FSC: 6635 — Physical Properties Testing and Inspection
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Strain Gage, cataloged under National Stock Number 6635-01-651-5779, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Strain Gage
FSC / FSG
6635 — Physical Properties Testing and Inspection (FSG 66)
Technical Specifications
Parameter
Value
NSN
6635-01-651-5779
Item Name
Strain Gage
FSC / FSG
6635 / 66 — Physical Properties Testing and Inspection
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6635-01-651-5780WK-13-125-AC-10C/WPOSSIBLE MATCH
STRAIN GAGE
Possible match (shared part number)Vishay Measurements Group Inc
6635-01-651-5781SK-13-125-VA-10CPOSSIBLE MATCH
STRAIN GAGE
Possible match (shared part number)Vishay Measurements Group Inc
6635-01-651-5794WK-05-125-TR-10C/WPOSSIBLE MATCH
STRAIN GAGE
Possible match (shared part number)Vishay Measurements Group Inc
6635-01-651-5799SK-05-125-VA-10CPOSSIBLE MATCH
STRAIN GAGE
Possible match (shared part number)Vishay Measurements Group Inc
6635-01-651-5814WK-13-125-TB-10C/WPOSSIBLE MATCH
STRAIN GAGE
Possible match (shared part number)Vishay Measurements Group Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
WK-13-125-TR-10C/W
3/2Design control — primary reference
U.S. Government activity
JSFS06C13F125W2
1/2Source control — Government-approved source
U.S. Government activity
WK-13-125-TR-10CW
3/9Design control — primary reference
Measurements Group Inc Micro Measurement Div
JSFS06
D/9Drawing number reference only
U.S. Government activity
Related Parts
6635-01-651-5780POSSIBLE MATCH
STRAIN GAGE
WK-13-125-AC-10C/W
6635-01-651-5781POSSIBLE MATCH
STRAIN GAGE
SK-13-125-VA-10C
6635-01-651-5794POSSIBLE MATCH
STRAIN GAGE
WK-05-125-TR-10C/W
6635-01-651-5799POSSIBLE MATCH
STRAIN GAGE
SK-05-125-VA-10C
6635-01-651-5814POSSIBLE MATCH
STRAIN GAGE
WK-13-125-TB-10C/W
Frequently Asked Questions
What is NSN 6635-01-651-5779?
NSN 6635-01-651-5779 is a Strain Gage, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
What NSN replaces 6635-01-651-5779?
5 possible matches (shared part number, not a government interchangeability claim): 6635-01-651-5780, 6635-01-651-5781, 6635-01-651-5794. Verify interchangeability with system specifications before substitution.
Is NSN 6635-01-651-5779 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.