The Screw,close Tolerance, cataloged under National Stock Number 5305-01-191-2469, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-191-2469 |
| Primary Part Number | HR204-6-20 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 1.794 INCHES MINIMUM AND 1.841 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837,TY2,CL2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.534 INCHES MINIMUM AND 0.601 INCHES MAXIMUM IN |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.717 INCHES MINIMUM AND 0.760 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 |
|---|---|
| HR204-6-20 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| SC1779-6-20 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| PBF1202-6-20 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HR204-6-20 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| GB510CE6-20 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| 106706T-6-20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-191-2469 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-191-2469 has 4 manufacturer part numbers on file: HR204-6-20 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), SC1779-6-20 (Howmet Global Fastening Systems Inc), PBF1202-6-20 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HR204-6-20 (Hi-Shear Corporation).
Key specifications for HR204-6-20: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 1.794 INCHES MINIMUM AND 1.841 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837,TY2,CL2 MIL SPEC 2ND 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.