The Screw Assembly,panel, cataloged under National Stock Number 5305-01-472-5644, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hydac Corp. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-472-5644 |
| Primary Part Number | HR4L P/SB |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hydac Corp |
| Status | ACTIVE |
| Fastener Length | 1.938 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | IAW5633,TYPEII,CLASSFE/ZN 5 ASSN STD 1ST TREATMENT RESPONSE OVERALL |
| Thread Length | 0.500 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE ZINC OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 12431103-04 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| HR4L P/SB PRIMARY | Hydac Corp (USA) |
| 12431103-04 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 12413103 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
| 12413103-04 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5305-01-472-5644 is a Screw Assembly,panel, manufactured by Hydac Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-472-5644 has 3 manufacturer part numbers on file: 12431103-04 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), HR4L P/SB (Hydac Corp), 12431103-04 (Amz Alabama Inc.).
Key specifications for HR4L P/SB: Fastener Length: 1.938 INCHES NOMINAL IN; Surface Treatment Document and Classification: IAW5633,TYPEII,CLASSFE/ZN 5 ASSN STD 1ST TREATMENT RESPONSE OVERALL; Thread Length: 0.500 INCHES MINIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 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.