PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300931Coupling,shaft,rigid

Tri-Tec Manufacturing Llc · NSN 3010-01-521-6636 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-01-521-6636 — this item is cataloged by the U.S. Government under National Stock Number 3010-01-521-6636. Primary manufacturer part number: 300931.
Features
  • Coupling,shaft,rigid — FSC 3010
  • 4 verified cross-references
  • Primary manufacturer: Tri-Tec Manufacturing Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-521-6636, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Tri-Tec Manufacturing Llc. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-01-521-6636
Primary Part Number300931
Item NameCoupling,shaft,rigid
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerTri-Tec Manufacturing Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5935-00-929-57703188 INTERCHANGEABLE
Connector,plug,electrical
Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector
5962-01-391-7514300931 INTERCHANGEABLE
Microcircuit,memory
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
300931 Tri-Tec Manufacturing, Llc (USA)
SE121N FN-40 SHT 3 Tri-Tec Manufacturing, Llc (USA)
SE121N FN-40 SHT 3 Tri-Tec Manufacturing Llc (USA)
300931 PRIMARY Tri-Tec Manufacturing Llc (USA)
Related Parts
5935-00-929-5770INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3188
5962-01-391-7514INTERCHANGEABLE
MICROCIRCUIT,MEMORY
300931

Frequently Asked Questions

What is NSN 3010-01-521-6636?

NSN 3010-01-521-6636 is a Coupling,shaft,rigid, manufactured by Tri-Tec Manufacturing Llc, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-01-521-6636?

NSN 3010-01-521-6636 has 4 cross-referenced part numbers: 300931 (Tri-Tec Manufacturing, Llc), SE121N FN-40 SHT 3 (Tri-Tec Manufacturing, Llc), SE121N FN-40 SHT 3 (Tri-Tec Manufacturing Llc), 300931 (Tri-Tec Manufacturing Llc).

What NSN replaces 3010-01-521-6636?

There are 2 known substitutes for 3010-01-521-6636: 5935-00-929-5770, 5962-01-391-7514. Verify interchangeability with system specifications before substitution.

What are the specifications of 300931?

Key specifications for 300931: Special Features: COUPLING MIR MAIN SHAFT, AISI 4140 CDS; End Item Identification: ASSY, HOUSING MAIN. 2 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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