The Screw,machine, cataloged under National Stock Number 5305-01-254-5401, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-254-5401 |
| Primary Part Number | BACB30NT3K3 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.518 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | TITANIUM ALLOY UNS R56400 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | BMS10-85,CAGEC81205 NATIONAL SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| BACB30NT3K3 | Boeing Defence Australia Ltd (AUS) |
| BACB30NT3K3 | Howmet Global Fastening Systems Inc (USA) |
| BACB30NT3K3 | Hi-Shear Corporation (USA) |
| BACB30NT3K3 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30NT3K3 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30NT3K3 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30NT3K3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30NT3K3 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30NT3K3 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30NT3K3 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30NT3K3 | 5/9 Secondary reference U.S. Government activity |
| BACB30NT3K3 | 5/2 Secondary reference U.S. Government activity |
| BACB30NT3K3 | 5/2 Secondary reference U.S. Government activity |
| BACB30NT3K3 | 5/9 Secondary reference Sps Technologies Inc |
| BACB30NT3K3 | 5/9 Secondary reference U.S. Government activity |
| BACB30NT3K3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-254-5401 is a Screw,machine, manufactured by Boeing Defence Australia Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-254-5401 has 10 manufacturer part numbers on file: BACB30NT3K3 (Boeing Defence Australia Ltd), BACB30NT3K3 (Howmet Global Fastening Systems Inc), BACB30NT3K3 (Hi-Shear Corporation), BACB30NT3K3 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30NT3K3 (Boeing Defence Australia Ltd Div Defense, Space & Security) and 5 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-669-6720. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30NT3K3: Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Screw Surface Treatment: ALUMINUM; Fastener Length: 0.518 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE. 15 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.