The Connecting Link,rigid, cataloged under National Stock Number 3040-01-581-9674, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-581-9674 |
| Primary Part Number | 21988 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | American Defense Group Llc Dba American Physical Security Group Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21988 PRIMARY | American Defense Group Llc Dba American Physical Security Group Llc (USA) |
| Reference | Meaning |
|---|---|
| 21988 | 3/9 Design control — primary reference American Defense Systems, Inc. Dba Adsi |
NSN 3040-01-581-9674 is a Connecting Link,rigid, manufactured by American Defense Group Llc Dba American Physical Security Group Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-581-9674 has 1 manufacturer part number on file: 21988 (American Defense Group Llc Dba American Physical Security Group Llc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-610-1713. Verify interchangeability with system specifications before substitution.
Key specifications for 21988: Part Name Assigned by Controlling Agency: CONNECTING L; End Item Identification: 2540-01-539-0116;VIBRATORY ROLLER 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.
NSN 3040-01-581-9674 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.