The Screw Assembly,panel, cataloged under National Stock Number 5305-01-509-5477, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Gkn Fokker Aerospace B.v.. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-509-5477 |
| Primary Part Number | FON20-7517-1 |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Gkn Fokker Aerospace B.v. |
| Status | ACTIVE |
| Fastener Length | 20.9 MILLIMETERS MINIMUM AND 21.4 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS5678 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| Material Document and Classification | AMS5853 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Material Document and Classification | ASTM A240 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE STAND-OFF |
| Features Provided | FLAT WASHER AND RETAINING CLIP |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Material | IRON ALLOY 660 FASTENER |
| Material | STEEL COMP 631 SPRING |
| Material | STEEL COMP 304 OR STEEL COMP 316 STAND-OFF |
| Head Diameter | 8.7 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| FON20-7517-1 | Gkn Fokker Aerospace B.v. (NLD) |
| Reference | Meaning |
|---|---|
| 10150717 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| AVL398AC4-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-509-5477 is a Screw Assembly,panel, manufactured by Gkn Fokker Aerospace B.v., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-509-5477 has 1 manufacturer part number on file: FON20-7517-1 (Gkn Fokker Aerospace B.v.).
Key specifications for FON20-7517-1: Fastener Length: 20.9 MILLIMETERS MINIMUM AND 21.4 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS5678 ASSN STD SINGLE MATERIAL RESPONSE SPRING; Material Document and Classification: AMS5853 ASSN STD SINGLE MATERIAL RESPONSE FASTENER. 13 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.