The Screw,machine, cataloged under National Stock Number 5305-01-004-4983, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-004-4983 |
| Primary Part Number | AA55623-271 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Fastener Length | 1.063 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Screw Material Document and Classification | MIL-M-20693 COMP A TY 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.853 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1 TYPE AND 3S STYLE |
| Screw Material | PLASTIC POLYHEXAMETHYLENE AMIDE |
| Internal Drive Style | SLOT |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.442 INCHES MINIMUM AND 0.507 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 |
|---|---|
| AA55623-271 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| MS18211-130C | 5/9 Secondary reference U.S. Government activity |
| FF-S-92 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-004-4983 is a Screw,machine, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-004-4983 has 1 manufacturer part number on file: AA55623-271 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
Key specifications for AA55623-271: Fastener Length: 1.063 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Screw Material Document and Classification: MIL-M-20693 COMP A TY 1 MIL SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.853 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 14 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.