The Screw,machine, cataloged under National Stock Number 5305-01-571-6149, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Click Bond Inc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-571-6149 |
| Primary Part Number | CB9351-4-11C |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Click Bond Inc |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.185 INCHES NOMINAL IN |
| Thread Length | 0.498 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | COBALT COMP MP-35-N |
| Internal Drive Style | TORX |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.449 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| 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 |
|---|---|
| CB9351-4-11C PRIMARY | Click Bond Inc (USA) |
| 03A520-4-11C | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
NSN 5305-01-571-6149 is a Screw,machine, manufactured by Click Bond Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-571-6149 has 2 manufacturer part numbers on file: CB9351-4-11C (Click Bond Inc), 03A520-4-11C (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for CB9351-4-11C: Screw Surface Treatment: PASSIVATE; Fastener Length: 1.185 INCHES NOMINAL IN; Thread Length: 0.498 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 13 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.