The Retainer,nut and Bolt, cataloged under National Stock Number 5340-01-651-5873, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-651-5873 |
| Primary Part Number | NAS578C5B |
| Item Name | Retainer,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| NAS578C5B PRIMARY | Monadnock Company, the Dba Lisi Aerospace (USA) |
| NAS578C5B PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| NAS578 | 3/1 Design control — primary reference U.S. Government activity |
| NAS578C5B | 3/2 Design control — primary reference U.S. Government activity |
| NAS578C5B | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-651-5873 is a Retainer,nut and Bolt, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-651-5873 has 2 manufacturer part numbers on file: NAS578C5B (Monadnock Company, the Dba Lisi Aerospace), NAS578C5B (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for NAS578C5B: Overall Height: 0.329 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN; Overall Length: 0.706 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN; Overall Width: 1.578 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: RETAINER,FLOATING BARREL NUT. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.