The Screw,machine, cataloged under National Stock Number 5305-01-654-0621, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Engineered Products Co. Div Engineered Products Company. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-654-0621 |
| Primary Part Number | 1675-881 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Engineered Products Co. Div Engineered Products Company |
| Status | ACTIVE |
| Head Height | 0.083 INCHES NOMINAL IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 81.0 DEGREES NOMINAL |
| Head Diameter | 0.262 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 |
NSN 5305-01-654-0621 is a Screw,machine, manufactured by Engineered Products Co. Div Engineered Products Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-654-0621 has 2 manufacturer part numbers on file: 1675-881 (Engineered Products Co. Div Engineered Products Company), 90434A122 (Mcmaster-Carr Supply Co).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-654-0625. Verify interchangeability with system specifications before substitution.
Key specifications for 1675-881: Head Height: 0.083 INCHES NOMINAL IN; Head Style: FLAT COUNTERSUNK; Thread Direction: RIGHT-HAND; Special Features: OVERALL LENGTH: 0.50IN IN. 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.