The Thumbscrew, cataloged under National Stock Number 5305-01-133-0164, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Brunson Instrument Company Dba Brunson Instrument Company. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-133-0164 |
| Primary Part Number | SP-6-2080 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Brunson Instrument Company Dba Brunson Instrument Company |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Thread Length | 1.125 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.625 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 | X |
| Part Number | Manufacturer |
|---|---|
| SP-6-2080 PRIMARY | Brunson Instrument Company Dba Brunson Instrument Company (USA) |
| Reference | Meaning |
|---|---|
| SP-6-20804 | 5/9 Secondary reference Keuffel and Esser Co |
| SP-6-2080A | 5/9 Secondary reference Brunson Instrument Company Dba Brunson Instrument Company |
NSN 5305-01-133-0164 is a Thumbscrew, manufactured by Brunson Instrument Company Dba Brunson Instrument Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-133-0164 has 1 manufacturer part number on file: SP-6-2080 (Brunson Instrument Company Dba Brunson Instrument Company).
Key specifications for SP-6-2080: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 2.000 INCHES NOMINAL IN; Thread Length: 1.125 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN. 12 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.