The Screw,close Tolerance, cataloged under National Stock Number 5305-00-173-0100, 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 Tridair Products. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-173-0100 |
| Primary Part Number | CA2630-0443 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Thread Length | 0.277 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Grip Length | 2.688 INCHES MINIMUM AND 2.704 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| 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 |
|---|---|
| CA2630-0443 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| AS108-04-43 | 3/2 Design control — primary reference U.S. Government activity |
| GB511AE4-43 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| VP1119-4-43 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-173-0100 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-173-0100 has 1 manufacturer part number on file: CA2630-0443 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA2630-0443: Thread Length: 0.277 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL; Material Document and Classification: MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Grip Length: 2.688 INCHES MINIMUM AND 2.704 INCHES MAXIMUM IN. 5 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.