The Screw,close Tolerance, cataloged under National Stock Number 5305-01-379-9700, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-379-9700 |
| Primary Part Number | HT271A6-8M |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.160 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Fastener Length | 0.584 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Thread Length | 0.094 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.756 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 |
|---|---|
| HT271A6-8M PRIMARY | Hi-Shear Corporation (USA) |
| ST3M430V6-8ASM | The Boeing Company Div Defense (USA) |
| HT271A6-8M PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
NSN 5305-01-379-9700 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-379-9700 has 3 manufacturer part numbers on file: HT271A6-8M (Hi-Shear Corporation), ST3M430V6-8ASM (The Boeing Company Div Defense), HT271A6-8M (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT271A6-8M: Head Height: 0.160 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN; Fastener Length: 0.584 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN; Thread Length: 0.094 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 16 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.