The Screw,machine, cataloged under National Stock Number 5305-01-691-9835, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-691-9835 |
| Primary Part Number | CA2254-4-9 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.972 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS5731 OR 5737 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Locking Feature | SLOTTED |
| Screw Material | IRON ALLOY 660 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE III |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Screw Surface Treatment Document and Classification | AMS-QQ-P-35 ASSN STD 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 |
|---|---|
| CA2254-4-9 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| CA2254-4-9 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M1238-4-9 | 3/9 Design control — primary reference The Boeing Company Div Defense |
| CA2254 | D/9 Drawing number reference only Howmet Global Fastening Systems Inc. Div Tridair Products |
NSN 5305-01-691-9835 is a Screw,machine, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-691-9835 has 2 manufacturer part numbers on file: CA2254-4-9 (Howmet Global Fastening Systems Inc. Div Tridair Products), CA2254-4-9 (The Boeing Company Div Defense).
Key specifications for CA2254-4-9: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.972 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS5731 OR 5737 ASSN STD SINGLE MATERIAL RESPONSE. 17 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.