The Screw,machine, cataloged under National Stock Number 5305-01-305-5570, 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 22 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-305-5570 |
| Primary Part Number | HR217-3-8H |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Head Height | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Bearing Surface of Head Surface Finish | 32.0 MICROINCHES |
| Screw Surface Treatment | CADMIUM AND CHROMATE |
| Fastener Length | 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN |
| Thread Length | 0.363 INCHES MINIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Shank Surface Finish | 32.0 MICROINCHES |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Thread Surface Finish | 32.0 MICROINCHES |
| Screw Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE SET |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Hole Configuration Style | ROUND |
| Hole Diameter | 0.032 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Head Diameter | 0.360 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| SC2174-3A8 | Howmet Global Fastening Systems Inc (USA) |
| HR217-3-8H PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GB511DU3-8H | Northrop Grumman Systems Corporation (USA) |
| PBF1355A3H-8 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HR217-3-8H PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| MATP111A43-8 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 122966AH3-8 | 5/2 Secondary reference U.S. Government activity |
| AM2800A3-H8 | 5/9 Secondary reference Aero Mechanical Fastening Systems Inc |
NSN 5305-01-305-5570 is a Screw,machine, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-305-5570 has 5 manufacturer part numbers on file: SC2174-3A8 (Howmet Global Fastening Systems Inc), HR217-3-8H (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), GB511DU3-8H (Northrop Grumman Systems Corporation), PBF1355A3H-8 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HR217-3-8H (Hi-Shear Corporation).
Key specifications for HR217-3-8H: Head Height: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Bearing Surface of Head Surface Finish: 32.0 MICROINCHES; Screw Surface Treatment: CADMIUM AND CHROMATE; Fastener Length: 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN. 22 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.