The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-389-2671, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-389-2671 |
| Primary Part Number | 845-2180927 PC 7Q3 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZW |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Departure From Cited Document | ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION |
| Nondefinitive Spec/std Data | 4 TYPE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 845-2180927 PC 7Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-2050875 PC7Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| SS845-2050875 PC 7Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2180927 PC 7Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2050875 PC 7Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2180927 PC 7 | 5/1 Secondary reference U.S. Government activity |
| SS845-2050875 PC7 | 3/1 Design control — primary reference U.S. Government activity |
| MIL-B-24059 | 4/1 Identification reference U.S. Government activity |
| MIL-B-24059Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 845-2050875 PC 7 | 5/1 Secondary reference U.S. Government activity |
| FF-S-86 | 5/1 Secondary reference U.S. Government activity |
| FF-S-86Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2050875 PC 7 | 5/1 Secondary reference U.S. Government activity |
| 845-2180927 PC 7 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-01-389-2671 is a Screw,cap,socket Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-389-2671 has 5 manufacturer part numbers on file: 845-2180927 PC 7Q3 (Naval Inventory Control Point Mechanicsburg), 845-2050875 PC7Q3 (Naval Inventory Control Point Mechanicsburg), SS845-2050875 PC 7Q3 (Naval Inventory Control Point Mechanicsburg), 2180927 PC 7Q3 (Naval Inventory Control Point Mechanicsburg), 2050875 PC 7Q3 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-393-7510, 5975-01-516-1556. Verify interchangeability with system specifications before substitution.
Key specifications for 845-2180927 PC 7Q3: Fastener Length: 0.750 INCHES NOMINAL IN; Criticality Code Justification: ZZZW; Nominal Thread Diameter: 0.250 INCHES IN; Departure From Cited Document: ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION. 9 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.