21A (Mueller Electric Company, Inc. Div Mueller Electric Company).

What NSN replaces 5999-00-577-2943?

There are 11 known substitutes for 5999-00-577-2943: 5999-00-615-1943, 5999-00-195-9676, 5905-00-258-1170 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21A?

Key specifications for 21A: Overall Length: 4.000 INCHES NOMINAL IN; Overall Width: 0.810 INCHES NOMINAL IN; Jaw Opening: 1.250 INCHES NOMINAL IN; Terminal Type and Quantity: 1 SCREW END OPPOSITE CONTACT. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-577-2943 still in active supply?

NSN 5999-00-577-2943 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.
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