The Screw,close Tolerance, cataloged under National Stock Number 5305-01-266-9361, 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 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-266-9361 |
| Primary Part Number | HT4064-3-5 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.583 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PS13143 CL 3 TY 2 CAGEC 85277 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.261 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Grip Diameter | 0.1085 INCHES MINIMUM AND 0.1095 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 8740 OR STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.339 INCHES MINIMUM AND 0.341 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 |
|---|---|
| HT4064-3-5 PRIMARY | Hi-Shear Corporation (USA) |
| HT4064-3-5 PRIMARY | Huck International, Inc (USA) |
| HT4064-3-5 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4064-3-5 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3MA1503-3-5 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HT4064-3-5 | 5/9 Secondary reference U.S. Government activity |
| HT4064-3-5 | 3/2 Design control — primary reference U.S. Government activity |
| HT4064-3-5 | 5/9 Secondary reference U.S. Government activity |
| HT4064-3-5 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5305-01-266-9361 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-266-9361 has 5 manufacturer part numbers on file: HT4064-3-5 (Hi-Shear Corporation), HT4064-3-5 (Huck International, Inc), HT4064-3-5 (Howmet Global Fastening Systems Inc), HT4064-3-5 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3MA1503-3-5 (The Boeing Company Div Defense).
Key specifications for HT4064-3-5: Fastener Length: 0.583 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN; Surface Treatment Document and Classification: PS13143 CL 3 TY 2 CAGEC 85277 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.261 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 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.