The Washer,flat, cataloged under National Stock Number 5310-01-581-6743, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-581-6743 |
| Primary Part Number | 420-ISO-VM |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| 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 |
|---|---|
| 420-ISO-VM PRIMARY | American Defense Group Llc Dba American Physical Security Group Llc (USA) |
| Reference | Meaning |
|---|---|
| 420-ISO-VM | 3/9 Design control — primary reference American Defense Systems, Inc. Dba Adsi |
NSN 5310-01-581-6743 is a Washer,flat, manufactured by American Defense Group Llc Dba American Physical Security Group Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-581-6743 has 1 manufacturer part number on file: 420-ISO-VM (American Defense Group Llc Dba American Physical Security Group Llc).
Key specifications for 420-ISO-VM: Part Name Assigned by Controlling Agency: FRONT ISO WASHER; End Item Identification: 3895-01-558-5645; ARMOR KIT, BACKHOE LOADER. 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 5310-01-581-6743 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.