The Adjusting Device,belt-Chain Tens, cataloged under National Stock Number 2930-01-587-8753, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is American Defense Group Llc Dba American Physical Security Group Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2930-01-587-8753 |
| Primary Part Number | 3978012 |
| Item Name | Adjusting Device,belt-Chain Tens |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | American Defense Group Llc Dba American Physical Security Group Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3978012 PRIMARY | American Defense Group Llc Dba American Physical Security Group Llc (USA) |
| Reference | Meaning |
|---|---|
| 397821 | 5/9 Secondary reference American Defense Systems, Inc. Dba Adsi |
| 3978012 | 3/9 Design control — primary reference American Defense Systems, Inc. Dba Adsi |
NSN 2930-01-587-8753 is a Adjusting Device,belt-Chain Tens, manufactured by American Defense Group Llc Dba American Physical Security Group Llc, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-01-587-8753 has 1 manufacturer part number on file: 3978012 (American Defense Group Llc Dba American Physical Security Group Llc).
Key specifications for 3978012: Part Name Assigned by Controlling Agency: BELT,TENSION; End Item Identification: 2540-01-559-0155; TRACTOR ARMOR KIT. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.