The Thumbscrew, cataloged under National Stock Number 5305-01-418-3423, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Horizon Aerospace Llc Dba Magnetics Division. 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. 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 | 5305-01-418-3423 |
| Primary Part Number | 152-55 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Horizon Aerospace Llc Dba Magnetics Division |
| Status | ACTIVE |
| Point Diameter | 0.100 INCHES NOMINAL IN |
| Head Height | 0.184 INCHES NOMINAL IN |
| Point Length | 0.031 INCHES NOMINAL IN |
| Fastener Length | 1.166 INCHES NOMINAL IN |
| Shoulder Length | 0.400 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Length | 0.485 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.250 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.140 INCHES NOMINAL SECOND SHOULDER IN |
| Thread Length | 0.187 INCHES MINIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | AMS 5636 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5640 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 45.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.125 INCHES IN |
| Head Style | KNURLED NO. 5 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 44 |
| Material | STEEL COMP 302 OR STEEL COMP 303SE OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.187 INCHES NOMINAL 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 |
|---|---|
| 152-55 PRIMARY | Horizon Aerospace Llc Dba Magnetics Division (USA) |
NSN 5305-01-418-3423 is a Thumbscrew, manufactured by Horizon Aerospace Llc Dba Magnetics Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-418-3423 has 1 manufacturer part number on file: 152-55 (Horizon Aerospace Llc Dba Magnetics Division).
2 possible matches (shared part number, not a government interchangeability claim): 6515-01-580-9370, 6850-01-669-1496. Verify interchangeability with system specifications before substitution.
Key specifications for 152-55: Point Diameter: 0.100 INCHES NOMINAL IN; Head Height: 0.184 INCHES NOMINAL IN; Point Length: 0.031 INCHES NOMINAL IN; Fastener Length: 1.166 INCHES NOMINAL 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.