The Thumbscrew, cataloged under National Stock Number 5305-01-082-8239, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-082-8239 |
| Primary Part Number | GS550AG11C |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Fastener Length | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN |
| Thread Length | 1.770 INCHES MINIMUM AND 1.990 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| 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 |
|---|---|
| GS550AG11C | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| CL-23620 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-082-8239 is a Thumbscrew, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-082-8239 has 1 manufacturer part number on file: GS550AG11C (Northrop Grumman Systems Corporation).
Key specifications for GS550AG11C: Head Height: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Fastener Length: 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN; Thread Length: 1.770 INCHES MINIMUM AND 1.990 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN. 13 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.