The Pin,lock, cataloged under National Stock Number 5315-01-331-1702, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Kirby Morgan Dive Systems Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5315-01-331-1702 |
| Primary Part Number | 540-075 |
| Item Name | Pin,lock |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| 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 |
|---|---|
| 592-6318254 | Naval Sea Systems Command (USA) |
| 540-075 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 540-080 | 5/9 Secondary reference Kirby Morgan Dive Systems Inc |
NSN 5315-01-331-1702 is a Pin,lock, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-331-1702 has 2 manufacturer part numbers on file: 592-6318254 (Naval Sea Systems Command), 540-075 (Kirby Morgan Dive Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 4240-01-395-1664. Verify interchangeability with system specifications before substitution.
Key specifications for 540-075: End Item Identification: MK21 MOD1 DIVING HELMET. 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.