The Setscrew, cataloged under National Stock Number 5305-00-262-9678, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-00-262-9678 |
| Primary Part Number | R272REVAPCN26323-9A |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Fastener Length | 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Nondefinitive Spec/std Data | 2 TYPE AND 3 STYLE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 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 | X |
| Part Number | Manufacturer |
|---|---|
| R272REVAPCN26323-9A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| R300AREVAPC1SETSCR PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 5901-1412357ITEM13 | 3/2 Design control — primary reference U.S. Government activity |
| MILS933TYPEE | 4/1 Identification reference U.S. Government activity |
| 575-5801-1444240REVAPC1SETSCR | 3/2 Design control — primary reference U.S. Government activity |
| 4700-3196203REVAPC30 | 3/2 Design control — primary reference U.S. Government activity |
| 4700-3166789PC31 | 3/2 Design control — primary reference U.S. Government activity |
| 5901-1412356ITEM13 | 3/2 Design control — primary reference U.S. Government activity |
| 571-5901-1303697REVAPCN26323-9A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-262-9678 is a Setscrew, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-262-9678 has 2 manufacturer part numbers on file: R272REVAPCN26323-9A (Circor Naval Solutions Llc Dba Warren Pumps), R300AREVAPC1SETSCR (Circor Naval Solutions Llc Dba Warren Pumps).
3 possible matches (shared part number, not a government interchangeability claim): 5305-00-274-0194, 5305-00-274-2012, 5305-00-473-1090. Verify interchangeability with system specifications before substitution.
Key specifications for R272REVAPCN26323-9A: Fastener Length: 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES MAXIMUM IN; Material Document and Classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL; Nominal Thread Diameter: 0.190 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.