The Screw,close Tolerance, cataloged under National Stock Number 5305-01-345-8395, 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 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-345-8395 |
| Primary Part Number | HT4075V4-7-24 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.892 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN |
| Thread Length | 0.398 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM THREADS IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS-4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.781 INCHES NOMINAL THREADS IN |
| Head Diameter | 0.497 INCHES MINIMUM AND 0.507 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 |
|---|---|
| HT4075V4-7-24 PRIMARY | Hi-Shear Corporation (USA) |
| 11839V4-7-24 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4075V4-7-24 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4075V4-7-24 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4075V4-7-24 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4075V4-7-24 | 5/9 Secondary reference U.S. Government activity |
| 3M1034V4-7-24 | 5/2 Secondary reference U.S. Government activity |
| 3M1034V4-7-24 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-345-8395 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-345-8395 has 5 manufacturer part numbers on file: HT4075V4-7-24 (Hi-Shear Corporation), 11839V4-7-24 (Reid Products Inc. Dba Reid Products Inc), HT4075V4-7-24 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4075V4-7-24 (Sps Technologies, Llc Dba PB Fasteners), HT4075V4-7-24 (Howmet Global Fastening Systems Inc).
Key specifications for HT4075V4-7-24: Fastener Length: 0.892 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN; Thread Length: 0.398 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM THREADS IN; Material Document and Classification: AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS-4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.