The Screw,close Tolerance, cataloged under National Stock Number 5305-00-040-9449, 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 18 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-040-9449 |
| Primary Part Number | HT295-5D29 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 2.263 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-19019 MANUFACTURERS STANDARD |
| Grip Length | 1.802 INCHES MINIMUM AND 1.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.186 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.625 INCHES MINIMUM AND 0.635 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 |
|---|---|
| ST3M454-5D29 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT295-5D29 PRIMARY | Hi-Shear Corporation (USA) |
| 11905-5D29 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M454-5D29 | Huck International, Inc (USA) |
| HT295-5D29 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 106830-5D29 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M454-5D29 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 106830-5D29 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M454-5D29 | 5/2 Secondary reference U.S. Government activity |
| HT8140-5D29 | 5/9 Secondary reference U.S. Government activity |
| ST3M454-5D29 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM19019-5D29 | 5/9 Secondary reference U.S. Government activity |
| ST3M454-5D29 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-00-040-9449 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-040-9449 has 7 manufacturer part numbers on file: ST3M454-5D29 (Sps Technologies Ltd, Tj Brooks Division), HT295-5D29 (Hi-Shear Corporation), 11905-5D29 (Reid Products Inc. Dba Reid Products Inc), ST3M454-5D29 (Huck International, Inc), HT295-5D29 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
Key specifications for HT295-5D29: Fastener Length: 2.263 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN; Thread Length: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN; Nominal Thread Diameter: 0.312 INCHES IN. 18 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.