General Characteristics Item Description: ALUMINUM ALLOY,4.53 IN LG,1 HOLE .139 IN DIA,0.375 IN WD IN
Identification
NSN: 1040-00-439-7985
NIIN: 004397985
FSC: 1040 — Chemical Weapons and Equipment
FSG: 10 — Weapons
General Description
The Trigger,release, cataloged under National Stock Number 1040-00-439-7985, is classified within Federal Supply Class 1040 (Chemical Weapons and Equipment) of the Weapons group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1040-00-439-7985
Item Name
Trigger,release
FSC / FSG
1040 / 10 — Chemical Weapons and Equipment
Status
ACTIVE
General Characteristics Item Description
ALUMINUM ALLOY,4.53 IN LG,1 HOLE .139 IN DIA,0.375 IN WD IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
D116-4-24
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 1040 — Chemical Weapons and Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1040-00-000-0138
DISCHARGER,GRENADE,SMOKE,COUNTER
1040-00-006-3163
PLATE,INLET VALVE
1040-00-010-0156
1040-00-010-0156 · Item name not on file
1040-00-010-9526
1040-00-010-9526 · Item name not on file
1040-00-012-8285
1040-00-012-8285 · Item name not on file
1040-00-012-8287
1040-00-012-8287 · Item name not on file
1040-00-012-8288
1040-00-012-8288 · Item name not on file
1040-00-012-8289
1040-00-012-8289 · Item name not on file
Frequently Asked Questions
What is NSN 1040-00-439-7985?
NSN 1040-00-439-7985 is a Trigger,release, classified under FSC 1040, Chemical Weapons and Equipment. Status: active.
What are the specifications of 1040-00-439-7985?
Key specifications for 1040-00-439-7985: General Characteristics Item Description: ALUMINUM ALLOY,4.53 IN LG,1 HOLE .139 IN DIA,0.375 IN WD IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 1040-00-439-7985 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.
What is the DEMIL code for NSN 1040-00-439-7985?
NSN 1040-00-439-7985 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.