NSN 1240-01-135-5601 · NIIN 011355601 · Part number 328MCK
Tasco Sales Inc · FSC 1240 — Optical Sighting and Ranging Equipment · FSG 12 — Fire Control Equipment · CAGE 6M686
Government record, cited
NSN 1240-01-135-5601 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-135-5601. Manufacturer of record part number: 328MCK.
Also searched as1240-01-135-5601 ·
1240011355601 ·
NIIN 011355601 ·
01-135-5601 ·
FSC 1240 Optical Sighting and Ranging Equipment · CAGE 6M686 · 328MCK · 328 MCK · 328 MCK
FSC: 1240 — Optical Sighting and Ranging Equipment
FSG: 12 — Fire Control Equipment
Primary part number: 328MCK
Manufacturer: Tasco Sales Inc
General Description
The Fold-Down Eyecup, cataloged under National Stock Number 1240-01-135-5601, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Tasco Sales Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1240-01-135-5601
Primary Part Number
328MCK
Item Name
Fold-Down Eyecup
FSC / FSG
1240 / 12 — Optical Sighting and Ranging Equipment
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
328 MCK
C/1Advisory reference — outside the item-of-supply concept
United States Coast Guard Yard
328MCK
3/9Design control — primary reference
Tasco Japan Inc.
No interchangeability data on file.
Other items in FSC 1240 — Optical Sighting and Ranging Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1240-00-000-0160
SIGHT UNIT
1240-00-001-4014
1240-00-001-4014 · Item name not on file
1240-00-001-4015
1240-00-001-4015 · Item name not on file
1240-00-001-4488
FILTER,LIGHT,OPTICAL INSTRUMENT
1240-00-003-1076
1240-00-003-1076 · Item name not on file
1240-00-003-8404
1240-00-003-8404 · Item name not on file
1240-00-003-8405
1240-00-003-8405 · Item name not on file
1240-00-003-8406
MOUNT,TELESCOPE
Frequently Asked Questions
What is NSN 1240-01-135-5601?
NSN 1240-01-135-5601 is a Fold-Down Eyecup, manufactured by Tasco Sales Inc, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
What part numbers are listed for NSN 1240-01-135-5601?
NSN 1240-01-135-5601 has 1 manufacturer part number on file: 328MCK (Tasco Sales Inc).
What are the specifications of 328MCK?
Key specifications for 328MCK: End Item Identification: 1240010915096. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1240-01-135-5601 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.