NSN 4240-01-657-5306 · NIIN 016575306 · Part number MS12S-MBLK-KIT
Alphamicron, Incorporated · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 08YL7
Government record, cited
NSN 4240-01-657-5306 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-657-5306. Manufacturer of record part number: MS12S-MBLK-KIT.
Also searched as4240-01-657-5306 ·
4240016575306 ·
NIIN 016575306 ·
01-657-5306 ·
FSC 4240 Safety and Rescue Equipment · CAGE 08YL7 · MS12S-MBLK-KIT
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: MS12S-MBLK-KIT
Manufacturer: Alphamicron, Incorporated
General Description
The Spectacles,industrial, cataloged under National Stock Number 4240-01-657-5306, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Alphamicron, Incorporated. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4240-01-657-5306
Primary Part Number
MS12S-MBLK-KIT
Item Name
Spectacles,industrial
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
Alphamicron, Incorporated
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515
4240-00-001-1515 · Item name not on file
4240-00-001-2684
4240-00-001-2684 · Item name not on file
4240-00-006-0022
HOSE,EVACUATION
4240-00-007-4576
4240-00-007-4576 · Item name not on file
4240-00-007-8182
4240-00-007-8182 · Item name not on file
4240-00-007-8183
4240-00-007-8183 · Item name not on file
4240-00-007-8184
4240-00-007-8184 · Item name not on file
4240-00-007-8185
4240-00-007-8185 · Item name not on file
Frequently Asked Questions
What is NSN 4240-01-657-5306?
NSN 4240-01-657-5306 is a Spectacles,industrial, manufactured by Alphamicron, Incorporated, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-657-5306?
NSN 4240-01-657-5306 has 1 manufacturer part number on file: MS12S-MBLK-KIT (Alphamicron, Incorporated).
What are the specifications of MS12S-MBLK-KIT?
Key specifications for MS12S-MBLK-KIT: Special Features: SIZE SMALL; End Item Identification: INTEGRATED HEAD PROTECTION SYSTEM. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-657-5306 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.