The Screw,close Tolerance, cataloged under National Stock Number 5305-01-207-9349, 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 19 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-207-9349 |
| Primary Part Number | BACB30NN3K5 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 0.642 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Thread Length | 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.345 INCHES MINIMUM AND 0.383 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 |
|---|---|
| BACB30NN3K5 PRIMARY | Huck International, Inc (USA) |
| BACB30NN3K5 | Boeing Defence Australia Ltd (AUS) |
| BACB30NN3K5 | Hi-Shear Corporation (USA) |
| BACB30NN3K5 | Howmet Global Fastening Systems Inc (USA) |
| BACB30NN3K5 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30NN3K5 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30NN3K5 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30NN3K5 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30NN3K5 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30NN3K5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30NN3K5 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30NN3K5 | 5/9 Secondary reference U.S. Government activity |
| BACB30NN3K5 | 5/9 Secondary reference U.S. Government activity |
| BACB30NN3K5 | 5/9 Secondary reference U.S. Government activity |
| 5305PL1991295 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| BACB30NN3K5 | 5/9 Secondary reference U.S. Government activity |
| BACB30NN3K5 | 5/9 Secondary reference Sps Technologies Inc |
| BACB30NN3K5 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-207-9349 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-207-9349 has 11 manufacturer part numbers on file: BACB30NN3K5 (Huck International, Inc), BACB30NN3K5 (Boeing Defence Australia Ltd), BACB30NN3K5 (Hi-Shear Corporation), BACB30NN3K5 (Howmet Global Fastening Systems Inc), BACB30NN3K5 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 6 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-669-6592. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30NN3K5: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 0.642 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN. 19 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.