The Thumbscrew, cataloged under National Stock Number 5305-00-119-4584, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-119-4584 |
| Primary Part Number | HP558107 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Head Height | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Fastener Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Length | 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.495 INCHES MINIMUM AND 0.505 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 |
|---|---|
| HP558107 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP558107 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-119-4584 is a Thumbscrew, manufactured by Tactair Fluid Controls Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-119-4584 has 1 manufacturer part number on file: HP558107 (Tactair Fluid Controls Inc).
Key specifications for HP558107: Head Height: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Fastener Length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Thread Length: 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL. 15 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.