The Screw,machine, cataloged under National Stock Number 5305-01-226-0795, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Uk Ltd. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-226-0795 |
| Primary Part Number | 089K-5436-20 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Leonardo Uk Ltd |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Screw Material Document and Classification | IFI-104 ASSN STD ALL MATERIAL RESPONSES |
| Thread Length | 1.183 INCHES NOMINAL IN |
| Supplementary Features | ARINC-KING PT LIST 006-8024-05,SIMILAR TO NSN 5305-00-763-6956 |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 22373-089-5436 MANUFACTURERS SPECIFICATION CONTROL AND 80204-ANSI B18.6.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Departure From Cited Document | AS MODIFIED BY MATERIAL |
| Nondefinitive Spec/std Data | 1 TABLE AND 4-40 SIZE AND 1-1/4IN. LENGTH AND STLS/STL MATERIAL IN |
| Screw Material | STEEL COMP 301 OR STEEL COMP 430 |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.207 INCHES MINIMUM AND 0.225 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 |
|---|---|
| 089K-5436-20 | Leonardo Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 4-40UNC2A1-1/4LGANSIB18.6.3FLATH | 3/1 Design control — primary reference U.S. Government activity |
| 089-5436-20 | 7/2 Vendor item drawing reference Honeywell International Inc. Dba Honeywell Aerospace Div Aerospace-Olathe |
NSN 5305-01-226-0795 is a Screw,machine, manufactured by Leonardo Uk Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-226-0795 has 1 manufacturer part number on file: 089K-5436-20 (Leonardo Uk Ltd).
Key specifications for 089K-5436-20: Screw Surface Treatment: PASSIVATE; Fastener Length: 1.250 INCHES NOMINAL IN; Screw Material Document and Classification: IFI-104 ASSN STD ALL MATERIAL RESPONSES; Thread Length: 1.183 INCHES NOMINAL IN. 18 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.