PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33308Holder,electrical Contact Brush

Ametek Inc Lamb Electric Div · NSN 5977-01-085-2281 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-01-085-2281 — this item is cataloged by the U.S. Government under National Stock Number 5977-01-085-2281. Primary manufacturer part number: 33308.
Features
  • Holder,electrical Contact Brush — FSC 5977
  • Inside Length: 1.750 INCHES NOMINAL IN
  • Inside Width: 0.438 INCHES NOMINAL IN
  • Mounting Facility Quantity: 1
  • Brush Quantity Accommodated Per Holder: 1
  • Mounting Facility: PRESS FIT
  • Overall Thickness: 0.781 INCHES NOMINAL IN
  • Furnished Items and Quantity: 1 BRUSH
Applications
  • Applications requiring Plastic Box Supporting construction
General Description

The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-01-085-2281, 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 Ametek Inc Lamb Electric Div. Government technical data includes 8 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-01-085-2281
Primary Part Number33308
Item NameHolder,electrical Contact Brush
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerAmetek Inc Lamb Electric Div
StatusACTIVE
Inside Length1.750 INCHES NOMINAL IN
Inside Width0.438 INCHES NOMINAL IN
Mounting Facility Quantity1
Brush Quantity Accommodated Per Holder1
Mounting FacilityPRESS FIT
Overall Thickness0.781 INCHES NOMINAL IN
Furnished Items and Quantity1 BRUSH
MaterialPLASTIC BOX SUPPORTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-142-12788926992AND8925644 INTERCHANGEABLE
Adapter,straight,tube to Boss
Rolls-Royce Solutions America Inc
Cross-Reference Index
Part NumberManufacturer
33308 PRIMARY Ametek Inc Lamb Electric Div (USA)
Related Parts
4730-00-142-1278INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
8926992AND8925644

Frequently Asked Questions

What is NSN 5977-01-085-2281?

NSN 5977-01-085-2281 is a Holder,electrical Contact Brush, manufactured by Ametek Inc Lamb Electric Div, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-01-085-2281?

NSN 5977-01-085-2281 has 1 cross-referenced part number: 33308 (Ametek Inc Lamb Electric Div).

What NSN replaces 5977-01-085-2281?

There is 1 known substitute for 5977-01-085-2281: 4730-00-142-1278. Verify interchangeability with system specifications before substitution.

What are the specifications of 33308?

Key specifications for 33308: Inside Length: 1.750 INCHES NOMINAL IN; Inside Width: 0.438 INCHES NOMINAL IN; Mounting Facility Quantity: 1; Brush Quantity Accommodated Per Holder: 1. 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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