The Screw,close Tolerance, cataloged under National Stock Number 5305-01-668-1646, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div City of Industry Operations. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Howmet Global Fastening Systems Inc Div City of Industry Operations (CAGE 1RC86); Federal Manufacturing Corp (CAGE 17943); Valley-Todeco, Inc. Dba Arconic Fastening Systems (CAGE 06710); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-668-1646 |
| Primary Part Number | BACB30LK3K5 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| 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 |
|---|---|
| BACB30LK3K5 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LK3K5 PRIMARY | Federal Manufacturing Corp (USA) |
| BACB30LK3K5 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LK3K5 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LK3K5 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LK3K5 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BACB30LK3K5 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5305-01-668-1646 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-668-1646 has 6 manufacturer part numbers on file: BACB30LK3K5 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30LK3K5 (Federal Manufacturing Corp), BACB30LK3K5 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LK3K5 (Sps Technologies, Llc Dba PB Fasteners), BACB30LK3K5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 1 more.
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.