The Setscrew, cataloged under National Stock Number 5305-00-272-6191, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-272-6191 |
| Primary Part Number | R186PC26 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | CANCELLED |
| Material Document and Classification | QQ-N-281 CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Length | 0.375 INCHES MAXIMUM IN |
| Internal Drive Style | HEXAGON |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Departure From Cited Designator | AS MODIFIED BY MATERIAL |
| Material | NICKEL ALLOY R-405 OVERALL |
| Thread Quantity Per Inch | 18 |
| Head Style | HEADLESS (SETSCREW) |
| Nondefinitive Spec/std Data | 1 TYPE AND 2 STYLE |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3128786PC26 | Naval Ship Systems Command (USA) |
| 563-4105-938325PCSP18 | Naval Ship Systems Command (USA) |
| 569-4700-1189569PCSP18 | Naval Ship Systems Command (USA) |
| R55PC26 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R249PC26 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R53PCSP18 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 563-4105-938325PC27 | Naval Ship Systems Command (USA) |
| 4700-3109539ITEM12 | Naval Ship Systems Command (USA) |
| R55ITEM12 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| MILS933TYPEG | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| R205PCSP18 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R186PC26 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 4700-3163646PC27 | Naval Ship Systems Command (USA) |
| 4700-3109539PC26 | Naval Ship Systems Command (USA) |
| R53PC27 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R204PC27 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R213PC26 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 5305-00-272-6191 is a Setscrew, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-272-6191 has 17 cross-referenced part numbers: 3128786PC26 (Naval Ship Systems Command), 563-4105-938325PCSP18 (Naval Ship Systems Command), 569-4700-1189569PCSP18 (Naval Ship Systems Command), R55PC26 (Circor Naval Solutions Llc Dba Warren Pumps), R249PC26 (Circor Naval Solutions Llc Dba Warren Pumps) and 12 more.
There are 7 known substitutes for 5305-00-272-6191: 5305-00-206-3454, 5305-00-254-7008, 5305-00-274-0078 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for R186PC26: Material Document and Classification: QQ-N-281 CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL; Thread Length: 0.375 INCHES MAXIMUM IN; Internal Drive Style: HEXAGON. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-272-6191 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.