The Screw,close Tolerance, cataloged under National Stock Number 5305-01-347-4022, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-347-4022 |
| Primary Part Number | ST3M430V4-10ASM |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.106 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN |
| Fastener Length | 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | O RING AND DRY FILM LUBRICANT AND CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 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 | 29 |
| Material | TITANIUM ALLOY UNS R56400 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.5018 INCHES MINIMUM AND 0.5066 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 |
|---|---|
| ST3M430V4-10ASM | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M430V4-10ASM PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M430V4-10ASM | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT271A4-10M | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT271A4-10M | Hi-Shear Corporation (USA) |
| ST3M430V4-10ASM | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| ST3M430V4-10ASM | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-347-4022 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-347-4022 has 6 manufacturer part numbers on file: ST3M430V4-10ASM (Fastener Innovation Technology, Inc. Dba F I T), ST3M430V4-10ASM (The Boeing Company Div Defense), ST3M430V4-10ASM (Sps Technologies, Llc Dba PB Fasteners), HT271A4-10M (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT271A4-10M (Hi-Shear Corporation) and 1 more.
Key specifications for ST3M430V4-10ASM: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.106 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN. 21 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.