The Screw Close Toleran, cataloged under National Stock Number 5305-01-478-0773, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-478-0773 |
| Primary Part Number | ST3M652C6-10A |
| Item Name | Screw Close Toleran |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| 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 |
|---|---|
| 11925C6-10A | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M652C6-10A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M652C6-10A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M652C6-10A | Houston Precision Fasteners I Lp (USA) |
| HT4020-6-10A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4020-6-10A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M652C6-10A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4020-6-10A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4020-6-10A PRIMARY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4020-6-10A PRIMARY | Hi-Shear Corporation (USA) |
| HT4020-6-10A PRIMARY | Huck International, Inc (USA) |
| HT4020-6-10A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M652C6-10A PRIMARY | The Boeing Company Div Defense (USA) |
| WC4020-6-10A | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HT4020-6-10A | 3/2 Design control — primary reference U.S. Government activity |
| HT4020-6-10A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-478-0773 is a Screw Close Toleran, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-478-0773 has 14 manufacturer part numbers on file: 11925C6-10A (Reid Products Inc. Dba Reid Products Inc), ST3M652C6-10A (Heartland Precision Fasteners Inc), ST3M652C6-10A (Fastener Innovation Technology, Inc. Dba F I T), ST3M652C6-10A (Houston Precision Fasteners I Lp), HT4020-6-10A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 9 more.
Key specifications for ST3M652C6-10A: Criticality Code Justification: AGAV; End Item Identification: USED ON F/A 18 E-F AIRCRAFT STRUCTURAL SECTION. 1 specification is 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.