The Setscrew, cataloged under National Stock Number 5305-00-357-1893, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-357-1893 |
| Primary Part Number | HP437113 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Point Diameter | 0.117 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Head Height | 0.161 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN |
| Point Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Fastener Length | 0.363 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.292 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Point Style | DOG |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 302 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.063 INCHES NOMINAL IN |
| Head Diameter | 0.389 INCHES MINIMUM AND 0.414 INCHES MAXIMUM 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 |
|---|---|
| HP437113 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP437113 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-357-1893 is a Setscrew, manufactured by Tactair Fluid Controls Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-357-1893 has 1 manufacturer part number on file: HP437113 (Tactair Fluid Controls Inc).
Key specifications for HP437113: Point Diameter: 0.117 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN; Head Height: 0.161 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN; Point Length: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Fastener Length: 0.363 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN. 22 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.