PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B5100Cover,bottom

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 2520-00-148-4969 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-148-4969 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-148-4969. Primary manufacturer part number: B5100.
Features
  • Cover,bottom — FSC 2520
  • General Characteristics Item Description: 17.188 IN. O/A LG,9.875 IN. W,18 HOLES 0.375 IN. DIA,1.250-11.250 NPT PIPE THD IN
  • 1 verified cross-reference
  • Primary manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cover,bottom, cataloged under National Stock Number 2520-00-148-4969, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 1 verified specification, 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
NSN2520-00-148-4969
Primary Part NumberB5100
Item NameCover,bottom
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
General Characteristics Item Description17.188 IN. O/A LG,9.875 IN. W,18 HOLES 0.375 IN. DIA,1.250-11.250 NPT PIPE THD IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5930-00-139-24122805152000 INTERCHANGEABLE
Switch,thermostatic
Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc
Cross-Reference Index
Part NumberManufacturer
B5100 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
5930-00-139-2412INTERCHANGEABLE
SWITCH,THERMOSTATIC
2805152000

Frequently Asked Questions

What is NSN 2520-00-148-4969?

NSN 2520-00-148-4969 is a Cover,bottom, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-148-4969?

NSN 2520-00-148-4969 has 1 cross-referenced part number: B5100 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 2520-00-148-4969?

There is 1 known substitute for 2520-00-148-4969: 5930-00-139-2412. Verify interchangeability with system specifications before substitution.

What are the specifications of B5100?

Key specifications for B5100: General Characteristics Item Description: 17.188 IN. O/A LG,9.875 IN. W,18 HOLES 0.375 IN. DIA,1.250-11.250 NPT PIPE THD IN. 1 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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