PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1B1Shim Bracket,1b1

Naval Facilities Engineering Command · NSN 2040-01-259-7974 · FSC 2040 · No Item Name Available
Verified by PartsTable
NSN 2040-01-259-7974 — this item is cataloged by the U.S. Government under National Stock Number 2040-01-259-7974. Primary manufacturer part number: 1B1.
Features
  • Shim Bracket,1b1 — FSC 2040
  • General Characteristics Item Description: FB,3INX3/8INX5 1/2IN 1 EA; FB,1 5/8INX1/2INX3 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,1b1, cataloged under National Stock Number 2040-01-259-7974, 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2040-01-259-7974
Primary Part Number1B1
Item NameShim Bracket,1b1
FSC / FSG2040 / 20 — No Item Name Available
ManufacturerNaval Facilities Engineering Command
StatusACTIVE
General Characteristics Item DescriptionFB,3INX3/8INX5 1/2IN 1 EA; FB,1 5/8INX1/2INX3 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 7
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
5915-00-172-16651VB1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Te Connectivity Corporation Div Corcom
5120-00-965-9550510003201N INTERCHANGEABLE
Shovel,hand
National Industries for the Blind
5915-01-110-32743564W17 INTERCHANGEABLE
Filter,radio Frequency Interfere
Ametek Inc Div Aerospace and Defense
2040-01-259-79751B2 INTERCHANGEABLE
Shim Bracket,1b2
Naval Facilities Engineering Command
2040-01-260-18881B3 INTERCHANGEABLE
Shim Bracket 1b3
Naval Facilities Engineering Command
Cross-Reference Index
Part NumberManufacturer
1B1 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
5915-00-172-1665INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
1VB1
5120-00-965-9550INTERCHANGEABLE
SHOVEL,HAND
510003201N
5915-01-110-3274INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
3564W17
2040-01-259-7975INTERCHANGEABLE
SHIM BRACKET,1B2
1B2
2040-01-260-1888INTERCHANGEABLE
SHIM BRACKET 1B3
1B3

Frequently Asked Questions

What is NSN 2040-01-259-7974?

NSN 2040-01-259-7974 is a Shim Bracket,1b1, manufactured by Naval Facilities Engineering Command, classified under FSC 2040 (No Item Name Available). Status: active.

What are the part numbers for NSN 2040-01-259-7974?

NSN 2040-01-259-7974 has 2 cross-referenced part numbers: 1B1 (Naval Facilities Engineering Command), 6139001 (Naval Facilities Engineering Command).

What NSN replaces 2040-01-259-7974?

There are 7 known substitutes for 2040-01-259-7974: 1240-00-144-5491, 5940-00-146-1967, 5915-00-172-1665 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1B1?

Key specifications for 1B1: General Characteristics Item Description: FB,3INX3/8INX5 1/2IN 1 EA; FB,1 5/8INX1/2INX3 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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