The Screw,machine, cataloged under National Stock Number 5305-01-174-3528, 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 15 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-174-3528 |
| Primary Part Number | BACS12CK3U12 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.658 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | IRON ALLOY 660 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A 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 | QQ-P-35 FED 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 |
|---|---|
| BACS12CK3U12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACS12CK3U12 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACS12CK3U12 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACS12CK3U12 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACS12CK3U12 PRIMARY | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACS12CK3U12 | 3/2 Design control — primary reference U.S. Government activity |
| BACS12CK3U12 | 3/2 Design control — primary reference U.S. Government activity |
| BACS12CK3U12 | 5/9 Secondary reference Champion Aviation Inc Devilbiss Co Medical Product Div |
| BACS12CK3U12 | 3/2 Design control — primary reference U.S. Government activity |
| BACS12CK3U12 | 5/9 Secondary reference U.S. Government activity |
| BACS12CK3U12 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BACS12CK3U12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-174-3528 is a Screw,machine, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-174-3528 has 5 manufacturer part numbers on file: BACS12CK3U12 (Howmet Global Fastening Systems Inc), BACS12CK3U12 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACS12CK3U12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACS12CK3U12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACS12CK3U12 (Federal Manufacturing Corp).
Key specifications for BACS12CK3U12: Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS5737 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.