The Pin,firing, cataloged under National Stock Number 1020-01-506-4172, is classified within Federal Supply Class 1020 (Guns, Over 125mm Through 150mm) of the Weapons group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 9 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1020-01-506-4172 |
| Primary Part Number | 7250344 |
| Item Name | Pin,firing |
| FSC / FSG | 1020 / 10 — Guns, Over 125mm Through 150mm |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Striking End Type | POINTED |
| Firing Pin Type | MULTIPLE SHOULDER |
| Striking End Diameter | 0.734 INCHES MINIMUM AND 0.744 INCHES MAXIMUM IN |
| Material Document and Classification | AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE |
| Casehardening Indicator | CASEHARDENED |
| Surface Treatment | NICKEL |
| Material | STEEL COMP 4140 |
| Metallic Hardness Rating | 45.0 MINIMUM ROCKWELL A AND 50.0 MAXIMUM ROCKWELL A |
| Striking End Radius | 0.062 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
NSN 1020-01-506-4172 is a Pin,firing, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 1020, Guns, Over 125mm Through 150mm. Status: active.
NSN 1020-01-506-4172 has 2 manufacturer part numbers on file: 7250344 (Bae Systems Land & Armaments L.p.), 7250344 (Naval Sea Systems Command).
Key specifications for 7250344: Striking End Type: POINTED; Firing Pin Type: MULTIPLE SHOULDER; Striking End Diameter: 0.734 INCHES MINIMUM AND 0.744 INCHES MAXIMUM IN; Material Document and Classification: AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE. 9 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.