The Screw,machine, cataloged under National Stock Number 5305-01-244-1047, 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 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-244-1047 |
| Primary Part Number | HR207-4-7 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM OR CADMIUM AND CHROMATE |
| Fastener Length | 0.847 INCHES MINIMUM AND 0.894 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.399 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP H11 |
| Minimum Tensile Strength | 132000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE SET |
| Countersink Angle | 90.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.350 INCHES MINIMUM AND 0.398 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 |
|---|---|
| SC1825-4-7 | Howmet Global Fastening Systems Inc (USA) |
| HR207-4-7 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HR207-4-7 PRIMARY | Hi-Shear Corporation (USA) |
| PBF1211-4-7F | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 121825-4-7 | 5/2 Secondary reference U.S. Government activity |
| GB510CB4-7 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5305-01-244-1047 is a Screw,machine, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-244-1047 has 4 manufacturer part numbers on file: SC1825-4-7 (Howmet Global Fastening Systems Inc), HR207-4-7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HR207-4-7 (Hi-Shear Corporation), PBF1211-4-7F (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for HR207-4-7: Screw Surface Treatment: CADMIUM OR CADMIUM AND CHROMATE; Fastener Length: 0.847 INCHES MINIMUM AND 0.894 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.399 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN. 15 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.