The Screw,close Tolerance, cataloged under National Stock Number 5305-01-477-5616, 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 15 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-477-5616 |
| Primary Part Number | ST3M430V6-15AS |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN |
| Thread Length | 0.641 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.756 INCHES MINIMUM AND 0.760 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 | Y |
| Part Number | Manufacturer |
|---|---|
| HT8137-6-15AS | Howmet Global Fastening Systems Inc (USA) |
| WC8137-6-15A | West Coast Aerospace, Inc. (USA) |
| HT271A6-15 | Hi-Shear Corporation (USA) |
| HT271A6-15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BM33024V6-15U | Huck International, Inc (USA) |
| ST3M430V6-15AS PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M430V6-15AS | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 110179-6-15AS PRIMARY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| 110179-6-15AS | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-477-5616 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-477-5616 has 8 manufacturer part numbers on file: HT8137-6-15AS (Howmet Global Fastening Systems Inc), WC8137-6-15A (West Coast Aerospace, Inc.), HT271A6-15 (Hi-Shear Corporation), HT271A6-15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), BM33024V6-15U (Huck International, Inc) and 3 more.
Key specifications for ST3M430V6-15AS: Head Height: 0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN; Thread Length: 0.641 INCHES NOMINAL IN; Criticality Code Justification: AGAV; Material Document and Classification: NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 15 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.