The Screw,close Tolerance, cataloged under National Stock Number 5305-01-723-3191, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-723-3191 |
| Primary Part Number | ST3M733-5L12 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| ST3M733-5L12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M733-5L12 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| ST3M733-5L12 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M733-5L12 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| WC4057-512 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M733-5L12 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M733-5L12 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11935-5L12 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M733-5L12 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M733-5L12 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M733-5L12 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M733-5L12 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M733-5L12 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M733-5L12 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M733 | D/9 Drawing number reference only U.S. Government activity |
NSN 5305-01-723-3191 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-723-3191 has 12 manufacturer part numbers on file: ST3M733-5L12 (Howmet Global Fastening Systems Inc), ST3M733-5L12 (Houston Precision Fasteners I Lp), ST3M733-5L12 (Hi-Shear Corporation), ST3M733-5L12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), WC4057-512 (West Coast Aerospace, Inc.) and 7 more.
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-725-0777, 5305-01-727-5710. Verify interchangeability with system specifications before substitution.
Key specifications for ST3M733-5L12: Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: BOLT - 100 DEGREES COUNTERSUNK; Thread Class: 3A A; End Item Identification: F-15EX. 3 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.