The Screw,machine, cataloged under National Stock Number 5305-01-438-2364, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hardware Specialty Co Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-438-2364 |
| Primary Part Number | A3137817-1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hardware Specialty Co Inc |
| Status | ACTIVE |
| Head Height | 0.700 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN |
| Fastener Length | 0.188 INCHES NOMINAL IN |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.1120 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.2050 INCHES MINIMUM AND 0.2190 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 |
|---|---|
| A3137817-1 | Hardware Specialty Co Inc (USA) |
| Reference | Meaning |
|---|---|
| A3137817-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-438-2364 is a Screw,machine, manufactured by Hardware Specialty Co Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-438-2364 has 1 manufacturer part number on file: A3137817-1 (Hardware Specialty Co Inc).
Key specifications for A3137817-1: Head Height: 0.700 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN; Fastener Length: 0.188 INCHES NOMINAL IN; Thread Length: 0.188 INCHES NOMINAL IN; Nominal Thread Diameter: 0.1120 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.