The Screw,lag, cataloged under National Stock Number 5305-01-499-2858, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-499-2858 |
| Primary Part Number | AES05L375C50AP5A21 |
| Item Name | Screw,lag |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.375 INCHES IN |
| Fastener Length | 3.500 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Head Style | HEXAGON |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| AES05L375C50AP5A21 PRIMARY | The American Society of Mechanical Engineers (USA) |
| 91478A638 | Mcmaster-Carr Supply Co (USA) |
| 22267 | Fastenal Company Dba Fastenal Co Div Ilmon (USA) |
NSN 5305-01-499-2858 is a Screw,lag, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-499-2858 has 3 manufacturer part numbers on file: AES05L375C50AP5A21 (The American Society of Mechanical Engineers), 91478A638 (Mcmaster-Carr Supply Co), 22267 (Fastenal Company Dba Fastenal Co Div Ilmon).
Key specifications for AES05L375C50AP5A21: Nonmachine Nominal Thread Diameter: 0.375 INCHES IN; Fastener Length: 3.500 INCHES NOMINAL IN; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA); Head Style: HEXAGON. 6 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.