The Screw,close Tolerance, cataloged under National Stock Number 5305-01-312-0701, 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 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-312-0701 |
| Primary Part Number | ST3M430V4-13ASM |
| 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 | 0.0713 INCHES MINIMUM AND 0.0733 INCHES MAXIMUM IN |
| Fastener Length | 1.265 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | DRY FILM LUBRICANT AND O RING AND CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 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 | 28 |
| Material | TITANIUM ALLOY UNS R56400 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.4750 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 |
|---|---|
| ST3M430V4-13ASM PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M430V4-13ASM | Huck International, Inc (USA) |
| 110179-4-13ASM | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M430V4-13ASM | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M430V4-13ASM | Houston Precision Fasteners I Lp (USA) |
| HT271A4-13M PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT271A4-13M PRIMARY | Hi-Shear Corporation (USA) |
| HT8137-4-13ASM | Howmet Global Fastening Systems Inc (USA) |
| ST3M430V4-13ASM | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 110179-4-13ASM | 5/2 Secondary reference U.S. Government activity |
| HT8137-4-13ASM | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-312-0701 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-312-0701 has 9 manufacturer part numbers on file: ST3M430V4-13ASM (The Boeing Company Div Defense), ST3M430V4-13ASM (Huck International, Inc), 110179-4-13ASM (Sps Technologies Ltd, Tj Brooks Division), ST3M430V4-13ASM (Fastener Innovation Technology, Inc. Dba F I T), ST3M430V4-13ASM (Houston Precision Fasteners I Lp) and 4 more.
Key specifications for ST3M430V4-13ASM: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.0713 INCHES MINIMUM AND 0.0733 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.