The Screw,assembled Washer, cataloged under National Stock Number 5305-01-310-9235, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Itt Cannon Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-310-9235 |
| Primary Part Number | D20418-84 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Itt Cannon Llc |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Secondary Washer Relationship to Primary Washer | IDENTICAL |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2,CL 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.325 INCHES NOMINAL IN |
| Secondary Washer Style | FLAT |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Features Provided | LOCK WASHER AND HEX NUT |
| Head Style | HEXAGON |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.188 INCHES NOMINAL IN |
| Color | YELLOW OVERALL |
| Surface Treatment | CADMIUM AND CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 3 |
| 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 |
|---|---|
| D20418-84 PRIMARY | Itt Cannon Llc (USA) |
| 371-0062-020 | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 371-0062-020 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-310-9235 is a Screw,assembled Washer, manufactured by Itt Cannon Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-310-9235 has 2 manufacturer part numbers on file: D20418-84 (Itt Cannon Llc), 371-0062-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for D20418-84: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Secondary Washer Relationship to Primary Washer: IDENTICAL; Surface Treatment Document and Classification: QQ-P-416 TY 2 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2,CL 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL. 19 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.