The Screw,close Tolerance, cataloged under National Stock Number 5305-00-040-9516, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-040-9516 |
| Primary Part Number | BM19021-3-7 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 0.754 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN |
| Thread Length | 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Material Document and Classification | 23-112,76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-19021 MANUFACTURERS STANDARD |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 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 | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.266 INCHES MINIMUM AND 0.303 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 |
|---|---|
| BM19021-3-7 PRIMARY | Huck International, Inc (USA) |
| HT291-3-7 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT291-3-7 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 109454-3-7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT8141-3-7 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT291-3-7 PRIMARY | Hi-Shear Corporation (USA) |
| HT291-3-7 | Satair A/s (DNK) |
| 11907-3-7 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M455-3-7 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT8141-3-7 | 3/2 Design control — primary reference U.S. Government activity |
| 109454-3-7 | 5/9 Secondary reference Sps Technologies Inc |
| BM19021-3-7 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-040-9516 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-040-9516 has 8 manufacturer part numbers on file: BM19021-3-7 (Huck International, Inc), HT291-3-7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT291-3-7 (Fairchild Fasteners Europe - Vsd Gmbh), 109454-3-7 (Sps Technologies, Llc Dba PB Fasteners), HT8141-3-7 (Fairchild Fasteners Europe - Vsd Gmbh) and 3 more.
Key specifications for BM19021-3-7: Fastener Length: 0.754 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN; Thread Length: 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN; Material Document and Classification: 23-112,76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.190 INCHES IN. 17 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.