The Screw,machine, cataloged under National Stock Number 5305-00-452-4875, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bsi Standards Limited. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-452-4875 |
| Primary Part Number | A32A20 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bsi Standards Limited |
| Status | ACTIVE |
| Head Height | 0.073 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Thread Pitch in Millimeters | 0.53 |
| Thread Length | 0.573 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 2.8 MILLIMETERS MM |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Series Designator | BA |
| Head Diameter | 0.184 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | DTD904,FSCM K7766 NATIONAL SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| A32A20 PRIMARY | Bsi Standards Limited (GBR) |
| Reference | Meaning |
|---|---|
| 99-1011484 | 6/9 Informative reference only U.S. Government activity |
NSN 5305-00-452-4875 is a Screw,machine, manufactured by Bsi Standards Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-452-4875 has 1 manufacturer part number on file: A32A20 (Bsi Standards Limited).
Key specifications for A32A20: Head Height: 0.073 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM; Fastener Length: 0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Thread Pitch in Millimeters: 0.53. 13 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.