The Screw,assembled Washer, cataloged under National Stock Number 5305-01-116-0850, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-116-0850 |
| Primary Part Number | 621-0441-000 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Fastener Length | 0.313 INCHES NOMINAL IN |
| Primary Washer Outside Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.313 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.022 INCHES NOMINAL IN |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.322 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 621-0441-000 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5305-01-116-0850 is a Screw,assembled Washer, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-116-0850 has 1 manufacturer part number on file: 621-0441-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 621-0441-000: Fastener Length: 0.313 INCHES NOMINAL IN; Primary Washer Outside Diameter: 0.312 INCHES NOMINAL IN; Thread Length: 0.313 INCHES NOMINAL IN; Criticality Code Justification: FEAT. 16 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.