PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

031B265-11Coupling,shaft,flexible

Peerless Instrument Co., Inc. · NSN 3010-00-340-1978 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-00-340-1978 — this item is cataloged by the U.S. Government under National Stock Number 3010-00-340-1978. Primary manufacturer part number: 031B265-11.
Features
  • Coupling,shaft,flexible — FSC 3010
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • Criticality Code Justification: ZZZY
  • 3 verified cross-references
  • Primary manufacturer: Peerless Instrument Co., Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-340-1978, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Peerless Instrument Co., Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-00-340-1978
Primary Part Number031B265-11
Item NameCoupling,shaft,flexible
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerPeerless Instrument Co., Inc.
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4940-00-718-711145721 INTERCHANGEABLE
Coupling Assy,steam
Aeroil Products Co Inc
5365-01-357-8301SK56Y21-92-1 SIZE A-050 INTERCHANGEABLE
Spacer,plate
Naval Sea Systems Command
2530-01-728-0954A050 INTERCHANGEABLE
Tank,pressure
Luxfer Inc. Dba Luxfer Gas Cylinders Div Headquarters-Corporate
Cross-Reference Index
Part NumberManufacturer
031B265-11 Peerless Instrument Co., Inc. (USA)
A050 Lovejoy, Llc Div Lovejoy (USA)
1070H050 PC 21 Peerless Instrument Co., Inc. (USA)
Related Parts
4940-00-718-7111INTERCHANGEABLE
COUPLING ASSY,STEAM
45721
5365-01-357-8301INTERCHANGEABLE
SPACER,PLATE
SK56Y21-92-1 SIZE A-050
2530-01-728-0954INTERCHANGEABLE
TANK,PRESSURE
A050

Frequently Asked Questions

What is NSN 3010-00-340-1978?

NSN 3010-00-340-1978 is a Coupling,shaft,flexible, manufactured by Peerless Instrument Co., Inc., classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-00-340-1978?

NSN 3010-00-340-1978 has 3 cross-referenced part numbers: 031B265-11 (Peerless Instrument Co., Inc.), A050 (Lovejoy, Llc Div Lovejoy), 1070H050 PC 21 (Peerless Instrument Co., Inc.).

What NSN replaces 3010-00-340-1978?

There are 3 known substitutes for 3010-00-340-1978: 4940-00-718-7111, 5365-01-357-8301, 2530-01-728-0954. Verify interchangeability with system specifications before substitution.

What are the specifications of 031B265-11?

Key specifications for 031B265-11: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.; Criticality Code Justification: ZZZY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com