The Setscrew, cataloged under National Stock Number 5305-01-266-0574, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fluid Handling Llc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-266-0574 |
| Primary Part Number | 217020601611 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-591,ALLOY 655 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | SQUARE COUNTERSUNK |
| Point Style | OVAL |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Internal Drive Style | FOUR SPLINE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | COPPER ALLOY 655 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 |
|---|---|
| 217020601611 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 217020601611 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 5305-01-266-0574 is a Setscrew, manufactured by Fluid Handling Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-266-0574 has 1 manufacturer part number on file: 217020601611 (Fluid Handling Llc).
Key specifications for 217020601611: Fastener Length: 1.500 INCHES NOMINAL IN; Material Document and Classification: QQ-C-591,ALLOY 655 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.375 INCHES IN; Head Style: SQUARE COUNTERSUNK. 12 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.