The Screw,machine, cataloged under National Stock Number 5305-01-436-5311, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems (operations) Ltd. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-436-5311 |
| Primary Part Number | NAS8103B-8 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bae Systems (operations) Ltd |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Fastener Length | 0.500 INCHES MAXIMUM IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.373 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 |
|---|---|
| NAS8103B-8 | Bae Systems (operations) Ltd (GBR) |
| Reference | Meaning |
|---|---|
| NAS8103B-8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-436-5311 is a Screw,machine, manufactured by Bae Systems (operations) Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-436-5311 has 1 manufacturer part number on file: NAS8103B-8 (Bae Systems (operations) Ltd).
Key specifications for NAS8103B-8: Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES MAXIMUM IN; Thread Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN. 12 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.