PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

72341Shaft,upper Trunnion

Arma Div Ambac Industries Inc · NSN 3040-00-031-2504 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-031-2504 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-031-2504. Primary manufacturer part number: 72341.
Features
  • Shaft,upper Trunnion — FSC 3040
  • General Characteristics Item Description: O/A LG 2.500 IN.,O/A DIA 1.375 IN.,THD SECTION 0.688 IN. LG,1/2 IN.-20-NF3 THD IN
  • 2 verified cross-references
  • Primary manufacturer: Arma Div Ambac Industries Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shaft,upper Trunnion, cataloged under National Stock Number 3040-00-031-2504, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Arma Div Ambac Industries Inc. Government technical data includes 1 verified specification, 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
NSN3040-00-031-2504
Primary Part Number72341
Item NameShaft,upper Trunnion
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerArma Div Ambac Industries Inc
StatusACTIVE
General Characteristics Item DescriptionO/A LG 2.500 IN.,O/A DIA 1.375 IN.,THD SECTION 0.688 IN. LG,1/2 IN.-20-NF3 THD IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2805-00-033-5130 INTERCHANGEABLE
Ring Set,piston
Cross-Reference Index
Part NumberManufacturer
72341 Arma Div Ambac Industries Inc
A72341 Ballantyne of Omaha Inc. (USA)
Related Parts
2805-00-033-5130INTERCHANGEABLE
RING SET,PISTON

Frequently Asked Questions

What is NSN 3040-00-031-2504?

NSN 3040-00-031-2504 is a Shaft,upper Trunnion, manufactured by Arma Div Ambac Industries Inc, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-031-2504?

NSN 3040-00-031-2504 has 2 cross-referenced part numbers: 72341 (Arma Div Ambac Industries Inc), A72341 (Ballantyne of Omaha Inc.).

What NSN replaces 3040-00-031-2504?

There is 1 known substitute for 3040-00-031-2504: 2805-00-033-5130. Verify interchangeability with system specifications before substitution.

What are the specifications of 72341?

Key specifications for 72341: General Characteristics Item Description: O/A LG 2.500 IN.,O/A DIA 1.375 IN.,THD SECTION 0.688 IN. LG,1/2 IN.-20-NF3 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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