PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

60521SHolder,electrical Contact Brush

Reliance Electric Company Dba Reliance & Dodge Brands · NSN 5977-00-364-7347 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-364-7347 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-364-7347. Primary manufacturer part number: 60521S.
Features
  • Holder,electrical Contact Brush — FSC 5977
  • Mounting Facility Quantity: 1
  • Terminal Quantity: 1
  • Inside Length: 1.875 INCHES NOMINAL IN
  • Terminal Type: SCREW
  • Brush Spring Adjustability: ADJUSTABLE
  • Brush Pressure Spring Type Accommodated: HELICAL TORSION
  • Inside Width: 1.906 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Box construction
General Description

The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-00-364-7347, is classified within Federal Supply Class 5977 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Reliance Electric Company Dba Reliance & Dodge Brands. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-00-364-7347
Primary Part Number60521S
Item NameHolder,electrical Contact Brush
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerReliance Electric Company Dba Reliance & Dodge Brands
StatusACTIVE
Mounting Facility Quantity1
Terminal Quantity1
Inside Length1.875 INCHES NOMINAL IN
Terminal TypeSCREW
Brush Spring AdjustabilityADJUSTABLE
Brush Pressure Spring Type AccommodatedHELICAL TORSION
Inside Width1.906 INCHES NOMINAL IN
Inside Thickness0.641 INCHES NOMINAL IN
Brush Quantity Accommodated Per Holder1
Mounting FacilityUNTHREADED HOLES
Overall Thickness5.938 INCHES NOMINAL IN
Style DesignatorRECTANGLE BEVELED
MaterialCOPPER ALLOY BOX
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5120-01-021-7473 INTERCHANGEABLE
Pliers
Cross-Reference Index
Part NumberManufacturer
60521S PRIMARY Reliance Electric Company Dba Reliance & Dodge Brands (USA)
60521S Reliance Electric (USA)
Related Parts
5120-01-021-7473INTERCHANGEABLE
PLIERS

Frequently Asked Questions

What is NSN 5977-00-364-7347?

NSN 5977-00-364-7347 is a Holder,electrical Contact Brush, manufactured by Reliance Electric Company Dba Reliance & Dodge Brands, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-364-7347?

NSN 5977-00-364-7347 has 2 cross-referenced part numbers: 60521S (Reliance Electric Company Dba Reliance & Dodge Brands), 60521S (Reliance Electric).

What NSN replaces 5977-00-364-7347?

There is 1 known substitute for 5977-00-364-7347: 5120-01-021-7473. Verify interchangeability with system specifications before substitution.

What are the specifications of 60521S?

Key specifications for 60521S: Mounting Facility Quantity: 1; Terminal Quantity: 1; Inside Length: 1.875 INCHES NOMINAL IN; Overall Width: 1.906 INCHES NOMINAL IN. 15 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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