The Screw,close Tolerance, cataloged under National Stock Number 5305-00-308-1806, 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 16 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-308-1806 |
| Primary Part Number | ST3M466V7L9-1 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM IN |
| Thread Length | 0.631 INCHES MINIMUM AND 0.681 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 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 | 20 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.662 INCHES MINIMUM AND 0.668 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 |
|---|---|
| ST3M466V7L9-1 PRIMARY | Hi-Shear Corporation (USA) |
| WC4028L7-9 | West Coast Aerospace, Inc. (USA) |
| HT4028L7-9 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M466V7L9-1 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M466V7L9-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M466V7L9-1 | Saturn Fasteners Inc (USA) |
| ST3M466V7L9-1 | Camcar Llc Div Camcar Llc (USA) |
| ST3M466V7L9-1 | Houston Precision Fasteners I Lp (USA) |
| ST3M466V7L9-1 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M466V7L9-1 PRIMARY | Huck International, Inc (USA) |
| 11909V7L9-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M466V7L9-1 | Heartland Precision Fasteners Inc (USA) |
| HT4028L7-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4028L7-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M466V7L9-1 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| HT4028L7-9 | 5/9 Secondary reference Huck International, Inc |
| HT4028L7-9 | 5/9 Secondary reference U.S. Government activity |
| ST3M466V7L9-1 | 3/2 Design control — primary reference U.S. Government activity |
| HT4028L7-9 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4028L7-9 | 5/9 Secondary reference U.S. Government activity |
| HT4028L7-9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HT4028L7-9 | 5/9 Secondary reference U.S. Government activity |
| HT4028L7-9 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M466V7L9-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-00-308-1806 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-308-1806 has 15 manufacturer part numbers on file: ST3M466V7L9-1 (Hi-Shear Corporation), WC4028L7-9 (West Coast Aerospace, Inc.), HT4028L7-9 (Sps Technologies Ltd, Tj Brooks Division), ST3M466V7L9-1 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M466V7L9-1 (Howmet Global Fastening Systems Inc) and 10 more.
Key specifications for ST3M466V7L9-1: Fastener Length: 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM IN; Thread Length: 0.631 INCHES MINIMUM AND 0.681 INCHES MAXIMUM IN; Material Document and Classification: AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.438 INCHES IN. 16 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.