PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-7-25Shaft with Gear

Schulze Mfg., Inc. · NSN 6680-00-399-1950 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-399-1950 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-399-1950. Primary manufacturer part number: S-7-25.
Features
  • Shaft with Gear — FSC 6680
  • 2 verified cross-references
  • Primary manufacturer: Schulze Mfg., Inc.
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Shaft with Gear, cataloged under National Stock Number 6680-00-399-1950, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Schulze Mfg., Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-399-1950
Primary Part NumberS-7-25
Item NameShaft with Gear
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerSchulze Mfg., Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5975-00-885-86391028359-1 INTERCHANGEABLE
Plate,wall,electrical
Raytheon Company Dba Raytheon Co
4820-01-236-6024KMC-NL157-1 INTERCHANGEABLE
Stem,fluid Valve
Krobach Mfg. Corp. Dba Krobach Manufacturing Corp
4820-01-236-6025NL0155-1 INTERCHANGEABLE
Stem,fluid Valve
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
7690-01-510-9037S-725 INTERCHANGEABLE
Label
Uline Inc
Cross-Reference Index
Part NumberManufacturer
S-7-25 Jones Instrument Corp (USA)
S-7-25 PRIMARY Schulze Mfg., Inc. (USA)
Related Parts
5975-00-885-8639INTERCHANGEABLE
PLATE,WALL,ELECTRICAL
1028359-1
4820-01-236-6024INTERCHANGEABLE
STEM,FLUID VALVE
KMC-NL157-1
4820-01-236-6025INTERCHANGEABLE
STEM,FLUID VALVE
NL0155-1
7690-01-510-9037INTERCHANGEABLE
LABEL
S-725

Frequently Asked Questions

What is NSN 6680-00-399-1950?

NSN 6680-00-399-1950 is a Shaft with Gear, manufactured by Schulze Mfg., Inc., classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-399-1950?

NSN 6680-00-399-1950 has 2 cross-referenced part numbers: S-7-25 (Jones Instrument Corp), S-7-25 (Schulze Mfg., Inc.).

What NSN replaces 6680-00-399-1950?

There are 4 known substitutes for 6680-00-399-1950: 5975-00-885-8639, 4820-01-236-6024, 4820-01-236-6025 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-7-25?

Key specifications for S-7-25: End Item Identification: POSEIDON; JONES INSTRUMENT CORP S-7 TACHOMETERS. 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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