The Thumbscrew, cataloged under National Stock Number 5305-01-644-5608, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Micro Plastics Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-644-5608 |
| Primary Part Number | 090632037T |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Micro Plastics Inc |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | KNURLED NO. 2 |
| Thread Direction | RIGHT-HAND |
| Color | BLACK OR OFF-WHITE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC NYLON OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.359 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 |
|---|---|
| 94323A583 | Mcmaster-Carr Supply Company (USA) |
| 090632037T PRIMARY | Micro Plastics Inc (USA) |
| Reference | Meaning |
|---|---|
| 94323A583 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 5305-01-644-5608 is a Thumbscrew, manufactured by Micro Plastics Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-644-5608 has 2 manufacturer part numbers on file: 94323A583 (Mcmaster-Carr Supply Company), 090632037T (Micro Plastics Inc).
Key specifications for 090632037T: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 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.