The Screw,machine, cataloged under National Stock Number 5305-00-844-9159, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-844-9159 |
| Primary Part Number | 331C201B1032C20 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Head Height | 0.105 INCHES NOMINAL IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 1.250 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER ALLOY |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.365 INCHES NOMINAL 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 |
|---|---|
| 331C201B1032C20 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| 331C201B1032C20 | Westinghouse Electric Corp (USA) |
| 1A20806H53 | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 1A20806H53 | 5/9 Secondary reference U.S. Government activity |
| 331C201B1032C20 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5305-00-844-9159 is a Screw,machine, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-844-9159 has 3 manufacturer part numbers on file: 331C201B1032C20 (Northrop Grumman Support Services Corp), 331C201B1032C20 (Westinghouse Electric Corp), 1A20806H53 (Northrop Grumman Support Services Corp).
Key specifications for 331C201B1032C20: Head Height: 0.105 INCHES NOMINAL IN; Screw Surface Treatment: CADMIUM; Fastener Length: 1.250 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE. 14 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.