The Screw Assembly,panel, cataloged under National Stock Number 5305-01-474-2755, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-474-2755 |
| Primary Part Number | HS5993-01-0500 |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Lead Thread Quantity | TWO |
| Head Height | 0.200 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Fastener Length | 0.950 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Accommodated Thickness | 0.108 INCHES NOMINAL IN |
| Thread Length | 0.430 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| Material Document and Classification | ASS 5640 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A555 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE STAND-OFF |
| Material Document and Classification | AST-5731 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM 5732 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | UNDERCUT PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Material | STEEL COMP 302 SPRING |
| Material | STEEL CORROSION RESISTING STAND-OFF |
| Material | IRON ALLOY 660 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.482 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 | X |
| Part Number | Manufacturer |
|---|---|
| CA22043-10-500 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| HS5993-01-0500 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| HS5993-01-0500 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
NSN 5305-01-474-2755 is a Screw Assembly,panel, manufactured by The Boeing Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-474-2755 has 2 manufacturer part numbers on file: CA22043-10-500 (Howmet Global Fastening Systems Inc. Div Tridair Products), HS5993-01-0500 (The Boeing Company).
Key specifications for HS5993-01-0500: Lead Thread Quantity: TWO; Head Height: 0.200 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Fastener Length: 0.950 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.