PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1B3Shim Bracket 1b3

Naval Facilities Engineering Command · NSN 2040-01-260-1888 · FSC 2040 · No Item Name Available
Verified by PartsTable
NSN 2040-01-260-1888 — this item is cataloged by the U.S. Government under National Stock Number 2040-01-260-1888. Primary manufacturer part number: 1B3.
Features
  • Shim Bracket 1b3 — FSC 2040
  • General Characteristics Item Description: FB,3INX3/8INX5 1/2IN 1 EA; FB 3 1/8INX1/2INX3 1/2IN 2 EA. FABRICATED IAW NAVFAC DWG 6139001. USED IN SECURINGSPUDWELLS TO PILING FOR ELEVATED CAUSEWAY IN
  • 2 verified cross-references
  • Primary manufacturer: Naval Facilities Engineering Command
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shim Bracket 1b3, cataloged under National Stock Number 2040-01-260-1888, is classified within Federal Supply Class 2040 (No Item Name Available) of the Ship and Marine Equipment group. The primary manufacturer of record is Naval Facilities Engineering Command. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2040-01-260-1888
Primary Part Number1B3
Item NameShim Bracket 1b3
FSC / FSG2040 / 20 — No Item Name Available
ManufacturerNaval Facilities Engineering Command
StatusACTIVE
General Characteristics Item DescriptionFB,3INX3/8INX5 1/2IN 1 EA; FB 3 1/8INX1/2INX3 1/2IN 2 EA. FABRICATED IAW NAVFAC DWG 6139001. USED IN SECURINGSPUDWELLS TO PILING FOR ELEVATED CAUSEWAY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
1240-00-144-54916139001 INTERCHANGEABLE
Terminal,sight Refl
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
5940-00-146-1967613900-1 INTERCHANGEABLE
Terminal Box
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
4730-00-273-3398541614TYPE1 INTERCHANGEABLE
Adapter,straight,pipe to Hose
U S Army Tank Automotive Command Amsta-Im-Mm
5960-00-453-5281 INTERCHANGEABLE
Cap,socket
5985-01-016-6928 INTERCHANGEABLE
Attenuator Assembly
5915-01-026-85691B3 INTERCHANGEABLE
Filter,radio Frequency Interfere
Te Connectivity Corporation Div Corcom
2040-01-259-79741B1 INTERCHANGEABLE
Shim Bracket,1b1
Naval Facilities Engineering Command
2040-01-259-79751B2 INTERCHANGEABLE
Shim Bracket,1b2
Naval Facilities Engineering Command
Cross-Reference Index
Part NumberManufacturer
1B3 PRIMARY Naval Facilities Engineering Command (USA)
6139001 Naval Facilities Engineering Command (USA)
Related Parts
1240-00-144-5491INTERCHANGEABLE
TERMINAL,SIGHT REFL
6139001
5940-00-146-1967INTERCHANGEABLE
TERMINAL BOX
613900-1
4730-00-273-3398INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
541614TYPE1
5960-00-453-5281INTERCHANGEABLE
CAP,SOCKET
5985-01-016-6928INTERCHANGEABLE
ATTENUATOR ASSEMBLY
5915-01-026-8569INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
1B3
2040-01-259-7974INTERCHANGEABLE
SHIM BRACKET,1B1
1B1
2040-01-259-7975INTERCHANGEABLE
SHIM BRACKET,1B2
1B2

Frequently Asked Questions

What is NSN 2040-01-260-1888?

NSN 2040-01-260-1888 is a Shim Bracket 1b3, manufactured by Naval Facilities Engineering Command, classified under FSC 2040 (No Item Name Available). Status: active.

What are the part numbers for NSN 2040-01-260-1888?

NSN 2040-01-260-1888 has 2 cross-referenced part numbers: 1B3 (Naval Facilities Engineering Command), 6139001 (Naval Facilities Engineering Command).

What NSN replaces 2040-01-260-1888?

There are 8 known substitutes for 2040-01-260-1888: 1240-00-144-5491, 5940-00-146-1967, 4730-00-273-3398 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1B3?

Key specifications for 1B3: General Characteristics Item Description: FB,3INX3/8INX5 1/2IN 1 EA; FB 3 1/8INX1/2INX3 1/2IN 2 EA. FABRICATED IAW NAVFAC DWG 6139001. USED IN SECURINGSPUDWELLS TO PILING FOR ELEVATED CAUSEWAY 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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