The Lock Spring,turnlock Fastener, cataloged under National Stock Number 5325-01-445-8149, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-445-8149 |
| Primary Part Number | 841197-0001 |
| Item Name | Lock Spring,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Center to Center Distance Between Eyes | 0.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eye Diameter | 0.095 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5644 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Stock Diameter | 0.050 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 630 OVERALL |
| Lockspring Style | LOCKSPRING |
| 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 |
|---|---|
| 841197-0001 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| PB35PS | 3/9 Design control — primary reference Southco Inc |
| 841197-0001 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
NSN 5325-01-445-8149 is a Lock Spring,turnlock Fastener, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-445-8149 has 1 manufacturer part number on file: 841197-0001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 841197-0001: Center to Center Distance Between Eyes: 0.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eye Diameter: 0.095 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Material Document and Classification: AMS 5644 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 8 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.