The Screw Assembly,panel, cataloged under National Stock Number 5305-01-352-2191, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Technology Corp. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-352-2191 |
| Primary Part Number | FT1255HS-4-3-9 |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Technology Corp |
| Status | ACTIVE |
| Width Across Flats | 0.094 INCHES NOMINAL IN |
| Head Height | 0.169 INCHES MAXIMUM IN |
| Fastener Length | 0.542 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Surface Treatment Document and Classification | MIL-A-8625 TY1 CL2 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| Material Accommodated Thickness | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ANODIZE STAND-OFF |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | ALUMINUM ALLOY 7075 STAND-OFF |
| Material | STEEL COMP 303 PLUS X OR STEEL COMP 303 OR STEEL COMP 303SE FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.160 INCHES MINIMUM AND 0.200 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 |
|---|---|
| FT1255HS-4-3-9 PRIMARY | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| 334057P01 | 5/9 Secondary reference Howden Fluid Systems |
| 334057P01 | 5/9 Secondary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
| FT-1255-HS-4-3-P | 5/9 Secondary reference Fastener Technology Corp |
NSN 5305-01-352-2191 is a Screw Assembly,panel, manufactured by Fastener Technology Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-352-2191 has 1 manufacturer part number on file: FT1255HS-4-3-9 (Fastener Technology Corp).
Key specifications for FT1255HS-4-3-9: Width Across Flats: 0.094 INCHES NOMINAL IN; Head Height: 0.169 INCHES MAXIMUM IN; Fastener Length: 0.542 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER. 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.